KR20090043364A - The surgical operation reamer for dental implant - Google Patents

Abstract

The present invention relates to a reamer for implant surgery.

Implant reamers of the present invention, the cylindrical body 61 and; A coupling shaft 62 extending downward from the center of the bottom surface of the body 61; Protruding along the upper edge of the body 61 is a structure consisting of one or more perforations (63) serving as a cutting edge.

When using the implant reamer of the present invention to drill holes in the upper molar bone and then create and foster bones in the maxillary sinus, the alveolar bone due to the reamer is laminated on the upper surface of the reamer without removing the upper part of the upper molar bone. The damage of the membrane is prevented or minimized, and since the upper part of the upper molar alveolar bone can be easily pushed up to the maxillary sinus side with the alveolar periosteum, there is an advantage of shortening the bone generation time.

Implant, Reamer, Alveolar bone, Maxillary sinus

Description

The surgical operation reamer for dental implant

The present invention relates to a reamer for implant surgery, and more specifically, after the alveolar bone where the upper molars are located, the alveolar periosteum, which is the boundary membrane of the maxillary sinus and the alveolar bone, is pushed to the maxillary sinus side and the maxillary sinus is surrounded by the alveolar periosteum moved to the maxillary sinus side. In the upper molars implant method that creates and nurtures bones in the alveolar bone holes, the upper part can be pushed up with the alveolar periosteum to the maxillary sinus without removing all the alveolar bones where the perforated upper molar is located. In addition, the alveolar periosteum on the surface of the maxillary sinus bone is not damaged, and the upper portion of the alveolar bone that is pushed up to the maxillary sinus side allows the bone formation and development to occur more rapidly, while allowing the denser bone to be grown. It is about.

Unlike childishness, permanent teeth are not replaced, so permanent care should be taken from their childhood, but they often lose their permanent teeth due to accidents.

However, if there is no permanent teeth other than jichi, which is also called wisdom teeth and hardly feels uncomfortable, it is very inconvenient to eat food, and may not be accurate in pronunciation, but also has a significant weakness in aesthetics. Since they have artificial teeth rather than living without permanent teeth, the cases of artificial teeth implantation have recently been examined.

Implant treatment is to remove the permanent tooth from the alveolar bone completely when the permanent tooth is irreparably damaged, and then implant the artificial root inside the alveolar bone to protrude to the outside, and cover the external surface of the artificial root exposed to the outside by fixing the artificial crown in the shape of a permanent tooth. As a dental procedure to serve as a permanent tooth, the crown serves as a tooth, and the artificial root is an implant.

The implant should be integrated with the alveolar bone without interfering with bone regeneration, and do not cause biorejection and at the same time the alveolar bone and gums should be well attached, made of titanium or titanium alloy known to be harmless to the living body. The losing implant is composed of a fixture that is completely inserted and fixed inside the alveolar bone, and an abutment exposed to the outside through the upper end of the gum in a state where the lower end is fixedly coupled to the fixture.

Looking at how the implant as described above, as shown in Figure 1, first, the alveolar bone 12 surrounded by the gum 11 is dug up to form a hole called a bone cavity 13, the bone cavity Insert the fixture (14) which can be bone-bonded with the alveolar bone (13).

Then, as time elapses, the new alveolar bone is formed and adhered to the outer surface of the fixture inserted into the alveolar bone so that the fixture can be firmly fixed inside the alveolar bone.

Then, the lower part of the abutment 15 is fixedly coupled to the abutment 15 connection part of the fixture 14 fixed inside the alveolar bone, and then an artificial crown ( 16) will be combined.

As described above, since the implant is firmly fixed to the alveolar bone and can be used for more than 20 years, the frequency of the procedure is increasing in recent years. In the case of the implant procedure replacing the upper molar, there are the following problems.

Of the alveolar bone 20, the upper molar is located (20 ', hereinafter referred to as "the upper molar alveolar bone") and the side of the nose bone 21, as shown in Figure 2, referred to as "the maxillary sinus (S)" Since there is a space between the bones, the upper molars (20 ') of the thickness is not enough, it is often difficult to implant the upper molars.

Therefore, the bone is implanted after artificially implanting a bone in a part of the maxillary sinus, which is in contact with the upper molars, and the implant is performed. The method of growing the bone in the maxillary sinus, as shown in FIG. 3, is the side of the face up to the maxillary sinus (S). After opening the bone, the surface of the maxillary sinus alveolar alveolar bone 20 'and the alveolar periosteum 22 attached to it are lifted to the maxillary sinus side.

And, bone filling material (B), such as autologous bone or artificial bone pieces removed from the operator's bone is filled in the maxillary sinus (S ') between the alveolar periosteum 22 and the alveolar bone 20, and then from the alveolar bone to the bone growth material (B) By allowing the bone to be generated and nurtured to the side, it is possible to stably fix the implant fixture 14 serving as the root tooth to the upper molar bone 20 '.

