JP6373936B2 - Root implant - Google Patents

Description

  The present invention relates to a root implant that is stably connected to the alveolar bone after implantation.

The technique of implanting an implant widely used in the dental field into the alveolar bone is a treatment technique performed at a tooth defect position.
This technique performs restoration only on the tooth defect position, whereby the tooth defect position after treatment becomes natural as in the original tooth, and has a meshing acceptance force.
Cells that proliferate during alveolar bone healing can produce a fixation effect between the implant and the alveolar bone. However, since the implant surface is a smooth material, the microscopic movement caused by the external force during the implant healing process prevents the proliferated cells from adhering to the implant surface, resulting in loosening and greatly reducing the fixation effect. It will be.

New techniques have been developed to eliminate these disadvantages and enhance the fixation effect between the implant and the alveolar bone.
That is, a plurality of holes are formed on the implant surface by a multi-melting point sintering technique in which granules are added to the implant surface and sintered at a high temperature to melt the adhered granules.
As a result, the proliferated cells adhere to each hole, and the implant and the alveolar bone are firmly connected.

However, the following problems were discovered by actually using this technology.
Using multi-melting point sintering technology, it is possible to form holes on the implant surface to attach cells, but in the process of multi-melting point sintering, control the outer diameter and depth after forming each hole. I can't. Therefore, the size and depth of the holes after molding tend to be irregular, and the quality of each hole cannot be controlled.
In addition, since the inner surface of the hole formed by the multi-melting point sintering technique is smooth, the proliferated cells cannot smoothly adhere to each hole, and the implant and the alveolar bone cannot be firmly bonded.
Furthermore, since each granule cannot adhere to the implant in a regular form, the spacing between the pores after sintering does not match, and an effective distribution with consistent orientation in the process of cells attaching between the pores. In addition, the corrosive acid solution may remain in the pores after sintering, which adversely affects the integrated fixing effect.

  The problem to be solved by the present invention is to solve the above-mentioned problems, and by regularly attaching the proliferated cells, it is stably bonded to the alveolar bone, and is not easily loosened under the influence of external force, and is excellent An object of the present invention is to provide a root implant that has a stereotaxic effect.

  The root implant of the present invention is installed in an annular shape on the outer peripheral surface of the main body, a locating hole formed in the other end surface of the main body on the opposite side of the linking portion formed on one end of the main body, and the linking portion A plurality of first concave cavities are formed on the surface of the main body, and a connection section is formed between any two of the first concave cavities. A coarse screw yama near the joining portion, and a fine screw yama that is connected to the coarse screw yama, close to the position of the stereotaxic hole, is lower in height than the coarse screw yama and has a narrow pitch, and the coarse screw yama A plurality of second cavities are formed on the surface of each of the two, and a connecting section is formed between any two of the second cavities, and each of the first and second cavities has a high energy photothermal method. Molded on the surface of the main body and the coarse screw thread etc. Interval are evenly arranged in the rear root implant embedding, the cells grown at healing of alveolar bone adhering to said respective first, second 凹洞.

At least one first micropore may be further provided on the surface of each first concave cave.
At least one second micropore may be further provided on the surface of each second concave cave.
A plurality of third concave cavities are formed on the surface of the fine screw thread, and a connecting section may be provided between the two arbitrary third concave cavities.
In this case, at least one third micropore may be further provided on the surface of each third concave cave.

The root implant of the present invention is uniformly attached to the alveolar bone because the cells proliferated during the healing of the alveolar bone are evenly distributed and reliably attached to the alveolar bone. Can have a localized effect.
In addition, when screwing the root implant into the alveolar bone, the alveolar bone is first efficiently cut in a short time with the coarse screw yama, and then the fine screw yama enters according to the locus of the coarse screw yama. Since the coarse screw yama has a large area and contacts the alveolar bone, and the fine screw yama is not loosened by vibration, it is unlikely to be displaced or dropped before the root implant is completely established.

