KR102226745B1 - scanning purpose wax-bite and motion scanning method using thereof applying to manufacturing dental restoration - Google Patents

Abstract

In order to improve precision and reliability, the present invention is arranged between the implantation target part and the antagonist target part so that a plurality of images acquired for designing a dental restoration are aligned and matched in consideration of the vertical height of the person to be treated, and a preset standard dental arch In the scanning wax bite formed in correspondence with the profile, but formed of a paraffin wax material, it has a margin that exceeds the width of the standard gum portion corresponding to the implantation target portion, but is softened when heated to a predetermined temperature or higher. A variable fitting portion that is pressurized and corrected to fit with the outer profile of the implantation target portion; And a mastication protrusion formed integrally with the variable fitting part and protruding so as to correspond to the mating target part, and softening when heated to a predetermined temperature or higher and corrected to occlude the mating target part. Provide bytes.

Description

Scanning purpose wax-bite and motion scanning method using thereof applying to manufacturing dental restoration using the same

The present invention relates to a wax bite for scanning and a motion scan method for manufacturing a dental restoration using the same, and more particularly, to a wax bite for scanning with improved precision and reliability, and a motion scan method for manufacturing a tooth restoration using the same. .

In general, a dental restoration refers to an artificial periodontal tissue in the oral cavity that artificially restores appearance and function by replacing a missing tooth.

In detail, when the natural teeth are left in a lost state, distortion of the dentition occurs in the adjacent teeth and the opposing teeth of the missing teeth, resulting in deformation of the facial shape, deterioration of the mastication function, and increased discomfort in daily life. Moreover, when the loss of natural teeth persists for a long time, the alveolar bone surrounding the lost teeth is absorbed into the body, making it difficult to install artificial periodontal tissue.

At this time, the dental restoration is installed in the oral cavity to restore the mastication function, and to prevent deformation or damage of the antagonist tooth or the remaining tooth at the target arch side where the tooth restoration is required. Here, the dental restoration may be provided as an artificial crown individually matched to the lost tooth, and may be provided in a form that replaces a plurality of or all missing teeth on the target arch side. These dental restorations are made of titanium or the like that has no rejection reaction to the human body to replace the lost roots, and are fixed to the oral cavity through an implant (fixture) that is placed in the alveolar bone.

Therefore, the dental restoration can be used stably because there is no secondary caries incidence factor. In addition, since it has substantially the same structure as a natural tooth, there is no pain and foreign body sensation in the gum, and there is an advantage that it can be used semi-permanently with good care.

On the other hand, in order to design the dental restoration suitably for each individual to be treated and install it in an accurate position, accurate and precise oral information is required. To this end, internal tissue information such as surface information of the oral cavity and alveolar bone shape/bone density are required together. Accordingly, an image registration process of acquiring a 3D external shape image and a 3D image corresponding to the maxillary and mandible of the person to be treated and aligning and matching the 3D image corresponding to the vertical height is required.

In detail, the 3D external shape image is obtained by collecting information scanned using an oral scanner along the oral cavity of the patient to be treated. At this time, the 3D external shape image is distorted to appear different from the actual oral cavity in the process of collecting the scanned information. Therefore, it is required to correct the distorted dental curvature in the 3D external shape image based on the 3D image acquired through CT imaging.

In addition, in order to prepare an implant suitable for the target arch of the person to be treated and to set the height of the tooth restoration, the 3D image is preferably obtained through CT scans in a state in which the upper and lower jaws are occluded with respect to the vertical height of the person to be treated. .

However, when at least one of the upper and lower jaws is a partial edentulous jaw or a complete edentulous jaw in which most of the teeth have been lost, there is a problem that the upper and lower jaws are difficult to be separated from each other in response to a vertical height suitable for the operator. Therefore, in order to align and match the 3D external shape image and the 3D image corresponding to the vertical height, a process of accurately calculating a vertical height is required.

In detail, conventional methods of calculating the vertical height of the person to be treated include a method of calculating the vertical height using an articulator after taking an impression, a method of using a tracer, a method of using a splint that is custom-made according to the person to be treated, and the like.

First, the method of using the articulator after taking the impression is to fill the impression material in the tray and then take the impression of the oral cavity, and then calculate the vertical height while adjusting the spacing of the gypsum model produced through the articulator using the articulator. This method has a problem in that the process is complicated, such as taking an impression and producing a plaster model, and since the vertical height is not calculated directly from the oral cavity of the person to be treated, its precision is degraded.

And, the method of using the tracer is to install the stunt needle and the stunt board on the upper and lower jaws, respectively, and calculate the vertical height while adjusting the spacing in consideration of the intermaxillary relationship. In this method, while performing the process of adjusting the height of the stunt needle to correspond to the vertical height, there was a discomfort in that the operator had to repeatedly open and close the oral cavity.

In addition, a separate gypsum model must be produced in order to accurately install the grave board on the upper and lower jaws. That is, after manufacturing the gypsum model, the positions of the staging board and the staging needle are aligned and arranged using resin, putty, or wax. In addition, there is a problem in that it takes an excessive amount of time to measure the vertical height, such as installing a resin, putty, or a seedling plate attached to the wax in the oral cavity.

In addition, in the method of using a custom-made splint, an image of an oral or impression model of a person to be treated is acquired, and the splint is individually designed and manufactured based on this. Next, after laminating/filling a wax rim and a resin on the inner and outer surfaces of the prepared splint, it is installed in the oral cavity to calculate the vertical height. This method has a problem in that the number of visits by the person to be treated increases, such as a step for manufacturing a splint and a step for acquiring an image using the manufactured splint.

In addition, since the probability of occurrence of an error in the process of transferring the impression model or the acquired image to the manufacturer side increases, there is a problem in that the reliability of the individually manufactured splints decreases. Moreover, there is a problem in that the overall cost and period required for tooth restoration are increased due to custom-made splints for each patient to be treated.

On the other hand, when manufacturing the dental restoration, a gothic arch tracer has been researched and developed in order to manufacture an artificial crown having an occlusal surface substantially mated to the jaw joint of the operator by determining the horizontal dislocation corresponding to the occlusal state of the person to be treated.

In detail, in the related art, a grave board from which a gothic arch is obtained and a stunt needle for recording a gothic arch on the board are installed outside or inside the oral cavity of the person to be treated, thereby obtaining a gothic arch for the movement of the jaw joint of the person to be treated.

However, in order to obtain the gothic arch of the person to be treated, there is a problem that excessive time is required to obtain the gothic arch by adding a step of installing and installing a gothic arch tracer corresponding to the mouth of the person to be treated.

Korean Patent Registration No. 10-0977911

In order to solve the above problems, the present invention has as a solution to provide a scanning wax bite with improved precision and reliability, and a motion scan method for manufacturing a dental restoration using the same.

In order to solve the above problems, the present invention is arranged between the implantation target part and the antagonist target part so that a plurality of images acquired for the design of a dental restoration are aligned and matched in consideration of the vertical height of the person to be treated, and a preset standard tooth sequence In the scan wax bite formed corresponding to the arch profile, having a margin that exceeds the width of the implantable portion, but softened when heated to a predetermined temperature or higher, and press-corrected to match the outer profile of the implantable portion, A variable fitting part formed of a paraffin wax material; And a mastication protrusion formed integrally with the variable fitting part and protruding to correspond to the mating target part, and softening when heated to a predetermined temperature or higher and corrected so as to engage with the mating target part, wherein the mastication protrusion is preset Doedoe protruding in a cross-sectional area corresponding to the standard dental arch profile, the occlusal surface of the mastication protrusion includes at least one of scratches and intaglios to improve adhesion with the curable resin filled during relining so as to correspond to the vertical height of the person to be treated. It provides a wax bite for scanning, characterized in that the friction mark portion is formed.

On the other hand, the present invention is a paraffin wax material containing 77 to 85% by weight of ceresin, 7 to 13% by weight of beeswax, 1.5 to 3% by weight of canaoba, 2 to 4% by weight of resin, and 1.5 to 3% by weight of microcrystalline wax. A variable fitting part that is formed, but is press-corrected to match the outer profile of the implantable part, a mastication protrusion formed integrally with the variable fitting part and protruding to correspond to the mating target part, and a gothic arch for the three-dimensional motion trajectory of the jaw joint of the patient to be placed A first step of preparing a wax bite including a motion recognition enhancer disposed on a surface to provide a visible reference indicator when a motion image is acquired; The inner and outer surfaces of the wax bite are heated to 40 to 55°C to soften, and the wax bite is disposed between the implantation target part and the mating target part, so that the mastication protrusion and the mating target part are mutually occluded. step; The third step of obtaining a gothic arch motion image for the three-dimensional motion trajectory of the jaw joint by recognizing the motion of the jaw joint in the left and right directions, the anteroposterior direction, and the vertical direction by the motion recognition enhancement unit through the dynamic scanner. ; And a fourth step in which the motion image is converted into 3D data and displayed on a virtual writing surface included in the design information of the tooth restoration.