However, the method as described above is not only undesirable in appearance because of a lot of swelling of the face side, there is a disadvantage that it leads to inconvenience in daily life until swelling.

Therefore, in recent years, rather than the above method, as shown in Figure 4, the alveolar periosteum 22 that was attached to the surface of the alveolar bone 20 after completely drilling the upper molar alveolar bone with a reamer so as not to damage the alveolar periosteum 22. In the state of pushing the maxillary sinus to the maxillary sinus, the method of implanting the implant by growing bones in the maxillary sinus (S ') and the upper molars alveolar bone (H') between the alveolar periosteum 22 and the alveolar bone 20 may be used.

Reamer 51 used to drill the hole (H) in the upper molar bone as described above, as shown in Figure 5, the outer peripheral surface of the upper end is inclined "V" shaped discharge groove for discharging the chipped bone ( G) is a cylindrical body (51A) formed along the axial direction on one side of the outer peripheral surface; A coupling shaft 51B extending downward from the bottom center of the body 51A; It consists of a structure.

In addition, the coupling shaft 51A is coupled to the upper end of one side of the bar-shaped handle 52, while the upper surface of the reamer 51 is in contact with the surface of the alveolar bone, while pushing the handle 52 to the alveolar bone side by turning the hole in the alveolar bone. In this case, the edge (E) formed on the upper surface and the outer peripheral surface of the reamer body (51A) serves as a cutting blade for cutting the bone of the alveolar bone.

Particularly, in the case of two upper edges ( _{U U} ) (E _U ') of the upper surface of the body formed while meeting the top of the discharge groove G, one edge E _U is horizontal but the other edge E _U ' is facing outward. The upper surface of the body connecting the two edges while inclined downward also forms an inclined surface, and the horizontal edge E _U , which is the highest portion of the upper surface of the body, serves as a cutting edge.

Therefore, the diameter of the hole drilled in the upper molar bone is approximately equal to the outer diameter of the reamer, and the upper molar bone bone cut by the upper edge and the inclined upper edge of the reamer is discharged through the discharge groove G, the upper molar bone When all of the holes are formed, the upper surface of the reamer 51 is in contact with the alveolar periosteum and the alveolar periosteum is easily damaged. Therefore, it is very difficult to prevent the alveolar periosteum from being damaged by the reamer.

In addition, the above two methods of expanding and nurturing the upper molar alveolar bone to the maxillary sinus side to be suitable for implantation, the bone growth material is filled in the maxillary sinus surrounded by the alveolar periosteum and alveolar bone pushed up to the maxillary sinus side, and from the alveolar bone to the bone growth material side As the bone grows, the upper molar alveolar bone, in which the hole is formed, is expanded and grown to a thickness sufficient for the implant procedure.

In the state where the bone-forming material is filled in the maxillary sinus, which is an empty space, when bone is generated and grown from the alveolar bone, the bone is longer developed from the alveolar bone to the central end of the maxillary sinus-filled bone-filling material (S _E ′ in FIG. 4). As the distance between the central end of the maxillary sinus and the alveolar bone increases, the density of the grown bone, that is, the rigidity, is inferior.

The present invention has been devised to solve the problems of the conventional implant treatment method of extending and nurturing the upper molars to the part of the maxillary sinus facing the upper molars when the thickness of the upper molars is not sufficient.

Another object of the present invention is to provide a reamer for implant surgery that can prevent damage to the alveolar periosteum or minimize damage when punctures the upper molar alveolar bone.

In addition, it is possible to easily push the upper part of the upper molar alveolar bone together with the alveolar periosteum to the maxillary sinus without leaving the upper part of the upper molar alveolar bone, as well as without damaging the maxillary alveolar periosteum between the maxillary alveolar bone and the maxillary alveolar alveolar bone. It is another object of the present invention to provide a reamer for implant procedures that can be easily inserted.

The above object of the present invention is achieved by a plurality of perforation protrusions protruding along the upper edge of the cylindrical reamer.

When using the reamer of the implant procedure of the present invention to make a hole in the upper molar bone, the upper part of the upper molar bone is laminated on the upper surface of the reamer body, so that the upper periphery of the upper surface of the reamer body and the upper molar bone contact with the alveolar periosteum. This prevents or minimizes damage to the alveolar periosteum.

In addition, the upper molars of the upper molars that are not removed when a hole is drilled in the upper molars can be easily pushed into the maxillary sinus along with the alveolar perioste to shorten the time for bone formation and growth in the maxillary sinus. Of course, there is an advantage that the density of the grown bone is improved.