It is sectional drawing of the root implant which shows the 1st Example of this invention. It is sectional drawing in the use condition of the root implant which shows the 1st Example of this invention. It is sectional drawing of the root implant which shows the 2nd Example of this invention. It is sectional drawing of the root implant which shows the 3rd Example of this invention. It is sectional drawing of the root implant which shows 4th Example of this invention. It is sectional drawing of the root implant which shows 5th Example of this invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
1 and 2 show a first embodiment of the present invention.
As shown in FIG. 1, the root implant 1 of the first embodiment is opened on the other end surface of the main body 11 on the main body 11, the joining portion 12 formed at one end of the main body 11, and the opposite side of the joining portion 12. The stereotaxic hole 13 has a thread section 14 installed in an annular shape around the outer periphery of the main body 11.
The chain part 12 is the innermost part when embedded in the alveolar bone 2, and the stereotaxic hole 13 is a hole for attaching a tooth part.

A plurality of first concave cavities 111 are formed on the surface of the main body 11, and a connection section 112 is formed between any two first concave cavities 111.
Each first recess 111 is formed by being surrounded by a first bottom wall a1, a first peripheral wall a2 connected to the first bottom wall a1, and a first bottom wall a1 and the first peripheral wall a2. There is a chamber a3, and the first storage chamber a3 is open to the outside.
At the same time, each first cave 111 is processed and molded by a high-energy photothermal method in which excavation is performed using a high-energy beam such as a laser, and each first cave 111 has a regular shape and is equally spaced. They are evenly arranged on the surface of the main body 11.
Furthermore, each 1st bottom wall a1 and 1st surrounding wall a2 make the surrounding surface of the main body 11 a rough surface.

The thread section 14 is composed of a coarse screw thread 141 close to the coupling portion 12 and a fine screw thread 142 connected to the coarse thread thread 141 and close to the stereotaxic hole 13. The height of the fine screw thread 142 is lower than that of the coarse thread thread 141, and the pitch of the fine thread thread 142 is also narrower than the pitch of the coarse thread thread 141.
As a result, two types of screw threads with different heights and pitches are installed on the outer peripheral surface of the main body 11, and when embedding the root implant 1 in the alveolar bone 2 (not shown) of the oral cavity, first, the coarse screw thread 141 is used. Reaming and embedding efficiently and stably in a short time, and then screwing along the locus of the coarse screw thread 141 by the fine thread threader 142.

In this way, the root implant 1 is firmly positioned in the alveolar bone 2, and in the present embodiment, a plurality of second concave cavities 1411 are formed on the surface of the coarse screw thread 141.
In addition, a connecting section 1412 is installed between any two second concave cavities 1411.
Each second concave cave 1411 has a second bottom wall b1, a second peripheral wall b2 connected to the second bottom wall b1, and a second storage chamber b3 formed from the periphery of the second bottom wall b1 and the second peripheral wall b2. .
The second storage chamber b3 communicates with the outside, and at the same time, each second concave cave 1411 is processed and molded by the high energy photothermal method described above.
Thereby, each second concave cave 1411 has a homogenous form on the coarse screw thread 141, and is evenly arranged at equal intervals, and each of the second bottom wall b1 and the second peripheral wall b2 has a rough surface. It has a form that it has.

As shown in FIG. 2, when performing an implant operation, the coupling portion 12 is localized in an embedded hole (not shown) previously opened on the alveolar bone 2.
A surgical instrument (not shown) is operated to the stereotaxic hole 13, and the wall surface of the embedding hole is cut in conjunction with the coarse screw thread 141 close to the joining portion 12.
Thereby, the coarse screw thread 141 and the wall surface of the embedding hole exhibit a large area contact.
In this way, the screw thread is inserted into the embedding hole, and then the fine screw yamar 142 continues the cutting screw insertion operation according to the locus of the coarse thread yamar 141 and exhibits close small area contact with the wall surface of the embedding hole.
This utilizes a design in which the thread section 14 has coarse, fine screw threads 141, 142 during the implant surgery process, and the root implant 1 is quickly screwed into the alveolar bone 2 and the patient experiences discomfort during the surgical process. Can be reduced.
In addition, the initial embedding localization effect is achieved.