Through the above solution means, the present invention provides the following effects.

First, since the motion image of the vertical height and the three-dimensional motion trajectory of the jaw joint is accurately and quickly acquired through the wax bite for scanning, the manufacturing precision of the mastication surface of the tooth restoration that is finally manufactured based on this is remarkably improved and the final manufacturing After the tooth restoration is required, the additional correction work required is minimized, so that the convenience of the procedure can be remarkably improved.

Second, when the motion image of the three-dimensional motion trajectory of the jaw joint is obtained in a state where the scanning wax bite is heated above a preset temperature and softened, it is lubricated and fluidly flows between the occlusal surface of the antagonist target and the masticatory projection. The accuracy of motion images acquired through the dynamic scanner can be remarkably improved.

Third, since a motion recognition enhancement part for enhancing motion recognition is provided on the smooth surface of the scanning wax bite formed integrally with a paraffin wax material, the recognition of the three-dimensional motion trajectory can be remarkably enhanced during motion scanning through a dynamic scanner.

Fourth, the motion recognition reduction surface of the scanning wax bite is reinforced by the motion recognition enhancement unit, so that the motion image of the 3D motion trajectory of the jaw joint corresponding to the Gothic arch shape is accurately acquired as 3D 3D data. The precision of the dental restoration being obtained can be significantly improved.

1A and 1B are a front view and a plan view in which a part of a wax bite for scanning is projected according to an embodiment of the present invention.
2 is an exemplary view showing a first modified example of a wax bite for scanning according to an embodiment of the present invention.
3A and 3B are exemplary views showing a second modified example of a wax bite for scanning according to an embodiment of the present invention.
Figure 4 is a front view showing a third modified example of the wax bite for scanning according to an embodiment of the present invention.
Figure 5 is a front view showing a fourth modified example of the wax bite for scanning according to an embodiment of the present invention.
6 is a front view showing a fifth modified example of the wax bite for scanning according to an embodiment of the present invention.
7 is an exemplary view showing a process of acquiring a motion image in a motion scan method for manufacturing a dental restoration using a wax bite according to an embodiment of the present invention.
8 is an exemplary view showing a state in which a 3D planning image and a motion image are superimposed in a motion scan method for manufacturing a dental restoration using a wax bite according to an embodiment of the present invention.
9 is an exemplary view showing a state in which a 3D planning image and a motion image are erased in a motion scan method for manufacturing a dental restoration using a wax bite according to an embodiment of the present invention.
10 is a flow chart showing a motion scan method for manufacturing a dental restoration using a wax bite according to an embodiment of the present invention.

Hereinafter, a wax bite for scanning according to a preferred embodiment of the present invention and a motion scanning method for manufacturing a dental restoration using the same will be described in detail with reference to the accompanying drawings.

In this case, the present invention can be applied to a partial edentulous or edentulous jaw in which it is difficult to calculate an occlusal vertical dimention (VD) due to a large amount of loss of natural teeth on at least one side of the maxilla and mandible.

In addition, in the present invention, it is preferable to understand that the implantation target part means a dental jaw in which a scanning wax bite and a tooth restoration are substantially installed, and the antagonist target part means a tooth that is occluded with the implantation target part. Hereinafter, the implantation target portion encompasses an impression model prepared corresponding to the mandible or mandible of the oral cavity, and the antagonist target portion encompasses an impression model prepared corresponding to the maxilla or maxilla of the oral cavity, and is described and illustrated. Of course, the present invention may encompass an impression model in which the implantation target portion is prepared corresponding to the maxillary or upper jaw, and an impression model in which the opposing target portion is prepared corresponding to the mandible or mandible may be included.

In addition, in the present invention, the term “tooth restoration” encompasses a partial/complete prosthesis and a partial/complete denture in which an artificial crown and a plurality of artificial crowns are integrally provided as one set to individually correspond to a defective tooth. It is desirable to understand. These dental restorations can be fixed to the oral cavity through dental implants such as fixtures and abutments. Here, the fixture and the abutment may be prepared as one of ready-made products or may be individually manufactured, and the fixture and the abutment may be provided to have one body. In addition, the dental restoration is preferably designed according to the person to be treated in consideration of occlusion with the opposing teeth, but may be standardized in some cases and designed and manufactured based on standard dental data previously stored in the planning unit.

In addition, in the present invention, the operator to be treated refers to a patient who needs tooth restoration, and the operator and the operator refer to dentists and medical personnel to whom dental restorations are installed. In addition, the manufacturer's side and the manufacturer refer to dental laboratories and dental technicians that manufacture/supply dental restorations and tools for installing them.

1A and 1B are a front view and a plan view in which a part of a scanning wax bite according to an embodiment of the present invention is projected, and FIG. 2 is a first modified example of a scanning wax bite according to an embodiment of the present invention. It is an exemplary diagram shown. 3A and 3B are exemplary views showing a second modified example of a scanning wax bite according to an embodiment of the present invention, and FIG. 4 is a third modified example of a scanning wax bite according to an embodiment of the present invention. It is a front view showing an example. 5 is a front view showing a fourth modified example of a scanning wax bite according to an embodiment of the present invention, and FIG. 6 is a front view showing a fifth modified example of a scanning wax bite according to an embodiment of the present invention. to be. And, FIG. 7 is an exemplary view showing a process of obtaining a motion image in a motion scan method for manufacturing a dental restoration using a wax bite according to an embodiment of the present invention. In addition, FIG. 8 is an exemplary view showing a state in which a 3D planning image and a motion image are superimposed in a motion scan method for manufacturing a dental restoration using a wax bite according to an embodiment of the present invention. And, FIG. 9 is an exemplary view showing a state in which a 3D planning image and a motion image are erased in a motion scan method for manufacturing a dental restoration using a wax bite according to an embodiment of the present invention. And, Figure 10 is a flow chart showing a motion scan method for manufacturing a dental restoration using a wax bite according to an embodiment of the present invention.

As shown in Figures 1 to 10, the scanning wax bite (310, 310A, 310B) according to a preferred embodiment of the present invention is provided including variable fittings (311, 313, 315) and writing protrusions (312, 314, 316). In addition, the motion scan method for manufacturing a dental restoration using a wax bite according to a preferred embodiment of the present invention includes a preparation of a wax bite (s410), a warming treatment of the wax bite to soften and the mastication protrusion and the opposing target part are mutually occluding (s420), It includes a series of steps such as obtaining a motion image (s430), and superimposing the motion image on a virtual authoring surface included in the design information of the tooth restoration (s440).

Here, the scanning wax bite 310, 310A, 310B is the implantation target part 2 and the mating target part so that each image data acquired for designing the dental restoration is aligned and matched in consideration of the vertical height of the person to be treated. (3) It is a tool placed in between.

At this time, the scanning wax bite 310, 310A, 310B is provided as a ready-made product, but is preferably formed of a material that can be corrected corresponding to the vertical height suitable for the individual to be treated. Accordingly, in the process of acquiring each image data required when designing the dental restoration, the correct vertical height can be guided through the scanning wax bits 310, 310A, 310B corrected according to the person to be treated. Here, each image data is preferably understood as a concept encompassing a plurality of scanning images and CT images.

And, the present invention can be carried out using a manufacturing system including an imaging device, a planning unit, and a manufacturing device. In addition, it is preferable to understand that the imaging device encompasses an oral scanner, a computed tomograph, and a dynamic scanner. In detail, a plurality of the scanning images, which are three-dimensional surface information on the outer surfaces of the implantation target part 2, the mating target part 3, and the scanning wax bite 310, 310A, 310B, using the oral scanner Is obtained. In addition, the CT image, which is internal tissue information about the shape and density of alveolar bones of the maxilla and mandible, is obtained using the computed tomography machine.

In addition, a gothic arch motion image c30 of a three-dimensional motion trajectory for movement of the jaw joint in the left and right directions, an anteroposterior direction, and an up-down direction of the person to be treated is obtained using the dynamic scanner. At this time, the motion image c30 is obtained in a state in which the outer surface of the implantation target portion 2 is exposed, and the mastication protrusions 312, 314, and 316 and the mating target portion 3 are occluded with each other.

In addition, the planning unit is preferably understood as a design device for designing the dental restoration based on each image data acquired using the imaging device and pre-stored design information. Moreover, through the planning unit, a plan for placing tooth implants such as a fixture and abutment for fixing the dental restoration to the oral cavity may be established. In addition, it is possible to virtually simulate the placement of tooth implants and tooth restoration through the tooth restoration based on the established implantation plan. Further, the dental restoration may be designed through the planning unit, but the motion image may be superimposed on the 3D planning image to display and erase the overlapping occlusal area on the virtual writing surface.

In addition, the manufacturing apparatus is preferably understood as a 3D printer or a milling machine that is manufactured into a real object by 3D printing or milling to correspond to the design information of the tooth restoration and the surgical guide generated through the planning unit. Of course, the manufacturing apparatus may further include a mold apparatus prepared in response to the designed information.