The implant reamer of the present invention is particularly suitable for the implant treatment for upper molars, which are the molars below the maxillary sinus, and the structure prevents the upper portion of the upper molars from being removed when a hole is drilled in the upper molars bone, which is the alveolar bone in which the molars were planted. Has its features.

In other words, when using the reamer for implant treatment of the present invention to make a hole in the upper molars bone, all the alveolar bone in the hole is not removed by bone flour or bone fragments, the upper portion of the upper molars bone as the original shape of the upper surface of the reamer It will be in the state laminated | stacked on.

The reamer of the present invention as described above, the cylindrical body; A coupling shaft extending downward from the bottom center of the body; A plurality of perforation protrusions protruding along the upper edge of the body; It is made of a back.

Reamer of the present invention as described above, the upper end of the upper molar jaw bone is laminated state on the upper surface of the body, the height of the upper end of the upper molar bone is laminated on the upper body is in the same state as the height of the perforation projections.

Therefore, the alveolar periosteum on the upper maxillary alveolar bone surface is in contact with not only the cutting edge of the reamer but also the upper end of the upper molar bone, so that the alveolar periosteum is prevented from being damaged by the cutting edge. The upper molar alveolar bone and the alveolar periosteum placed on the upper surface of the upper jaw are pushed toward the maxillary sinus.

Details of the effects and the resulting effects, including the object and technical configuration of the present invention will be clearly understood by the following description with reference to the drawings showing a preferred embodiment of the present invention.

Figure 6 shows a perspective view of a reamer for implantation of one embodiment of the present invention.

As shown in the implant treatment reamer 60 of the present invention,

A cylindrical body 61;

A coupling shaft 62 extending downward from the center of the bottom surface of the body 61 and having a diameter smaller than that of the body 61;

At least one drilling protrusion 63 protruding on the same circumference along the upper edge of the body 61 and serving as a cutting edge; And the like.

At this time, the diameter of the reamer body 61 is made in the range of 2.0 to 8mm, the height of the perforation projections of about 0.1 to 2.0mm, the reamer 60 is the lower end of the coupling shaft 62, the upper end of the bar-shaped handle 52 Used in conjunction with.

And, there is no particular limitation on the shape of the perforation projections 63, and only the pointed portion or the angled corners at the upper end so as to cut the bone.

When the reamer is configured as described above, the reamer of the present invention can be used as a conventional reamer during the second puncture procedure after performing the first puncture on the upper molars.

For example, suppose that the thickness of the edge of the upper molars of the bone to be drilled is 10 mm and the height of the perforated protrusion protruding from the upper surface of the reamer is 1 mm, as shown in FIG. 7, the upper molars of the upper bone 20 'as a conventional reamer. After drilling the primary hole (H1) to the height of 9mm from the bottom of the drill, the remaining edge portion 1mm as a reamer of the present invention, the upper molar bone (20 ') having an edge thickness of 1mm on the upper surface of the reamer surrounded by the perforation protrusion The upper end portion 20'A of the is laminated | stacked.

At this time, the perforation projection of the reamer of the present invention, the edge of the upper edge of the upper molars of the bone 1mm thickness is cut only, the bone fragments cut by the perforation projections should not be accumulated on the upper surface of the reamer, the upper end of the molar bone is completely on the upper surface of the reamer As it can be stacked, as shown in Figure 8, it is preferable to have a filling groove (G ') that can be filled with bone fragments on the upper surface of the reamer.

And, it is preferable to incline the bottom surface so that the bone fragments falling into the filling groove (G ') is sequentially filled from one side of the filling groove (G').

Using only the reamer of the present invention having the structure as described above, because it is impossible to make a complete hole in the upper molar bone, it is necessary to carry out the drilling work in the secondary with a conventional reamer.

However, only the reamer of the present invention may be provided with a corner cutting edge like a conventional reamer on the upper surface of the reamer, which is surrounded by a perforation protrusion so as to completely open the upper molars.

That is, as shown in Figure 9, by having a discharge groove (G) which is open from the center of the body to the outer peripheral surface side from the upper end to the lower end of the body 61 between the two perforating projections 63, the discharge groove (G) and Two corners (E1) and (E2) are formed on the upper surface of the meeting body, and the cut pieces of bone can be discharged through the discharge groove (G) while the edges serve as cutting edges.

In this case, an additional filling groove G ′ may or may not be provided on the upper surface of the reamer.

And, as described above when the corner (E1) (E2) where the discharge groove (G) and the upper surface of the body 61 meets the role of cutting edge, in order to enable the edge to serve as an efficient cutting edge, two edges One side (E1) of (E1) (E2) horizontally inclined the other edge (E2) to the outside while at the same time the upper surface of the body extending from one edge (E1) to the other edge (E2) so as to form an inclined surface By doing so, it is preferable to make the one side edge (E1) the highest on the upper surface of the body.