Next, in the process of completing the implant operation and waiting for the healing of the alveolar bone 2, each of the first and second storage chambers a3 and b3 has a space in which proliferating cells derived from the healing of the alveolar bone 2 are extended and stored. Can be provided.
Moreover, since the surfaces of the first and second bottom walls a1 and b1 and the first and second peripheral walls a2 and b2 are uneven and not smooth, the proliferating cells adhere closely.
At this time, by further utilizing the corresponding installation of each connection section 112 and the connection section 1412, when cells are derived between the first and second concave cavities 111 and 1411, the cells first attached to the connection sections 112 and the connection section 1412. Thereafter, each of the connecting sections 112 and the connecting section 1412 is extended to the positions of the first and second concave cavities 111 and 1411 on the side.

The proliferating cells that have entered the first and second concave cavities 111 and 1411 are connected to each connecting section 112 via the proliferating cells attached to the connecting section 1412, and are attracted to each other.
Since the first and second concave cavities 111 and 1411 are regularly arranged at equal distances, the proliferating cells are uniformly distributed, and the root implant 1 is firmly positioned in the alveolar bone 2.
Furthermore, even if the root implant 1 moves due to an improper external force in the process of implant fusion, loosening of the root implant 1 may occur due to close adhesion and traction between the proliferating cells and the proliferating cells and the alveolar bone. There is no.
In this way, not only the firm coupling action between the root implant 1 and the alveolar bone 2 can be greatly improved, but also the localization effect of the root implant 1 can be effectively enhanced.

FIG. 3 shows a second embodiment of the present invention. In the second embodiment, the description of the same structure as in the first embodiment is omitted.
In the second embodiment, a plurality of third concave cavities 1421 are formed on each fine screw thread 142.
In addition, a connecting section 1422 is installed between any two third recessed caverns 1421.
Each third concave cavity 1421 has a third bottom wall c1, a third peripheral wall c2 connected to the third bottom wall c1, and a third storage chamber c3 formed from the third bottom wall c1 and the periphery of the third peripheral wall c2.
Moreover, the third storage chamber c3 communicates with the outside.
At the same time, the third concave cavities 1421 are processed and molded by the above-described high energy photothermal method, whereby the third concave cavities 1421 are evenly arranged at equal intervals on the fine screw yama, and each third bottom The wall c1 and the third peripheral wall c2 have a rough surface form.

In addition, the first, second, and third concave cavities 111, 1411, and 1421 are installed on the main body 11, the coarse screw yama 141, and the fine screw yama 142, respectively.
Thereby, after implantation, the root implant 1 is stably coupled to the inside of the alveolar bone 2 (not shown) through the first, second, and third concave cavities 111, 1411, and 1421 by different close forces.
In addition, each connecting section 112, connecting section 1412, and connecting section 1422 can provide a better adhesion to proliferating cells, and can avoid the occurrence of a situation where loosening occurs under the influence of external force.
Thereby, the root implant 1 achieves a better localization effect.

FIG. 4 shows a third embodiment of the present invention. In the third embodiment, the description of the same structure as in the second embodiment is omitted.
In the third embodiment, at least one first, second and third micro holes a4, b4 and c4 are provided on the surfaces of the first, second and third bottom walls a1, b1 and c1.

  In the fourth embodiment shown in FIG. 5, the first, second and third micro holes a4, b4 and c4 are formed on the surfaces of the first, second and third peripheral walls a2, b2 and c2. .