On the other hand, the scanning wax bites 310, 310A, and 310B disposed between the implantation target part 2 and the mating target part 3 are prepared. Here, the scanning wax bite (310, 310A, 310B) is formed by being standardized corresponding to a preset standard dental arch profile (da), and it is preferable that the variable fitting parts 311, 313, 315 and the mastication protrusions 312, 314, 316 are integrally formed.

In detail, the scanning wax bites 310, 310A, 310B have outer surface portions 312a, 314a, 316a protruding from one side to be occluded between the implantation target part 2 and the mating target part 3, but the inner surface part ( 311b, 313b, 315b) are depressed to a predetermined depth, and are formed in an arcuate shape as a whole. It is preferable that this arch shape corresponds to the standard dental arch profile (da). Here, the standard dental arch profile (da) is preferably understood as an area surface having a predetermined area corresponding to the gap between the outer and inner sides of the gingival bone surrounding the alveolar bone, which is the part where the teeth are actually arranged in the implantation target part. . In this case, the outer side of the gum part is a part corresponding to the labial and buccal side, and the inner side of the gum part is preferably understood as a part corresponding to the lingual side.

It is preferable that the standard dental arch profile (da) is standardized and calculated in consideration of anatomical deviations by age and gender. In detail, it is preferable that the standard dental arch profile (da) is divided and calculated in stages in response to an average value representing the size of the arch by age and gender. Through this, the scanning wax bites 310, 310A, and 310B may be divided to have a preset size and prepared for a general purpose. For example, the scanning wax bites 310, 310A, and 310B may be divided into six of the maxillary large/medium/small and the mandibular large/medium/small, and may be set and provided as a ready-made product that is universally standardized.

That is, in the present invention, since the vertical diameter is guided using the scan wax bite (310, 310A, 310B) mass-produced as a ready-made product, the period required to calculate the vertical diameter when designing the dental restoration is shortened, and the overall cost is reduced. It is economical. Through this, it is possible to solve the conventional problem that excessive time and cost are required to calculate the vertical height due to the use of a tracer or a custom-made splint.

In detail, in the case of the tracer, a separate impression model is required in order to be accurately installed in the oral cavity, and since the practitioner or manufacturer is the practitioner or the manufacturer who substantially controls the stunt needle, a difference from the vertical height determined by the practitioner may occur. In addition, in the case of an individually custom-made splint, inaccurate information may be reflected due to an error in a process in which information for designing it is repeatedly transmitted/delivered between the operator and the manufacturer. On the other hand, in the present invention, since the performer who determines the mastication sensitivity and corrects the thickness and shape of the scanning wax bite 310, 310A, 310B based on this, is the person to be treated substantially. Can be reflected. Therefore, the precision and accuracy of the tooth restoration designed and manufactured based on the accurately calculated vertical height can be remarkably improved.

Further, the scanning wax bites 310, 310A, 310B are prepared as ready-made products, but it is preferable that they are standardized and mass-produced in a plurality of sizes so that they can be universally applied to the oral cavity of various subjects or impression models corresponding thereto. Accordingly, the operator's side can use the scanning wax bites 310, 310A, and 310B in advance for each size, and can be used immediately at the visit of the operator, thereby remarkably improving the convenience of use. In addition, in the step of acquiring information on the implantation target part and the mating target part before installing the dental restoration, the number of visits by the person to be treated may be substantially minimized once.

In addition, as soon as the scanning wax bites 310, 310A, and 310B are corrected to be suitable for each person to be treated, a plurality of the scanning images, the CT images, and the motion images may be obtained. At this time, since the plurality of scanning images, the CT image, and the time point at which the motion image is acquired are substantially the same, the degree of matching of each image data may be remarkably improved.

On the other hand, the variable fitting parts 311, 313, 315 are provided on the inner surface side of the scanning wax bite 310, 310A, 310B, and the margins 311a, 313a, 315a exceeding the width of the standard gum part corresponding to the implantation target part It is preferably formed to have. In addition, the writing protrusions 312, 314, 316 are provided on the outer surface side of the scanning wax bite 310, 310A, 310B and are formed integrally with the variable fitting parts 311, 313, 315, and are preferably formed to protrude so as to correspond to the mating target part. .

Moreover, referring to FIGS. 1A to 1B, the mastication protrusion 312 is formed in an arcuate shape corresponding to a preset standard dental arch profile da, and may be formed to have an outer surface corresponding to an external shape of a tooth. That is, the mastication protrusion 312 may be formed to include a mastication surface corresponding to an actual tooth shape and an interdental correspondence portion 312b.

Here, the interdental correspondence part 312b may be marked as an intaglio, and may be used as an alignment mark part that becomes an alignment criterion when disposed between the implantation target part and the mating target part. In detail, the alignment marker may be aligned in response to a predetermined visible reference index on either side of the placement target part and the mating target part. In this case, the visible reference indicator may be formed as the interdental of the remaining teeth on the contralateral side, and in some cases, an upper platoon or a lower platoon corresponding to the midline of the human body may be set as the visible reference indicator.

Accordingly, when correcting the scanning wax bites 310, 310A, 310B, the inner and outer surfaces may be accurately corrected corresponding to the implantation target portion and the mating target portion. In addition, even if the corrected scan wax bites 310, 310A, and 310B are repeatedly installed/separated between the implantation target portion and the mating target portion, the corrected position may be uniformly guided.

Alternatively, as shown in FIG. 2, the mastication protrusion 314 may be provided in a simply protruding shape in a cross-sectional area corresponding to a preset standard dental arch profile. In this case, since the shape of the scanning wax bites 310, 310A, and 310B is simplified and manufactured, productivity is improved and manufacturing cost may be reduced. In this case, the alignment mark portion 314b may be further included on a predetermined outer surface of the writing protrusion 314 and the variable fitting portion 313 integrally formed therewith. The alignment mark portion 314b may be manufactured in a state indicated when mass production of the scanning wax bite 310, 310A, 310B, and in some cases, the operator may perform the correction in the step of correcting the scan wax bite 310, 310A, 310B. It can also be marked with a tool.

In addition, as shown in FIGS. 3A to 3B, in the mastication protrusion 316, the boundary region between the anterior and posterior teeth is depressed toward the variable fitting 315 so that the anterior and posterior teeth may be partitioned from each other. In this case, the outer surface 316a of the mastication protrusion on the anterior tooth side may be formed to have an outer surface corresponding to the outer shape of the tooth. That is, the mastication protrusion 316 may be formed to include a mastication surface corresponding to an actual tooth shape and an interdental correspondence portion 316b.

In addition, the outer surface 316c of the mastication protrusion on the posterior tooth side may be partitioned with the outer surface 316a of the mastication protrusion on the anterior tooth side to protrude in a cross-sectional area corresponding to a preset standard dental arch profile. Here, on the occlusal surface of the mastication protrusion 316, a friction mark portion k including at least one of a scratch and an intaglio is formed to improve adhesion with the curable resin filled during relining so as to correspond to the vertical height of the person to be treated. Can be. In this case, the friction mark portion k is preferably formed of at least one of a plurality of scratches and a plurality of intaglios so that the surface area of the mastication protrusion 316 is increased.

Here, a separate dental resin for vertical diameter alignment between the mastication protrusion 316 and the opposing target portion may be filled and occluded, thereby relining. These dental resins may be provided with alginate, putty, or curable resin, which are commonly used when taking impressions in dentistry.

Accordingly, filling of a curable resin filled in the occlusal surface of the mastication protrusion 316 corresponding to the mastication protrusion 316 in which the friction mark portion k is formed on the occlusal surface due to scratches and intaglios, and the vertical height of the operator The surface area for adhesion is increased. Through this, since the adhesion between the mastication protrusion 316 and the curable resin is improved, a scanning image in which a precise vertical height is calculated can be obtained.

In addition, the mastication protrusion 316 may have a concave portion in which a boundary region between an anterior tooth and a posterior tooth is depressed toward the variable fitting portion 315. Here, it is preferable to understand that the depression is formed in which a region corresponding to a canine tooth or a premolar tooth of the tooth is formed depression. Accordingly, an anterior tooth portion formed similar to an actual tooth based on the depression portion and a posterior tooth portion formed to increase a surface area during relining are partitioned from each other, so that accuracy can be improved when obtaining a vertical height and a motion image.

In detail, the motion image c30 shows the three-dimensional motion trajectory of the jaw joint moving through the dynamic scanner in a state in which the outer surface of the oral cavity is exposed and in a state in which the mastication protrusion 316 and the mating target part 3 are mutually occluded. It is obtained by motion scanning. At this time, the three-dimensional motion trajectory appears as a trajectory of a gothic arch shape as the jaw joint moves in a three-dimensional space including the left and right directions, the front and rear directions, and the up and down directions based on the interdental correspondence part 316b. Here, the motion image c30 may be obtained by motion scanning based on a reference point such as an upper end of the interdental correspondence portion 316b of the scanning wax bite 310B disposed on the lower jaw. Alternatively, in some cases, when the upper jaw is an implantable portion and the mandible is an opposing portion, motion scanning may be performed based on the upper end of the interdental of the remaining anterior teeth of the opposing portion.