That is, it is preferable that the heights of the two edges E1 are not equal by giving an inclination to the upper surface of the body 61 or providing a stepped portion.

However, if necessary, the heights of the two edges E1 and E2 may be the same. In this case, the drilling efficiency may be slightly lowered, but the precision of the drilling depth may be increased.

After the reamer 60 of the present invention is coupled to the handle 52 and the handle 52 is rotated, the perforated protrusion 63 protruding on the upper surface of the reamer body 61 rotates along the circumferential direction to the alveolar bone. The hole is drilled, the edge (E3) of the side (F ') of the drilling projection (63) which is approximately perpendicular to the circumferential direction and the upper surface (F) of the drilling projection (63) serves as a cutting edge for grinding the bone of the alveolar bone. Will be

At this time, the upper surface of the punching projection 63 having the edge (E3) may serve as a cutting surface, but in order to further improve the cutting efficiency of the punching edge (E3), the edge (E3) diameter It may be formed to be inclined or bent in the middle without being formed in a horizontal straight line along the direction.

That is, as shown in FIG. 10, the entire upper surface F of the perforation protrusion 63 is formed into an inclined surface, or the inner surface of the body 61 at the inner edge of the flat outer surface F _O and the outer surface F _O. In terms of efficiency, it is preferable to be divided into the inner upper surface F _{I which} slopes downward toward the center side.

1 is a schematic diagram showing a state in which the implant is performed.

Figure 2 is a partial structural diagram of the maxillary sinus and alveolar bone.

Figure 3 shows the implant treatment method for upper molar teeth,

  (A) is a schematic diagram showing a state in which a hole is drilled from the face side to the maxillary sinus in order to create and nurture bone in the maxillary sinus.

  (B) is a schematic diagram showing the state of fixing the upper molar implant.

Figure 4 is a schematic diagram showing a hole in the maxillary sinus in the alveolar bone where the upper molars were located to generate and nurture bone in the maxillary sinus.

Figure 5 shows a conventional reamer for drilling holes in the alveolar bone,

  (A) is a perspective view.

  (B) is front view.

6 is a perspective view of a reamer of the first embodiment of the present invention;

Figure 7 shows a method for generating and nurturing bones after punching the upper molar bone in the maxillary sinus bone as the present invention reamer for the upper molar implant procedure,

  (A) is a schematic diagram showing a state in which the primary hole of the upper end is formed,

  (B) is a schematic diagram showing the state in which the reamer is inserted into the primary hole,

  (C) is a schematic diagram showing the state just before the first hole is completely drilled,

  (D) is a schematic diagram showing the state in which the upper molars of the upper molars after being completely formed in the state of being pushed up to the maxilla in the state of being laminated on the upper surface of the reamer of the present invention.

8 shows a second embodiment reamer of the present invention.

  (A) is a perspective view,

  (B) is a top view.

9 is a perspective view of a reamer of the third embodiment of the present invention;

10 shows the present invention reamer,

  (A) is a partial perspective view of a reamer of the fourth embodiment,

  (B) is a partial perspective view of a reamer of the fifth embodiment.

           ((Explanation of symbols for main part of drawing))

     20 '. Upper molar tooth bone 52.Handle 60.Reamer

     61. Body 62. Coupling shaft 63. Drilling protrusion

     E1, E2, E3. Edge F. Top F '. side

F _O. If trauma F _I. Inner View G. Discharge Groove

     G '. Filling Home

Claims (8)

In the reamer for implant surgery to make a hole in the alveolar bone, A cylindrical body 61; A coupling shaft 62 extending downward from the center of the bottom surface of the body 61; One or more perforation protrusions 63 protruding along the upper edge of the body 61; Reamer for implant surgery, characterized in that comprising a. The implanter reamer of claim 1, wherein the upper end of the perforation protrusion (63) is provided with one of a pointed portion and an angled edge. 2. The reamer for implant treatment according to claim 1, wherein the upper surface F of the perforated protrusion 63 is one of a flat surface and an inclined surface. The upper surface F of the perforated protrusion 63 extends inclined downward toward the central portion of the body 61 at a flat outer surface F _O and an inner edge of the outer surface F _O. Reamer for implant treatment, characterized in that consisting of the inner upper surface (F _I ). The implant reamer of claim 1, wherein at least one filling groove (G ') through which the bone fragments cut by the drilling protrusion (63) is formed is formed on the upper surface of the body (61). The implanter reamer of claim 1, wherein a discharge groove G is formed on an outer circumferential surface of the body 61 from an upper end portion to a lower end portion. 7. The reamer of claim 6, wherein a pair of edges E1 and E2 are formed on an upper surface of the body 61 that meets the discharge groove G. 8. The reamer of claim 7, wherein one of the pair of edges (E1) and (E2) has a higher position than the other edge (E2).

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