JP2001070322A - Artificial tooth set - Google Patents

Abstract

PROBLEM TO BE SOLVED: To efficiently perform implantation work of artificial teeth with high accuracy and to certainly prevent the falling-off of artificial teeth connected in an arranged state and the deformation of the arranged state of artificial teeth during keeping. SOLUTION: An artificial tooth set consists of a large number of artificial teeth T and an arranging supporter 3 having a tooth receiving part 2 capable of arranging artificial teeth T in an arranged state J. The artificial teeth T are integrally connected in the arranged state J in a detachable manner by a connection member and the engaging parts 5 of the connection member 4 are provided to the artificial teeth T.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an artificial tooth set in which a plurality of artificial teeth can be efficiently implanted in a gypsum edentulous jaw model or a partially missing dental jaw model, thereby facilitating the production of dentures.

[0002]

2. Description of the Related Art As artificial teeth T for dentures, those made of acrylic or hard resin for insurance applications, or those made of ceramics not applied are widely known. As shown in FIG. 11, all of these are the front teeth TA (first incisor A1, second incisor A2, canine tooth A).
3) Anterior tooth set with one set of six teeth, one-sided molar TB
(First premolar B1, second premolar B2, first premolar B3,
A set of four molars of the second molar B4), a set of eight molars TB on both the left and right sides, or a total set of 14 molars of the front teeth TA and the molars TB It is generally sold as a set.

[0003] On the other hand, in the production of dentures using such artificial teeth, conventionally, first, a patient is first modeled, and the upper jaw and / or the upper jaw are formed.
Alternatively, an edentulous jaw model of the lower jaw or a partially missing tooth jaw model (hereinafter sometimes collectively referred to as a jaw model) is formed of gypsum.
Then, as shown in FIG. 12, a wax embankment W is provided by pressing a wax at a position where teeth should exist in the jaw model F, and the artificial tooth taken out of the commercial set is placed on the wax embankment W. T is implanted one by one in the order of the row of teeth to form a wax denture in which the artificial teeth T are arranged in an array. At this time,
Wax is also applied to the gingival part to perform shaping.

[0004] Next, the wax dentures are housed together with the jaw model F in the lower ring portion of the flask (container), gypsum is poured up to the lower line L of the gingival portion, and after curing, a gypsum separating agent is applied to the surface of the injection portion. After coating and drying, the upper ring of the flask is mounted on the lower ring to inject gypsum. After curing, the mixture was heated with hot water or the like, and the melted wax was removed by flowing out from between the lower gypsum mold portion and the upper gypsum mold portion of the upper and lower wheel portions separated vertically. After applying the separating material to this removed space, it is filled with acrylic resin or polycarbonate resin, etc., deburred by applying pressure, and in water with the upper and lower wheel parts firmly fixed with screws etc. Heat. Further, it is a general method to remove the resin from the flask after curing and complete the denture of the resin bed through a polishing process.

[0005] However, during the above-mentioned process, in particular, the work of implanting artificial teeth in the above-mentioned arrangement state requires a high level of skill, which is likely to cause quality deterioration, and requires a lot of time, resulting in lower production efficiency. There is a problem.

Accordingly, the present inventor has proposed that in a commercial set,
It has been proposed that a plurality of artificial teeth be integrally connected in an array state using a joint member such as wax in advance. This has the advantage that the planting operation can be performed efficiently and with high precision. In addition, the joint member is covered with a gingival portion when forming the wax bed denture, and is melted and completely removed together with the gingival portion by heating. Therefore, for example, it is possible to prevent such a problem that the joining member remains in the resin bed of the denture of the finished product and deteriorates the quality of the denture.

However, since wax and the like have poor adhesion to artificial teeth and are softened by a rise in temperature, some of the artificial teeth may fall off during storage or may be deformed from the initial arrangement state due to the environmental temperature during storage. There are other problems that need to be solved, such as being unusable.

Accordingly, the present invention provides a method for arranging and storing a plurality of artificial teeth in an arrayed supporter in an arrayed state, and for detachably connecting the artificial teeth to the arrayed supporter while maintaining the arrayed state. Storage of artificial teeth connected in an array while maintaining the advantage that the artificial teeth can be implanted efficiently and with high accuracy based on the provision of an engaging portion for locking the joint member on each artificial tooth. It is possible to reliably prevent the falling off in the middle, and the deformation of the arrangement state, etc., and also, after the denture is completed, the locking portion engages with the resin bed to maintain the artificial tooth, and also prevents the artificial tooth from falling off. The purpose is to provide artificial tooth sets.