Accordingly, unlike the prior art in which only a two-dimensional gothic arch was obtained by attaching a separate grave plate to the oral cavity, the digitized motion for the three-dimensional motion trajectory of the jaw joint that moves through the dynamic scanner while the outer surface of the oral cavity is exposed. The image c30 is quickly acquired. Therefore, the working time is remarkably shortened, the convenience of the procedure is remarkably improved, and the reliability of the dental restoration design information obtained through this can be remarkably improved. In addition, the mastication surface of the artificial crown to be finally manufactured can be precisely designed in correspondence with the movement of the jaw joint of each person to be treated. That is, since the motion image c30 acquired through the dynamic scanner includes a Gothic arch image of a three-dimensional motion trajectory of the jaw joint, it is possible to obtain a precise Gothic arch image unlike a conventional Gothic arch tracer.

At this time, there is a fear that the motion trajectory of the jaw joint moving by the dynamic scanner may not be recognized due to the same color and smooth surface structure during motion scanning of the scanning wax bite 310B. That is, when the dynamic scanner scans the motion of the jaw joint, a dynamic image obtained by scanning the motion change of the lower recognition surface of the scanning wax bite is converted into a 3D modeling file. At this time, the recognition rate of the dynamic scanner was decreased due to the smooth recognition deterioration surface during the image conversion process. To solve this, a motion recognition enhancement part 317 may be provided/formed on the recognition-degraded surface of the scanning wax bite 310B.

In detail, as shown in FIGS. 3A to 7, the scanning wax bite 310B provides a visual reference index when acquiring the gothic arch motion image c30 for the three-dimensional motion trajectory of the jaw joint (j in FIG. 8) of the patient to be treated. It may further include the motion recognition enhancement unit 317 disposed on the recognition lowering surface to provide. In this case, the recognition deterioration surface means a smooth surface portion of the front portion of the scanning wax bite 310B.

Here, the motion recognition enhancement unit 317 according to an embodiment of the present invention may be provided with a plurality of registration markers 317b attached along the outer surface of the scanning wax bite 310B. In this case, the matching marker is preferably provided/formed of a radiopaque material, and is preferably provided/formed by being spaced apart from at least three places or more along the outer surface of the scanning wax bite 310B. Such a matching marker may be provided as a solid body having a predetermined volume and attached to the implantation target part, and a dental resin having a density at which radiation is impermeable is injected and cured to the outer surface of the implantation target part to a predetermined size and adhered. It could be.

In addition, the interval g2 between each of the registration markers 317b may be disposed at an interval less than the maximum moving radius g1 of the jaw joint that is moved in the left-right direction, the anteroposterior direction, and the vertical direction. Here, when the interval g2 between each of the registration markers 317b exceeds the maximum moving radius g1 of the jaw joint, the scanning wax bite 310B or There is a concern that the motion trajectory may not be recognized due to the same color and smooth surface structure of the implanted part.

Therefore, as the interval g2 between each of the registration markers 317b is disposed at a distance less than the maximum moving radius g1 of the jaw joint, an accurate motion image is obtained during motion scanning through the dynamic scanner. The precision of the crown can be remarkably improved.

Meanwhile, referring to FIG. 4, the motion recognition enhancement part may be provided as a powder spray applied to the surface of the scanning wax bite to form a discontinuous uneven surface 317c.

Here, as the powder spray is applied to the surface of the scanning wax bite instead of the above-described matching marker, the surface of the wax bite may be formed as a discontinuous uneven surface 317c. Through this, when motion scanning of the jaw joint through the dynamic scanner, each of the discontinuous uneven surfaces 317c on the surface of the wax bite may provide a reference point for motion.

Further, referring to FIG. 5, the motion recognition enhancement unit may be displayed as a plurality of intaglios 317d at predetermined intervals along the surface of the scanning wax bite. Further, referring to FIG. 6, the motion recognition enhancement unit may be indicated by a water-insoluble ink 317e laminated in a plurality of patterns on the surface of the scanning wax bite.

At this time, when the motion recognition enhancement unit is provided in a pattern stacking method using a matching marker, intaglio, or water-insoluble ink, the interval between each motion recognition enhancement unit is the maximum of the jaw joint that moves in the left and right directions, the front and rear directions, and the vertical direction. It can be arranged at intervals less than the moving radius.

Through this, in the motion image, the motion of the motion recognition enhancement unit 317 according to the movement of the jaw joint is imaged and displayed. In addition, data on a 3D motion trajectory of the jaw joint may be obtained based on 3D surface information/data of the motion recognition enhancement unit 317 through the planning unit. Accordingly, the precision of the motion image can be remarkably improved.

In addition, the motion recognition enhancement unit for enhancing motion recognition is provided on the smooth surface of the scanning wax bite formed integrally with a paraffin wax material. Through this, the recognition degree of the 3D motion trajectory can be remarkably enhanced during motion scanning through the dynamic scanner.

In addition, the motion recognition enhancement unit reinforces the recognition deterioration surface of the scanning wax bite, so that the motion image of the 3D motion trajectory of the jaw joint corresponding to the Gothic arch shape is accurately acquired as 3D 3D data. Therefore, the precision of the tooth restoration that is finally manufactured based on the motion image can be remarkably improved.

Meanwhile, referring to FIGS. 1A to 3B, it is preferable that the clearance portions 311a, 313a, and 315a are formed to exceed the width of the standard gum portion. Here, the width of the standard gum part is preferably understood as a standardized transverse interval between the outer and inner sides of the gum part calculated in consideration of age-specific and gender anatomical deviations. It is preferable to understand this as a standardized transverse interval between the labial and lingual sides of the gums calculated in consideration of age-specific and gender anatomical deviations. Moreover, it is preferable to understand that the width of the standard gum part substantially corresponds to or is set to be greater than or equal to the standard dental arch profile (da).

Accordingly, the clearance portions 311a, 313a, and 315a may be formed to have an area that extends laterally than the width of the standard gum portion. Through this, the scanning wax bites 310, 310A, 310B may be arranged to completely surround the inside and outside of the gum part of the implantation target part. In addition, the inner surfaces 311b, 313b, and 315b of the variable fitting portions 311, 313, 315 may be formed to be concave with a smaller curvature than the convex outer surface profile of the gum portion on the side of the average implantation target portion. Accordingly, a sufficient clearance volume capable of correcting the fitting may be secured while the outer surface of the implantation target portion is in full contact with the variable fitting portion 311.

On the other hand, in the present invention, the inner surfaces 311b, 313b, 315b of the scanning wax bites 310, 310A, 310B are substantially the same as the inner surfaces 311b, 313b, 315b of the variable fitting parts 311, 313, 315, so the same number It is preferable to understand as described and illustrated as. In addition, the outer surface portions 312a, 314a, 316a of the scanning wax bites 310, 310A, 310B are substantially the same as the outer surfaces 312a, 314a, 316a of the writing protrusions 312, 314, 316, so they are described with the same number and It is desirable to understand as shown.

In addition, the scanning wax bite 310, 310A, 310B has a thickness between the inner surfaces 311b, 313b, 315b of the variable fitting portions 311, 313, 315 and the outer surfaces 312a, 314a, 316a of the writing protrusions 312, 314, 316 by age and It is preferable that it is formed larger than the standard vertical height calculated by considering the gender anatomical deviation. Therefore, a sufficient clearance thickness that can be corrected by simply occluding pressure while the inner and outer surfaces of the scan wax bites 310, 310A, 310B, which are softened by heating treatment, are disposed between the implantation target part and the mating target part. Can be secured.

Further, a reinforcing surface portion (not shown) may be further formed to support between the variable fitting portions 311, 313, 315 formed in an arc shape and both ends of the writing protrusions 312, 314, 316. Through this, even if the occlusal pressure is applied while the inner and outer surfaces of the scanning wax bites 310, 310A, and 310B are softened and the support strength is reduced, twisting or fracture can be prevented. In addition, when corresponding to the maxillary side, since the reinforcing surface portion (not shown) is corrected for occlusion in a state supported by the hard palate, the scanning wax bite 310, 310A, 310B may be prevented from moving while sliding during occlusion. have. Accordingly, the corrected scan wax bites 310, 310A, and 310B can be precisely corrected to accurately guide the vertical height.

On the other hand, the scanning wax bite (310, 310A, 310B) is prepared (s410), the scanning wax bite (310, 310A, 310B) is warmed to soften, the mastication protrusions (312, 314, 316) and the target portion ( 3) are occluded with each other (s420).