  In the fifth embodiment shown in FIG. 6, at least one of the first, second and third bottom walls a1, b1, c1 and the surfaces of the first, second and third peripheral walls a2, b2, c2 First, second and third micro holes a4, b4 and c4 are provided.

In order to cope with different treatment methods, the first, second and third micropores a4, b4 and c4 are processed and molded by the high energy photothermal method described above.
When the root implant 1 is embedded in the alveolar bone 2 (not shown), the proliferating cells derived at the time of healing of the alveolar bone 2 only enter deeply into the first, second and third concave cavities 111, 1411, 1421. Or it can extend | stretch in each 1st, 2nd and 3rd micropores a4, b4, c4, and can improve the firmness of the coupling | bonding of the root implant 1 and the alveolar bone 2 significantly.
In this way, the root implant 1 and the alveolar bone 2 achieve a tighter and more stable connection due to the invasion and extension of proliferating cells, and are less likely to loosen due to the influence of external force action, and the localization effect of the root implant 1 is effective. Can be improved.

In summary, the root implant of the present invention uses a high-energy photothermal method, and the first and second concave cavities are regularly and regularly arranged on the main body of the root implant and the coarse screw thread of the thread section. Is installed.
Thus, when the root implant is embedded in the alveolar bone, the proliferated cells enter the first and second accommodation chambers of the first and second concave cavities, and are additionally written on the cells.
In addition, since the connecting section and the connecting section formed between any two of the first concave caverns and any two of the second concave caverns, the proliferating cells are attached to the connecting section and the connecting section. Uniformly distributed and adheres to each of the first and second cave.
As a result, the root implant is firmly connected to the alveolar bone, and there is no risk of loosening under the influence of external force, and the solid bonding effect between the root implant and the alveolar bone can be effectively promoted, and the orientation after implanting the root implant The effect can be greatly enhanced.

 The embodiments of the present invention described above do not limit the present invention, and the scope protected by the present invention is based on the claims.

DESCRIPTION OF SYMBOLS 1 Root implant 11 Main body 12 Linking part 13 Stereotaxic hole 14 Thread section 111 1st concave cave 112 Connection section 141 Coarse thread yama 142 Fine thread yama 1411 2nd concave cave 1412 Connection section 1421 3rd concave cave 1422 Connection section a1 1st bottom Wall a2 First peripheral wall a3 First storage chamber a4 First micro hole b1 Second bottom wall b2 Second peripheral wall b3 Second storage chamber b4 Second micro hole c1 Third bottom wall c2 Third peripheral wall c3 Third storage chamber c4 3rd micropore 2 alveolar bone

Claims (5)

A root implant, a concatenated portion formed at one end of the main body, a stereotactic hole opened in the other end surface of the main body on the opposite side of the concatenating portion, and a thread installed in an annular shape on the outer peripheral surface of the main body Has a section,
On the outer peripheral surface of the main body, a plurality of first concave cavities are dug and arranged at equal intervals, and a connection section is formed between any two adjacent first concave cavities. ,
The thread section includes a coarse screw yama extending from the coupling portion, and a fine screw yama extending from the coarse screw yama toward the stereotaxic hole and having a lower height and a narrower pitch than the coarse screw yama, A plurality of second concave cavities are evenly arranged at equal intervals on the surface of the coarse screw thread, and a connecting section is formed between the two adjacent second concave cavities. After implanting the root implant, cells grown during healing of the alveolar bone adhere to the first and second concave cavities.   The root implant according to claim 1, wherein at least one first micropore is further provided on a surface of each first concave cave.   The root implant according to claim 1, wherein at least one second micropore is further provided on a surface of each second concave cave.   The tooth root according to claim 1, wherein a plurality of third concave cavities are formed on a surface of the fine screw thread, and a connecting section is installed between the two arbitrary third concave cavities. Implant.   The root implant according to claim 4, wherein at least one third micropore is further installed on a surface of each third concave cave.

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