[0009]

In order to achieve the above object, the invention of an artificial tooth set according to claim 1 can arrange a plurality of artificial teeth for dentures and arrange the artificial teeth in a removable manner. An array supporter having a plurality of tooth receiving portions, wherein a plurality of artificial teeth are integrated from the array supporter and in the array state in a region of the artificial tooth that is not visible from the outside when the denture is mounted on the oral cavity. The present invention is characterized in that an engaging portion for detachably engaging a joining member for joining an artificial tooth is provided.

Further, in the invention according to claim 2, the joint member is made of wax or synthetic resin and is detachable from the engaging portion.

According to a third aspect of the invention, the arrangement supporter includes a substrate made of a synthetic resin or a metal, and the tooth receiving portion is formed by a concave portion formed by molding the substrate.

According to a fourth aspect of the present invention, the substrate is provided with a cutout hole extending in the arrangement direction and facilitating removal of the artificial tooth.

According to the invention of claim 5, the engaging portion is
It is a groove or a projection extending in the arrangement direction.

[0014] In the invention according to claim 6, the engagement portion is
It is characterized by having a locking portion for retaining.

In the invention of claim 7, the array supporter is an array supporter for anterior teeth that forms an array for front teeth, an array supporter for a molar that forms an array for molars, or an array supporter that forms an array for all teeth. It is a tooth array supporter.

[0016]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a front view showing an embodiment of an artificial tooth set, FIG. 2 is a rear view thereof, and FIG.
FIG.

In FIG. 1, an artificial tooth set 1 includes a plurality of artificial teeth T and an array supporter 3 having a tooth receiving portion 2 in which the artificial teeth T can be arranged in an array state J. Further, the artificial teeth T are integrally connected to the arrangement supporter 3 and detachably connected in the arrangement state J by the joint members 4, and each of the artificial teeth T has an engaging portion 5 for engaging the joint members 4. Is provided.

Here, the "arrangement state J" is similar to the actual state of the alignment of human teeth.
As shown in the figure, the first incisor A1 is curved in a horseshoe shape from the first molar A2 toward the second molar B4, and in the up and down direction, ascends upward toward the second molar B4 as called a curve of speed. To be curved.

In this embodiment, the artificial tooth set 1 is composed of 6
Book front tooth TA (first incisor A1, second incisor A2, canine A
3) is illustrated as an example, and the array supporter 3 is also formed as a front tooth array supporter 3A having an array for front teeth.

The array supporter 3 has a thin substrate 6 made of synthetic resin or metal, and the respective tooth receiving portions 2 are constituted by concave portions 7 formed by molding the substrate 6. For example, when the substrate 6 is made of a synthetic resin as in this example, when the substrate 6 is obtained by a known plastic molding process such as compression molding or injection molding, the tooth receiving portion 2 is formed by the molding process. It is formed in a concave shape. When the substrate 6 is made of metal, the tooth receiving portion 2 is formed by drawing or the like using a press.

Here, in the tooth receiving portion 2, the artificial tooth T
Must be able to be arranged and held in the arrangement state J. For this purpose, the tooth receiving portion 2 is formed at an arrangement position corresponding to each artificial tooth T, and each artificial tooth T is placed in the tooth receiving portion 2 so that the artificial tooth T does not shift or change its direction. It is preferable to form the fitting shape.
In the present example, the tongue side surface Sr of the artificial tooth is
The case where it is formed so as to be directed to the bottom side of FIG.

Next, as shown in FIGS. 4A and 4B, the artificial teeth T are connected to each other by the joint member 4 so that they can be integrally removed from the supporter 3 in the arrangement state J. (Also referred to as an artificial tooth linked body TT), and each artificial tooth T is provided with an engaging portion 5 for locking the joining member 4.

In the present embodiment, the engaging portion 5 is a concave 9 groove extending in the arrangement direction. When the joint member 4 is filled in the concave groove 9, the joint member 4 is locked, and the detachment is prevented. Block. Here, the engaging portion 5 needs to be formed in an artificial tooth region Y that is not visible from the outside when the denture M (shown in FIG. 10) is attached to the oral cavity. Covering area Y1 where artificial tooth T can cover gingival portion 10
And a lingual area Y2 that is exposed from the gingival portion 10 but is not visible due to the lingual side. However, denture M
It is preferable to form the engaging portion 5 in the covering area Y1 from the viewpoints of comfort, maintenance and the like.