In detail, the scanning wax bites 310, 310A, and 310B are standardized as ready-made products and prepared for general use, but are selected and used as products having a size suitable for the patient to be treated. And, the scanning wax bite (310, 310A, 310B) is disposed between the insertion target portion (2) and the mating target portion (3), the variable fitting portion ( 311,313,315) are softened when heated above a preset temperature. In addition, the mastication protrusions 312, 314 and 316 facing/corresponding to the mating target portion 3 are softened when heated to a predetermined temperature or higher.

In addition, before or after each image data is acquired, the scanning wax bite 310, 310A, 310B is disposed between the implantation target portion 2 and the mating target portion 3 while the inner and outer surfaces of the scan wax bite 310, 310A, and 310B are softened. At this time, the inner and outer surfaces of the scanning wax bites 310, 310A, and 310B are warmed and softened to have a weaker strength than the implantation target part 2 and the mating target part 3. Accordingly, the inner profile of the variable fitting portions 311, 313, 315 and the outer profile of the mastication protrusion 312 are deformed to correspond to the outer profiles of the implantation target portion 2 and the mating target portion 3, respectively, by the occlusal pressure. . In addition, the thickness between the variable fitting portions 311, 313, and 315 and the writing protrusions 312, 314, and 316 is deformed to correspond to the vertical height VD.

In detail, the inner surface of the variable fitting part 311 is concavely depressed by the occlusal pressure so as to correspond to the convex outer surface of the implantable part 2. Accordingly, an intaglio groove corresponding to the placement target portion 2 may be formed in the variable fitting portion 311 and corrected by the fitting correcting portion. In addition, the outer surface of the mastication protrusion 312 is formed by the occlusal pressure so as to correspond to the end of the mating target part 3, for example, the end profile of the antagonist, and can be corrected by the bite correction unit. . In addition, the gap between the joint correction unit and the occlusal correction unit may be corrected to substantially correspond to the vertical height (VD).

In addition, each image data obtained in a state in which the joint correction unit and the occlusal correction unit are formed and the re-hardened scan wax bites 310, 310A, and 310B are installed includes the vertical height (VD) information. As described above, since the scan wax bites 310, 310A, and 310B are standardized and mass-produced in a certain form, the production cost and production period are shortened, and thus, it is economical and can be easily corrected to a surface profile suitable for each person to be treated. Accordingly, the vertical height (VD) calculated/acquired using the corrected scan wax bites 310, 310A, 310B and the precision/accuracy of each image data can be remarkably improved.

It is preferable that the scanning wax bites 310, 310A, and 310B are formed of paraffin wax. The paraffin wax is solid at room temperature and has a predetermined support strength, and it is easy to correct cutting using a tool such as a knife. Therefore, when natural/repaired teeth remain in the implantation target portion 2 or the length of the scanning wax bites 310, 310A, and 310B is long, cutting or dividing may be used. In addition, when the interdental correspondence portion 312b or the alignment mark portion 314b is formed on the mastication protrusions 312, 314, 316, it can be cut or divided based on this, so that the usability can be further improved.

In addition, the paraffin wax has a melting point in the range of 47 to 64° C. and has physical properties that soften even without applying high temperature heat. Therefore, even if it is applied directly to the oral cavity in a heated state, it is safe, and it is rapidly cured at less than a preset temperature, so that the degree of conformity with the implantation target portion 2 and the mating target portion 3 can be maintained. Moreover, since the paraffin wax has a low shrinkage in the process of softening and curing, the degree of conformity between the implantation target part and the mating target part, and the accuracy of the calculated vertical height can be remarkably improved.

Here, the paraffin wax preferably contains 70 to 85% by weight of paraffin (for example, ceresin) and other additives in the remaining weight% based on the total weight%. For example, the paraffin wax may include 77 to 85% by weight of ceresin, 7 to 13% by weight of beeswax, 1.5 to 3% by weight of canaoba, 2 to 4% by weight of resin, and 1.5 to 3% by weight of microcrystalline wax.

On the other hand, it is preferable that the inner and outer surfaces of the scanning wax bites 310, 310A, and 310B are heated in the range of 40 to 55°C. In addition, the scan wax bites 310, 310A, 310B, which are softened by heating the inner and outer surfaces, respectively, are disposed between the implantation target part 2 and the mating target part 3 and are placed in a preset vertical height (VD). Occlusal pressure is applied so as to correspond. Accordingly, the inner surface portions of the scanning wax bites 310, 310A, and 310B are pressure-corrected so as to correspond to the outer surface profile of the implantation target portion 2, and are integrally formed with the joint correction unit. In addition, the outer surface portions of the scanning wax bites 310, 310A, 310B are corrected to correspond to the mating target part 3 and are integrally formed with the bite correction part. In this case, a gap between the joint correction unit and the occlusion correction unit may be formed to correspond to the vertical height (VD).

Here, when the inner and outer surfaces of the scanning wax bites 310, 310A, and 310B are heated to less than 40° C., they cannot be softened to have a strength less than that of the implantation target part 2 and the mating target part 3. . For this reason, even when the occlusal pressure is applied, it is difficult to correct the inner and outer surfaces of the scanning wax bites 310, 310A, and 310B to correspond to the outer profiles of the implantation target portion 2 and the mating target portion 3. On the other hand, if the temperature exceeds 55°C, the phase changes to a liquid phase excessively. For this reason, the fluidity of the inner and outer surface portions of the scanning wax bites 310, 310A, 310B is excessively increased, and thus it is difficult to correct into a clear shape corresponding to the implantation target portion 2 and the mating target portion 3. In addition, if the scanning wax bite 310, 310A, 310B is directly installed in the oral cavity, there is a risk of burns due to high temperature.

Accordingly, the inner and outer surfaces of the scanning wax bites 310, 310A, and 310B have a strength weaker than that of the implantation target part and the mating target part, but are softened to a degree that can maintain a substantially corrected shape. It is preferable to heat treatment in the range of °C.

Further, the scanning wax bite 310, 310A, 310B is preferably heated to be limited to the inner and outer surfaces corresponding to the implantation target part 2 and the mating target part 3. Accordingly, while maintaining the overall shape of the scanning wax bite (310, 310A, 310B), the inner surface portion and the outer surface portion, respectively, the insertion target portion (2) and the mating object portion (3) to be easily molded/occupied with each other. Can be corrected.

At this time, the scanning wax bites 310, 310A, 310B may be put into a container in which hot water of 45 to 55° C. is accommodated to be heated. Alternatively, heating may be performed using a heating device through which hot air is discharged, and any means capable of softening the inner and outer surfaces of the scanning wax bites 310, 310A, and 310B may be applied to the present invention.

In addition, a separate dental resin may be filled and occluded between the joint correction unit and the implantation target portion 2 so that the joint correction unit is formed more precisely, and thus relining may be performed. That is, as the dental resin is filled in the gaps or pores with the implantation target part 2, which may occur while the paraffin wax is cured, the degree of conformity between the joint correction part and the implantation target part 2 is further improved. Can be. These dental resins may be provided with alginate, putty, or curable resin, which are commonly used when taking impressions in dentistry, and the soft tissue of the gum part (g) of the implantation target part 2 is not excessively pressed and deformed. It can be provided with a viscosity.

On the other hand, the scanning wax bites 310, 310A, 310B are integrally formed to have a body substantially between the inner surface portion corresponding to the implantation target portion 2 and the outer surface portion corresponding to the mating object portion 3 It is preferably formed as. Therefore, due to the lamination of wax and curable resin of a releasable material on the inner and outer surfaces of the occlusal check means such as a tray or splint, the lamination portion slips during occlusion, and the conventional problem that the lamination portion is twisted in the lateral direction or the position is changed can be fundamentally solved. I can. That is, since the occlusal pressure can be applied substantially in the vertical direction of the scanning wax bites 310, 310A, 310B, the accuracy of the calculated vertical diameter VD can be remarkably improved. In this way, based on the corrected scan wax bites 310, 310A, 310B, the implantation target part 2 and the mating target part 3 are occlusal arrangements to correspond to the vertical height (VD) optimized for the patient to be treated. I can.

Here, when the scanning wax bites 310, 310A, 310B are directly installed and corrected in the oral cavity, the vertical height (VD) can be determined by expression of intention according to the direct mastication sensitivity of the operator, and around the jaw joint and It can also be determined by measuring the electrical/chemical signals of the jaw muscles. That is, in a state where the scanning wax bite 310, 310A, 310B is inserted into the oral cavity, the scanning wax bite 310, 310A, 310B corresponds to the vertical height (VD) as the operator actually occludes the upper and lower jaw. Can be corrected.

Alternatively, when the implantation target portion and the opposing target portion are provided as an impression model, the scanning wax bites 310, 310A, and 310B may be disposed between the impression models connected to the upper and lower jaws through an articulator. In addition, while the impression model is occluded and arranged to correspond to the vertical height (VD) statistically calculated using the articulator, the occlusal pressure may be applied. Accordingly, the inner and outer surfaces of the scanning wax bites 310, 310A, and 310B may be corrected by the joint correction unit and the occlusal correction unit.

As described above, the present invention uses the ready-made wax bite for scanning 310, 310A, 310B, while reducing the cost, while the surface profile and the interval between the inner and outer surfaces thereof are adjusted to the vertical height (VD) of each patient. It is individually calibrated according to. Therefore, the vertical height (VD) optimized for each person to be treated can be accurately calculated, and through this, the overall accuracy and precision of tooth restoration can be remarkably improved.

At this time, the scanning wax bites 310, 310A, 310B may be disposed between the implantation target part 2 and the mating target part 3 before acquiring each image data, and may be corrected according to the occlusal pressure. Alternatively, image data for the implantation target portion 2 and the mating target portion 3 before the scan wax bites 310, 310A, and 310B are installed are obtained, and the scan wax bites 310, 310A, 310B ) May be additionally obtained for the implantation target part 2 and the mating target part 3 after installation.

On the other hand, through the dynamic scanner, the motion of the jaw joint in the left and right directions, the anteroposterior direction, and the vertical direction of the patient to be treated are recognized by the motion recognition enhancement unit 317 and motion-scanned to obtain a gothic arch motion image of the three-dimensional motion trajectory of the jaw joint. (c30) is obtained (s430). At this time, the motion image c30 is a three-dimensional motion trajectory of the jaw joint of the person to be treated in a state in which the mastication protrusions 312, 314, 316 provided in the scanning wax bite 310, 310A, 310B and the mating target part 3 are mutually occluded. Is obtained by motion scanning.

In detail, referring to FIG. 6, the motion image c30 is a three-dimensional view of the jaw joint in a state in which the outer surface of the oral cavity is exposed through the dynamic scanner, and the mastication protrusion 316 and the opposing target part 3 are interlocked Acquired for the motion trajectory That is, the three-dimensional motion trajectory of the motion of the jaw joint (j of FIG. 8) moving in the left and right directions, the anteroposterior direction, and the vertical direction within the maximum moving radius g1 is obtained by motion scanning through the dynamic scanner. Here, the dynamic scanner is a scanner provided to obtain a motion for a three-dimensional motion trajectory of the jaw joint based on the upper end of the interdental correspondence part 316b of the scanning wax bite 310B when movement of the jaw joint occurs. Means. In this case, the lips may be fixed in an open state through a separate traction device (not shown) so that the outer surface of the oral cavity including the scanning wax bite 310B and the implantation target portion 2 is exposed.

Subsequently, the dynamic scanner may motion-scan the left-right, front-rear, and vertical movements of the jaw joint based on the upper end of the interdental correspondence part 316b while the external surface of the oral cavity is exposed. In this case, it is preferable to understand that motion scanning is a concept of acquiring a trajectory moving from a reference point based on a specific reference point when a motion occurs, unlike scanning that acquires static image data.

Through this, unlike the conventional method in which a gothic arch was obtained by attaching a separate grave board to the oral cavity, the motion image c30 for the three-dimensional motion trajectory of the jaw joint moving through the dynamic scanner is digitized and quickly acquired. Accordingly, the working time can be remarkably shortened and the convenience of the procedure can be remarkably improved.

In addition, the motion image c30 may be obtained through the dynamic scanner in a state in which the scanning wax bite 310B is heated to a predetermined temperature or higher and softened. In detail, the motion image c30 may be obtained in a state in which the mastication protrusion 316 and the mating target part 3 are softened by heating to a predetermined temperature or higher. Accordingly, when the motion image c30 for the three-dimensional motion trajectory of the jaw joint is obtained in a state where the scanning wax bite is heated to a predetermined temperature or higher and softened, the opposing target portion 3 and the writing protrusion ( 316) between the occlusal surfaces are lubricated and fluidly flows. Therefore, the accuracy of the motion image c30 obtained through the dynamic scanner can be remarkably improved, and the mastication protrusion 316 is corrected with the occlusal correction unit (312r in FIG. 10) corresponding to the three-dimensional motion trajectory of the jaw joint. Can be.

Therefore, when the motion image (c30) of the three-dimensional motion trajectory of the jaw joint is obtained in the state where the scanning wax bite 310B is heated to a predetermined temperature or higher and softened, the occlusal surface of the mastication protrusion 316 and the clam The portion that is caught between the target portions 3 flows. Through this, the accuracy of the motion image c30 obtained through the dynamic scanner can be remarkably improved.

Meanwhile, a plurality of scanning images of the implantation target portion and the opposing target portion are obtained using an oral scanner. In addition, a CT image of the oral cavity occluded through the scanning wax bite is obtained using a computed tomography machine.

In this case, it is preferable that the plurality of scanning images include a scanning image obtained with respect to the implantation target portion and the mating target portion before the scanning wax bite is installed. In addition, it is preferable to include a scanning image obtained with respect to the implantation target portion and the mating target portion after the corrected scanning wax bite is installed.

In detail, it is preferable that the plurality of scanning images include a first scanning image of the entire outer surface of the scanning wax bite, which is corrected so that the joint correction unit and the occlusion correction unit are integrally formed. In addition, it is preferable to include a second scanning image of the outer surface of the target portion. In addition, it is preferable to include a third scanning image of an outer surface of the implantation target portion and the mating target portion occluded through the corrected scanning wax bite.

Here, in the first scanning image, three-dimensional surface information on the entire outer surface of the scanning wax bite including three-dimensional surface information (m311r) of the mating correction unit and three-dimensional surface information of the occlusal correction unit is converted into an image. Is displayed.

In addition, in the second scanning image m12, three-dimensional surface information on the outer surface of the target portion is displayed as an image. In this case, when the antagonist teeth remain in the antagonist target portion, the 3D surface information t12 of the antagonist teeth is displayed as an image in the second scanning image m12. Alternatively, when the opposing target portion side is edentulous, the second scanning image m12 may display 3D surface information of the gingival portion of the opposing target portion side as an image. In the step of generating the three-dimensional planning image, standardized dental data on the side of the opposing target portion previously stored in the planning unit may be imaged and arranged virtually.

In addition, in the third scanning image, the gum part of the implantation target part is covered on the inner surface side of the scanning wax bite, and the end of the mating target part is partially covered on the outer surface part, so that three-dimensional surface information on the outer surface of the occlusal state is displayed. It is displayed as an image. In this case, the third scanning image is obtained in a state in which the implantation target portion and the mating target portion are occluded through the scanning wax bite. Accordingly, in the third scanning image, three-dimensional surface information corresponding to the scanning wax bite and the labial outer surface and the buccal partial outer surface of the opposing object portion are displayed as images.

Here, the plurality of scanning images may be obtained by directly scanning the oral cavity of the patient before and after the installation of the scanning wax bite using the oral scanner. In this case, a traction device for pulling soft tissue such as lips and cheek mucosa to be spaced apart from the outside of the gum may be used. Of course, in some cases, a plurality of the scanning images may be obtained by scanning the impression model before and after the scanning wax bite is installed.

Meanwhile, the CT image m16 is preferably obtained by directly imaging the oral cavity through a computed tomography machine in a state in which the scanning wax bite is installed and occluded. Through this, the CT image m16 contains 3D data of alveolar bone on the side to be implanted, excluding soft tissues such as lips, cheek mucosa, and gums through which radiation is transmitted due to its low density, and 3D data on the antagonist teeth on the side of the target. It is imaged and displayed.

Moreover, it is preferable that the scanning wax bite is formed in a predetermined color so as to be clearly displayed on the motion image and the plurality of scanning images. In addition, the scanning wax bite is preferably formed to have a density of less than 2.0 g/cm 3 so as not to be transmitted and displayed when the CT image (m16) is acquired. Therefore, the CT image (m16) obtained with the scan wax bite installed and occluded is considered to have a vertical height, but the alveolar bone on the side to be placed and the antagonist/alveolar bone on the side to be placed are clearly displayed. do. Through this, the accuracy and precision of each image data acquired using the imaging device can be remarkably improved.

The plurality of scanned images and the CT images m16 thus obtained are transmitted to the planning unit. In addition, it may be collected as information for establishing a tooth restoration plan through the tooth restoration through a subsequent image alignment and registration process.

Meanwhile, the integrated scanning image is generated by aligning and arranging a plurality of the scanning images to correspond to the vertical height through the planning unit. In addition, the integrated scanning image is superimposed and matched based on a common portion with the CT image to generate a 3D planning image.

Here, it is preferable that the integrated scanning image m17 is generated including the following steps. In detail, the first scanning image and the second scanning image m12 are overlapped and aligned based on a common portion with the third scanning image. In this case, it is preferable that the common part of each scanned image is set as a specific part having a boundary that is clearly distinguished from the surroundings while the structure is hard and fluidity due to external force is minimized.