In this embodiment, the concave groove 9 has a main portion 9A extending in the arrangement direction and an auxiliary concave groove 9M intersecting with the main portion 9A, thereby further enhancing the locking effect on the joint member 4. I have. In the finished product of the denture M, the gingival part 1
0 replaces wax with acrylic resin or polycarbonate resin, and therefore, the engaging portion 5 also has the advantage of functioning as a prevention of the artificial tooth from falling off from the acrylic resin or polycarbonate resin in the finished product.

As the engaging portion 5, as shown in FIG. 5A, for example, a pin-like body 11 projecting from the artificial tooth T at a small height.
The protrusions 11 of A may be provided. In such a case, the protrusions 11 are scattered in the arrangement direction. Further, as shown in FIG. 5B, a part of the artificial tooth T may be projected as a rib 11B extending in the arrangement direction.

Further, the engaging portion 5 can be further provided with a locking portion 12 for retaining the same. In the case where the engaging portion 5 is the concave groove 9, for example, FIG.
As shown in FIG. 6A, a tapered groove which becomes wider toward the groove bottom can be formed. In the case of the projection 11, as shown in FIG. The part 12 can be formed.

Next, the joint member 4 is preferably completely covered by the gingival part 10, and for this purpose, it is preferable that the protruding height t from the artificial tooth T be about 1.0 mm or less. As a result, the artificial tooth connected body TT
To prevent the joining member 4 from being caught when taking out. In this example, the case of the band-shaped joining member 4 having the protrusion height t of about 0 mm is illustrated.

The joining member 4 can be made of wax or synthetic resin. As the wax, other than dental wax, synthetic wax such as paraffin, various kinds of animal and plant waxes and the like, as long as the wax shows a solidified state at room temperature and has a shape retaining property capable of maintaining the arrangement state J of the artificial tooth T, besides the dental wax. Various things such as for jewelry made by blending can be used. As the synthetic resin, various thermoplastic resins having plasticity at a temperature of 50 ° C. or less can be used. In addition, in both cases of wax and synthetic resin, there is a certain degree of flexibility,
The arrangement state J can be manually corrected, and fine adjustment according to the patient can be performed. Further, the wax melts together with the gingival portion 10 by heating with hot water or the like at the time of casting, and can be separated from the engaging portion 5. In the case of a synthetic resin, it is plasticized by the heating and detached from the engaging portion 5.

In the array supporter 3, FIG.
As in 3, in the present example of the substrate 6, it is preferable to provide a cutout hole 13 extending in the arrangement direction and facilitating removal of the artificial tooth T in the bottom portion of the tooth receiving portion 2. As a result, the connected artificial tooth TT can be pushed out from below, and the connection can be prevented from being damaged during removal.

FIG. 7 shows that the artificial tooth set 1 includes four molar teeth TB (first molar B1, second molar B2, first molar B3, second molar B4). In other words, a case where the array supporter 3 is a molar supporter 3B that has an array for molars and holds the four molars TB in an array state J is illustrated.

In such a case, the artificial tooth T is housed so that its base Sb faces the bottom side of the tooth receiving portion 2 in order to keep the arrangement stable, and the artificial tooth T engages with this base Sb. 5 is preferably formed.

In order to make it easier to remove the artificial tooth connected body TT from the array supporter 3, FIG.
As shown in (B), the width of the substrate 6 is reduced and one side edge 6E is formed.
It is also possible to protrude the tip of the artificial tooth T from. Further, a leg 6A that is bent in an L-shape may be formed on the side edge 6E of the substrate 6 so that the array supporter 3 can be stably mounted on a table or the like.

Next, the case where the denture M is formed by using the artificial tooth set 1 will be exemplified. First, as shown in FIG. 9A, an artificial tooth linked body TT connected in an arrangement state J is
It is taken out from the array supporter 3 and set on the row bank W of the jaw model F. At this time, since the connecting body TT can be fixed at once and stably as one unit, the planting accuracy and the work efficiency can be greatly improved. Further, in the connected body TT, the arrangement state J can be corrected by the deformation to the joint member 4, so that fine adjustment according to the patient can be performed.

Since the joining member 4 can be easily cut by a cutter or the like, partial dentures can be easily manufactured. At this time, the unused artificial teeth T can be stored in the array supporter 3 and can be reused for treating a partially defective site.

After the planting, the gingival part 10 is formed with wax and shaping is performed in the same manner as in the prior art to prepare a wax denture. At this time, the joint member 4 is completely covered with the gingival part 10 and integrated.