For example, in the first scanning image and the third scanning image, a specific portion of the three-dimensional surface information (v11, v13) of the scanning wax bite displayed identically in each image is selected as a common portion to be set as an overlapping reference point. I can. In addition, in the second scanning image (m12) and the third scanning image, a specific part of the 3D surface information (t12, t13) of the opposing teeth displayed identically in each image is selected as a common part and set as an overlapping reference point. Can be.

Such overlapping reference points may be set in a plurality of places, and through this, the degree of conformity between each image may be remarkably improved in the process of overlapping and arranging images. Through this, the first scanning image and the second scanning image m12 are arranged and arranged in a state in which the vertical height is considered based on the third scanning image.

On the other hand, it is preferable that the first scanning image is swapped so that the three-dimensional surface information m311r of the mold fitting correction unit, which is concave inwardly corresponding to the inner surface of the scanning wax bite, is exposed to the outside. Here, it is preferable to understand that the term "swap" means that a preset image is replaced or exchanged with another image or an image that has been transformed according to image processing.

Accordingly, the three-dimensional surface information m311r of the mating correction unit and the three-dimensional surface information on the outer surface of the mating object are arranged in a state in which the vertical height is considered, and the integrated scanning image m17 is generated.

In detail, the first scanning image includes three-dimensional surface information on the entire outer surface of the scanning wax bite whose inner and outer surfaces are corrected by the occlusal pressure. Hereinafter, the three-dimensional surface information of the wax bite for scanning is preferably understood as the three-dimensional surface information of the wax bite for scanning in a state in which the inner and outer surfaces are corrected.

At this time, the three-dimensional surface information of the wax bite for scanning is stored by connecting a plurality of points having a preset coordinate value to each other. For example, the three-dimensional surface information of the scanning wax bite can be stored as an STL file (StereoLithography file), and has a triangular surface by a plurality of points and a line connecting them corresponding to the outer surface shape of the scanning wax bite. Is formed. Accordingly, the 3D surface information of the scanning wax bite may be stored as a 3D surface model having a substantially hollow interior.

Here, the three-dimensional surface information of the scanning wax bite includes three-dimensional surface information of the occlusal correction unit on the side of the outer surface that is convexly displayed outward. In addition, the three-dimensional surface information of the scan wax bite includes three-dimensional surface information m311r of the matching correction unit on the side of the inner surface portion that is concavely displayed inward.

At this time, a boundary line (x) is set along an outer edge of the 3D surface information m311r of the matching correction unit, and the 3D surface information on the side of the writing protrusion is set as an erasing area (d). In addition, as the erasing area d is erased, the image is swapped so that the 3D surface information m311r of the mating correction unit is convexly exposed toward the mating target part. Here, it is preferable to understand that the outer edge of the three-dimensional surface information m311r of the matching correction unit is a line set corresponding to the outermost edge of the margin. In addition, in the present invention, it is preferable to understand that the term “erased” encompasses the deletion of the corresponding image or data in the overall image data and the process of being transparently invisible.

Meanwhile, the three-dimensional surface information of the scanning wax bite is stored as surface information having no thickness. Accordingly, in the 3D surface information m311r of the shape fitting correction unit, the coordinate values for the inner profile and the coordinate values for the outer profile are substantially the same. In addition, the three-dimensional surface information m311r of the fitting correction unit is obtained by being corrected to substantially match the outer surface profile of the implantation target portion. Therefore, the three-dimensional surface information (m311r) of the fitting correction unit substantially corresponds to the outer surface profile of the gum portion of the implantation target portion. In this case, it is preferable to understand that denoted by m21 in FIG. 8 means the first scanning image swapped with the three-dimensional surface information m311r of the matching correction unit exposed to the outside.

Accordingly, as the first scanning image including the three-dimensional surface information of the scan wax bite is swapped, three-dimensional surface information on the outer surface profile of the gum portion of the implantation target portion can be easily obtained. Moreover, instead of the oral cavity with high fluidity of the soft tissue, the implantation target portion from the scanning image of the scanning wax bite, which has solid strength in the cured state, although it has fluidity that can be corrected by the occlusal pressure in the softened state. 3D surface information corresponding to is obtained. Through this, the reliability of image information for designing the dental restoration can be remarkably improved.

Here, it is preferable that the third scanning image is erased within the integrated scanning image m17 so that the first scanning image m21 swapped with the second scanning image m12 is clearly displayed.

Meanwhile, a portion commonly displayed in the integrated scanning image m17 and the CT image m16 is set as a registration reference point, and overlapped and matched. Through this, three-dimensional surface information (m311r) of the alignment correction unit displayed on the swapped first scanning image (m21), three-dimensional alveolar bone data (a16) on the side to be implanted, and three-dimensional surface information ( t12) and the 3D planning image m20 including 3D data is generated. In this case, the 3D data of the opposing teeth displayed on the CT image m16 may be matched so as to be substantially integrally overlapped with the 3D surface information t12 of the opposing teeth displayed on the integrated scanning image m17.

At this time, the plurality of the scanning images are aligned based on the third scanning image obtained by scanning in an occlusal state through the scanning wax bite, and the CT image m16 is occluded through the scanning wax bite. It is acquired as a state. Accordingly, the three-dimensional surface information and three-dimensional data displayed on the CT image m16 and the integrated scanning image m17 are aligned and matched corresponding to substantially the same vertical height (VD). Accordingly, when the integrated scanning image m17 and the CT image m16 are matched, the first planning data with minimized errors may be obtained. Through this, while the matching between each image data is easy and the matching process is simplified, the accuracy and precision of the collected information can be remarkably improved.

In this way, the height of the tooth restoration is set based on the generated three-dimensional planning image m20. In addition, design information (c20) of the tooth restoration whose mastication surface shape is set in consideration of the three-dimensional surface information (t12) of the opposing teeth is virtually arranged in the three-dimensional planning image (m20).

In addition, the placement position and direction h20 of the fixture may be set through the 3D data a16 of the alveolar bone on the side to be placed based on the CT image m16. In addition, a virtual fixture (f20) capable of supporting the mastication pressure is virtually arranged corresponding to the placement position and direction (h20), but a real fixture corresponding to the virtual fixture (f20) is prepared or manufactured. I can. In addition, a real abutment may be prepared or manufactured to mediate between a real tooth restoration manufactured based on the design information c20 of the tooth restoration and the real fixture.

Meanwhile, the motion image c30 is converted into three-dimensional data and displayed overlaid on the virtual authoring surface included in the design information c20 of the tooth restoration (s440). In detail, the vertical height is considered based on the three-dimensional planning image m20, and design information c20 of the tooth restoration including a virtual mastication surface is generated. In addition, the motion image c30 is superimposed on the design information c20 of the tooth restoration, and an overlapping occlusal area c31 is displayed on the virtual mastication surface.

In detail, as shown in Figs. 8 to 9, the overlapping occlusal area (c31) is set on the virtual mastication surface of the virtual artificial crown, which is included in the design information c20 of the tooth restoration, and is designed to be occluded with the opposing target portion, and It is preferably displayed. Here, design information (c20) of the tooth restoration from which a virtual mastication surface is extracted in consideration of the 3D surface information (t12) of the opposing teeth is virtually arranged in the 3D planning image (m20). In addition, the motion image is superimposed on the design information c20 of the tooth restoration so that the overlapping occlusal area c31 is displayed.

And, the design information (c20) of the tooth restoration virtually arranged in the three-dimensional planning image (m20) is a three-dimensional motion trajectory including the left and right directions, the front and rear directions, and the vertical direction based on the motion image through the planning unit. It can be virtually moved along. At this time, when the design information (c20) of the tooth restoration is virtually moved by the planning unit, the area overlapping with the three-dimensional surface information (t12) of the antagonist teeth of the antagonist object is set as the overlapping occlusal area (c31), and Can be displayed.

Here, the overlapping occlusal area (c31) is preferably understood as data on a 3D area in which the design information (c20) of the tooth restoration overlaps with the opposing target portion when the virtual mastication surface moves along a 3D motion trajectory. . In addition, the overlapping occlusal area c31 may be displayed on the planning unit in a color different from that of the remaining teeth and oral tissues.

In addition, the overlapping erasing area c31a with respect to the overlapping occlusal area c31 is set, so that the design information c20 of the tooth restoration is corrected. In this case, it is preferable to understand that that the overlapping and erasing area c31a is set includes deleting an image or data for the overlapping occlusal area c31 and being transparently invisible. In addition, the overlapping and erasing area c31a refers to an area set in a Gothic arch shape corresponding to a three-dimensional motion trajectory on the virtual writing surface.

Subsequently, the corrected design information (c20a) of the tooth restoration is transmitted from the planning unit to the manufacturing apparatus, and a real tooth restoration is manufactured. In this case, the 3D planning image m20 including the corrected design information c20a of the tooth restoration may be stored as a 3D printer standard file such as the STL file described above. Through this, a real tooth restoration accurately corresponding to the corrected design information c20a of the tooth restoration can be easily manufactured. Of course, the real tooth restoration may be manufactured using a milling machine or a mold device.

Accordingly, the design information c20 of the tooth restoration virtually arranged in the 3D planning image m20 is moved along the 3D motion trajectory by the planning unit. Subsequently, the design information c20 of the tooth restoration is accurately corrected as the three-dimensional area of the virtual mastication surface overlapping the opposing object portion is erased. Accordingly, the manufacturing precision of the mastication surface of the final manufactured dental restoration can be remarkably improved. Moreover, the processing time of the dental restoration actually manufactured based on the design information (c20a) of the tooth restoration that has been corrected by erasing the overlapping and erasing area (c31a) through the motion image (c30) is significantly reduced, and the working convenience is remarkably reduced. It can be improved.

In addition, it is preferable that the virtual writing surface of the design information c20a of the tooth restoration, which is corrected by erasing the overlapping erasing area c31a, is set to be recessed in a Gothic arch shape corresponding to the three-dimensional motion trajectory of the jaw joint.

In addition, it is preferable that the mastication surface of the tooth restoration manufactured based on the corrected design information (c20a) of the tooth restoration is integrally manufactured in a form recessed into the Gothic arch shape. Here, the dental restoration means a real restoration corresponding to the design information (c20a) of the dental restoration, and the writing surface of the tooth restoration corresponds to the virtual writing surface in which the overlapping erasing area (c31a) has been erased and corrected. It means the real work side.

Through this, based on the corrected design information (c20a) of the tooth restoration as the virtual writing surface of the design information (c20) of the tooth restoration is set to be depressed and erased in a Gothic arch shape corresponding to the three-dimensional motion trajectory of the jaw joint. As a result, the mastication surface of the dental restoration is prepared. Therefore, the occlusal sensitivity of the finally manufactured tooth restoration can be remarkably improved.

In addition, as the virtual writing surface is depressed and erased in a Gothic arch shape corresponding to the three-dimensional motion trajectory of the jaw joint, a real writing surface is manufactured based on the corrected design information c20a of the tooth restoration. Therefore, the additional correction work required after the final manufacture of the tooth restoration is minimized, so that the convenience of the procedure can be significantly improved.

As described above, in the present invention, the vertical diameter can be calculated by a simple method in which the occlusal pressure is applied while the inner and outer surfaces of the scan wax bites 310, 310A, and 310B prepared as standardized ready-made products of various sizes are heated. Therefore, unlike the conventional case of using a custom-made splint that increases cost/time or a tracer that is inconvenient to operate, the time and cost required for calculating the vertical height can be reduced while the convenience of use can be significantly improved. At this time, the scanning wax bites 310, 310A, 310B are formed of paraffin wax and are easily deformed in response to the soft tissue gum (g) when occluding at a predetermined temperature or higher, and are rapidly cured to precisely guide the vertical dimension. can do. In addition, since the correction of the scan wax bites 310, 310A, and 310B and acquisition of each image data can be performed simultaneously at the time of one visit by the person to be treated, the overall period and cost of tooth restoration can be significantly reduced.

Moreover, as the scanning wax bites 310, 310A, and 310B are made of paraffin wax as a single body, since the occlusal pressure is uniformly transmitted corresponding to the occlusal direction, twisting or breakage can be minimized. Through this, since the joint correction unit and the occlusion correction unit are accurately and accurately acquired on the inner and outer surfaces of the scanning wax bites 310, 310A, 310B, the reliability of information collected based on this may be remarkably improved.

In addition, the mold fitting correction unit is re-lined by a curable resin and corrected to have a high degree of conformity with the implantation target portion. Accordingly, it is possible to obtain accurate information through the scanning image of the mold fitting correction unit instead of the implantation target portion 2, which is mostly a gingival tissue having strong fluidity. Through this, the precision in the design and manufacture of the dental restoration can be remarkably improved.

At this time, the terms such as "include", "consist", "have" or "have" described above mean that the corresponding component can be present unless otherwise stated otherwise, It should be construed as not excluding components, but as being able to further include other components. All terms, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art, unless otherwise defined. Terms generally used, such as terms defined in the dictionary, should be interpreted as being consistent with the meaning of the context of the related technology, and are not interpreted as ideal or excessively formal meanings unless explicitly defined in the present invention.

As described above, the present invention is not limited to each of the above-described embodiments, and it is possible to be modified and implemented by those of ordinary skill in the technical field to which the present invention pertains without departing from the scope claimed in the claims of the present invention. And, these modifications are within the scope of the present invention.

310,310A,310B: Wax bite for scanning 311,313,315: Variable joint part
311a,313a,315a: clearance part 311b,313b,315b: inner surface
312,314,316: mastication protrusion 312a,314a,316a: outer surface
312b, 316b: interdental correspondence part 314b: alignment mark
c30: Motion image da: Standard dental arch profile

Claims (10)

Scanning wax bite is disposed between the implantation target and the antagonist so that a plurality of images acquired for the design of the dental restoration are aligned and matched in consideration of the vertical height of the person to be treated, and formed in response to a preset standard dental arch profile. In,
A variable fitting portion having an allowance exceeding the width of the placement target portion, softened when heated to a predetermined temperature or higher, and press-corrected to match the outer surface profile of the placement target portion, and formed of a paraffin wax material; And
It includes a mastication protrusion which is formed integrally with the variable fitting part and protrudes to correspond to the mating target part, and is softened when heated to a predetermined temperature or higher, and is corrected to engage with the mating target part,
The mastication protrusion is formed to protrude in a cross-sectional area corresponding to a preset standard dental arch profile,
A wax bite for scanning, characterized in that a friction mark including at least one of a scratch and an intaglio is formed on the occlusal surface of the mastication protrusion to improve adhesion with the curable resin filled during relining so as to correspond to the vertical height of the subject to be treated. The method of claim 1,
The scanning wax bite is standardized by a preset size corresponding to the standard dental arch profile standardized in consideration of age and gender anatomical deviations, and manufactured in plural, between the inner surface of the variable fitting part and the outer surface of the mastication protrusion. Is formed so that its thickness exceeds the standard vertical diameter,
When obtaining a gothic arch motion image for the three-dimensional motion trajectory of the jaw joint of the patient to be treated, it is disposed on the lowering surface of the recognition of the scanning wax bite to provide a visible reference index, Wax bite for scanning, characterized in that it further comprises a motion recognition enhancement unit arranged at intervals less than the maximum moving radius. The method of claim 2,
The motion recognition enhancement unit is formed of a radiopaque material, and is provided with a matching marker disposed at a plurality of locations on the surface of the scanning wax bite. The method of claim 2,
The motion recognition enhancement part is applied to the surface of the scanning wax bite to form a discontinuous uneven surface, characterized in that it is provided with a powder spray for scanning wax bite. The method of claim 2,
The motion recognition enhancement unit is a scanning wax bite, characterized in that the plurality of intaglios are displayed at predetermined intervals along the surface of the scanning wax bite. The method of claim 2,
The motion recognition enhancement unit is a scanning wax bite, characterized in that the water-insoluble ink laminated in a plurality of patterns on the surface of the scanning wax bite. delete The method of claim 1,
The scanning wax bite is formed of a paraffin wax material,
The paraffin wax is characterized in that it is provided, including 77 to 85% by weight of ceresin, 7 to 13% by weight of beeswax, 1.5 to 3% by weight of canaoba, 2 to 4% by weight of resin, and 1.5 to 3% by weight of microcrystalline wax. Wax bite for scanning. The method of claim 1,
The scanning wax bite is formed of a paraffin wax material, and is formed to have a density of less than 2.0 g/cm 3 so as to be transmitted when a CT image is acquired by a computed tomograph. It is formed of a paraffin wax material containing 77 to 85% by weight of ceresin, 7 to 13% by weight of beeswax, 1.5 to 3% by weight of cannaoba, 2 to 4% by weight of resin, and 1.5 to 3% by weight of microcrystalline wax. A variable fitting part that is pressurized and corrected to match the external profile of the negative, a mastication protrusion that is formed integrally with the variable fitting part and protrudes to correspond to the opposing target part, and a gothic arch motion image for the three-dimensional motion trajectory of the jaw joint of the person being treated. A first step of preparing a wax bite including a motion recognition enhancement unit disposed on a surface to provide a reference indicator;
The inner and outer surfaces of the wax bite are heated to 40 to 55°C to soften, and the wax bite is disposed between the implantation target part and the mating target part, so that the mastication protrusion and the mating target part are mutually occluded. step;
The third step of obtaining a gothic arch motion image for the three-dimensional motion trajectory of the jaw joint by recognizing the motion of the jaw joint in the left and right directions, the anteroposterior direction, and the vertical direction by the motion recognition enhancement unit through the dynamic scanner. ; And
And a fourth step in which the motion image is converted into three-dimensional data and displayed on a virtual writing surface included in the design information of the tooth restoration.

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