Next, as shown in FIG. 9B, the wax dentures together with the jaw model F are housed in the lower ring portion HL of the flask H.
Gypsum is injected up to the lower line L of the gingival part 10, and after curing, a gypsum separating agent is applied to the surface of the injection part. After drying, as shown in FIG. 9 (C), the upper ring H is placed on the lower ring HL.
A plaster is injected with U attached, and wax dentures are buried in the gypsum. After curing, the mixture was heated with hot water or the like, and the melted wax was separated into upper and lower gypsum mold sections 20L and 2L.
Pour from between 0U and remove. At this time, each artificial tooth T is fixed to the upper plaster section 20U. Therefore, if the joining member 4 is made of a synthetic resin, it can be separated from the artificial tooth T because it is softened by the heating. Then, the removed space portion Z is filled with an acrylic resin or a polycarbonate resin or the like, pressure is applied, and the upper and lower wheel portions H are screwed or the like.
Heat in water with U and HL firmly fixed,
Makes the resin easier to flow. Further, after curing, the resin is taken out of the flask H, and the denture M of the resin bed is completed through a polishing process.

[0037]

As described above, according to the present invention, a plurality of artificial teeth are arranged and stored in an arrayed supporter in an arrayed state, and the artificial teeth can be integrally removed from the arrayed supporter while maintaining the arrayed state. Connected with wax material. In addition, the artificial tooth has an engaging portion for locking the wax material.

[0038] Therefore, the connected artificial tooth can be fixed to the jaw model at once and stably as one unit, and the implanting operation can be performed efficiently, with high accuracy, and stably without requiring skill.

Until the connected artificial tooth is taken out, it is held in the same arrangement state in the arrangement supporter.
For example, it is possible to prevent problems such as a partial drop of the artificial tooth from the connected artificial tooth body or a bending or deformation of the arrangement state due to an impact applied during storage or a change in environmental temperature. Therefore, high-precision planting can always be performed.

[Brief description of the drawings]

FIG. 1 is a front view of an embodiment of an artificial tooth set according to the present invention.

FIG. 2 is a rear view thereof.

FIG. 3 is a sectional view taken along line XX of FIG. 2;

FIGS. 4A and 4B are a rear view and a partial perspective view showing a connected state of an artificial tooth.

FIGS. 5A and 5B are cross-sectional views showing another example of an engaging portion.

FIGS. 6A and 6B are cross-sectional views illustrating a locking portion.

FIG. 7 is a sectional view schematically showing an artificial tooth set for molars.

FIGS. 8A and 8B are diagrams showing another example of a dentition supporter.

FIGS. 9A to 9C are diagrams showing a method for producing dentures using an artificial tooth set.

FIG. 10 is a front view showing dentures.

FIG. 11 is a schematic diagram showing an arrangement and an arrangement state.

FIG. 12 is a perspective view illustrating a conventional artificial tooth implantation method.

[Explanation of symbols]

 Reference Signs List 2 tooth receiving portion 3 array supporter 4 joining member 5 engaging portion 6 substrate 7 concave portion 9 concave groove 11 projection 12 locking portion 13 notch hole J arrangement state T artificial tooth Y area

Claims (7)

[Claims] 1. An artificial tooth for an artificial tooth, comprising: a plurality of artificial teeth for dentures; and an array supporter having a plurality of tooth receiving portions that can arrange and removably arrange the artificial teeth. In a region of the artificial tooth that is not visible from the outside, an engaging portion is provided in which a plurality of artificial teeth are integrated with the array supporter and a joining member that removably joins the artificial tooth in the array state is locked. And artificial tooth set. 2. The artificial tooth set according to claim 1, wherein said joining member is made of wax or synthetic resin and is detachable from said engaging portion. 3. The artificial tooth according to claim 1, wherein said array supporter comprises a synthetic resin or metal substrate, and said tooth receiving portion comprises a concave portion formed by molding the substrate. set. 4. The artificial tooth set according to claim 2, wherein the substrate is provided with a notch hole extending in the arrangement direction and facilitating removal of the artificial tooth. 5. The artificial tooth set according to claim 1, wherein the engaging portion is a concave groove or a protrusion extending in the arrangement direction. 6. The artificial tooth set according to claim 1, wherein the engaging portion has a retaining portion for retaining. 7. The array supporter is an anterior array supporter that forms an array for front teeth, a molar array supporter that forms an array for molars, or an array supporter for all teeth that forms an array for all teeth. The artificial tooth set according to any one of claims 1 to 5, characterized in that: