JP2012034831A - Implant material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an implant material easily mounted to a human body, and having excellent stability such as non-wobbling when mounting a denture.SOLUTION: The implant material includes an anchor part and a body part, and the anchor part has a rotation prevention function. In the implant material, the anchor part includes one or more anchor part elements, and at least one of the anchor part elements is provided such that the at least the one is positioned in a position eccentric to the axis of the body part.

Description

  The present invention relates to an implant material that can be used for an artificial tooth root used in implant treatment in the dental field.

  When a tooth is lost due to caries, periodontal disease, or the like, a denture is attached to the part where the tooth has been lost by using an artificial tooth root so that the tooth is not easily removed. As such an artificial tooth root, an artificial tooth root having a cylindrical embedded portion is usually used. When an artificial tooth root is embedded, a hole is drilled in a hard bone cortex and the embedded portion is embedded in a relatively soft cancellous bone. However, loosening tends to occur over time. When this looseness occurs, the stability becomes insufficient, such as wobbling of the denture, not only causing a problem of meshing, but also allowing bacteria to enter through the gap.

  As a means for preventing such loosening, it is conceivable to provide a male screw part in the embedded part and to form a screw groove in the bone cortex part with a screw groove forming jig and screw it in. Therefore, it is necessary to form a screw groove precisely, which is difficult in reality. In addition, as an artificial tooth root for preventing such loosening, it has been proposed to stabilize the artificial tooth root by using a screw-shaped fixing auxiliary means (Patent Document 1).

JP2009-233179A

  However, the artificial tooth root having the above-mentioned fixing auxiliary means is stable with respect to wobbling and the like because the fixing auxiliary means is screwed into the artificial tooth root body having a screw hole and the artificial tooth root body through the screw hole. However, the fixing auxiliary means is difficult to install, and becomes a burden on the human body. An object of the present invention is to provide an implant material that is easy to attach to a human body and has excellent stability such that it does not wobble when a denture is attached.

  The present invention is an implant material that includes an anchor portion and a main body portion, and the anchor portion has an anti-rotation function. Moreover, this invention is also an implant material which has the metal net shape comprised by the titanium fiber in the said anchor part and / or the said main-body part.

  By using the implant material as an artificial tooth root, the anchor portion has an anti-rotation function. Therefore, when the anchor portion is embedded, the embedded portion exhibits the anti-rotation function. Increase. Therefore, even if an upper structure is provided via an abutment, it can receive the force received from other teeth during meshing, and it becomes an implant material with excellent stability by preventing wobble, The influence on the human body due to the meshing can be reduced.

  In addition, the present invention is also an implant material having a metal network formed of titanium fibers in the anchor part and / or the main body part. In addition to the anti-rotation function, the metal mesh can be fixed to the jawbone at an early stage, and stability such as prevention of wobbling can be improved by a simple attachment technique. The influence on the human body due to can be further eliminated.

1 is a perspective view of a first embodiment example of an implant material of the present invention. FIG. (A) It is the schematic diagram of the state which removed a part of bone cortex part from the implant material of FIG. 1, and was attached to the jawbone. (B) It is the schematic diagram of the state which removed the bone cortex part and attached to the jawbone of the implant material of FIG. (A) It is an assembly drawing which attaches a superstructure to the implant material of FIG. (B) It is an assembly drawing of the abutment and superstructure to which the implant material of FIG. 1 and the implant material are attached. (A) It is a perspective view of the 2nd embodiment of the implant material of this invention. (B) It is a bottom view of the implant material of Fig.4 (a). (A) It is a perspective view of the 3rd example of an embodiment of the implant material of this invention. (B) It is a bottom view of the implant material of Fig.5 (a). (C) It is the modification of the implant material of Fig.5 (a). (A) It is a perspective view of the example of the 4th embodiment of the implant material of this invention. (B) It is a bottom view of the implant material of Fig.6 (a). (A) It is a perspective view of the 5th example of an embodiment of the implant material of this invention. (B) It is a bottom view of the implant material of Fig.7 (a). (C) It is a modification of the implant material of Fig.7 (a). (A) It is a perspective view of the 6th embodiment example of the implant material of this invention. (B) It is a bottom view of the implant material of Fig.8 (a). (A) It is a perspective view of the 7th embodiment example of the implant material of this invention. (B) It is a bottom view of the implant material of Fig.9 (a). (A) It is a perspective view of the example of the 8th embodiment of the implant material of this invention. (B) It is a bottom view of the implant material of Fig.10 (a). (A) It is a perspective view of the 9th embodiment example of the implant material of this invention. (B) It is a bottom view of the implant material of Fig.11 (a). (A) It is a perspective view of the tenth embodiment example of the implant material of the present invention. (B) It is typical sectional drawing explaining the state which embed | buried the implant material of Fig.12 (a) in the jawbone. It is explanatory drawing of the attachment position of the metal net body with respect to the implant material of this invention. (A) It is a perspective view of the example of 11th embodiment of the implant material of this invention. (B) It is a bottom view of the implant material of Fig.14 (a).

  Hereinafter, although this invention is demonstrated using drawing, this invention is not limited to these. As shown in FIG. 1, the implant material 1 includes a main body portion 2 and an anchor portion 3. The anchor part 3 includes two anchor part elements 4 and 4 ′, and includes a connecting part 5 that connects the anchor part element 4 and the main body part 2, and a connecting part 5 ′ that connects the anchor part element 4 ′ and the main body part 2. I have. At the time of embedding, the implant material 1 is made by press-fitting at least a cylindrical anchor portion element 4 into the cancellous bone portion. At this time, in the implant material 1, the anchor part element and the cancellous bone part are engaged in the direction perpendicular to the press-fitting direction. In addition, in order to attach the implant material 1 to the jaw bone, it is possible to attach it by a normal method. For example, as shown in FIG. 2A, a part of the bone cortex of the jaw bone is excised with a drill or the like. After drilling a hole for anchor portion insertion in the cancellous bone portion with a drill or the like, the anchor portion can be embedded in the cancellous bone portion.

  As shown in FIG. 3A, the implant material 1 embedded in the jawbone may have the upper structure 8 attached to the main body 2 of the implant material 1 as shown in FIG. As shown, the abutment 7 may be mounted, and the abutment 7 may be further mounted with an upper structure 8. The connection between the main body 2 and the abutment 7 is not particularly limited as long as the abutment 7 is securely fixed to the main body 2 of the implant material 1 which is an artificial tooth root. For example, FIG. You may connect the main-body part 2 firmly to the hole provided in the lower end of the upper structure of a). It is also possible to provide a hole at the lower end of the abutment 7 in FIG. 3 (b) so that the hole and the main body 2 are fitted and firmly fixed. In FIG. 2B, the bone cortex is excised and the cancellous bone and the anchor are engaged. In FIG. 2A, a part of the bone cortex is excised and the anchor is embedded. Therefore, since the bone cortex part and the anchor part which are harder than the cancellous bone part are engaged, the implant material 1 is fixed more firmly. At this time, the axis X of the implant material 1 coincides with the axis Y of the main body 2 and is parallel to the axes Z and Z ′ of the anchor elements 4 and 4 ′, but the anchor elements 4 and 4 ′. Are not located coaxially with the axis Y of the main body 2, and the axes Z and Z 'of the anchor elements 4, 4' are eccentric with respect to the axis Y of the main body 2. The anchor portion 3 is provided so as to be in the position. Therefore, when an external force is applied to the implant material 1 so as to rotate about the axis Y of the main body 2, the anchor elements 4, 4 ′ become the axes Z, Z ′ of the anchor elements 4, 4 ′. The force acts so that the anchor part elements 4, 4 ′ perform a circumferential movement around the axis Y of the main body 2. However, since the anchor part elements 4, 4 ′ and the cancellous bone part are engaged, the circumferential movement cannot be performed. Therefore, when the anchor part elements 4, 4 ′ are provided at a position deviated from the axis Y of the main body part 2, the anchor part 3 has a rotation preventing function, so that the implant material 1 performs a rotational movement. Since it cannot be performed, it does not cause wobble and has high stability. In addition, since the anchor part elements 4 and 4 ′ have an axis parallel to the axis X of the implant material 1, it is easy to press into the cancellous bone part by pressing the implant material 1. In the implant material 1, the anchor elements 4 and 4 ′ are arranged symmetrically about the axis Y of the main body, so that when an external force is applied to the main body, the external force is distributed to the plurality of anchor elements. Therefore, it can be stably fixed to the jawbone as an artificial tooth root. 2A, the main body 2 of the implant material 1 protrudes from the bone cortex from the boundary with the anchor 3, and in FIG. 2B, a part of the upper side of the main body 2 of the implant material 1 is projected. Protrudes from the bone cortex. Therefore, the main body 2 can be covered with a cap or the like until the implant material 1 is fixed to the jawbone. In the embodiment of FIG. 2B, the gingiva etc. Can also be prevented from entering.

  4 to 12 are views showing other embodiments of the implant material of the present invention. As shown in FIG. 4, the implant material 11 as the second embodiment example includes an anchor portion 13 at the lower portion of the main body portion 12. The anchor portion 13 is branched from the portion of the main body portion 12, and includes three cylindrical anchor portion elements 14, 14 ', 14' 'via a connecting portion. As in the case of the first embodiment, the anchor part elements 14, 14 ', 14' 'are provided at positions eccentric with respect to the axis of the main body part 12, so that the anchor part 13 functions to prevent rotation. Therefore, the implant material 10 cannot rotate, and therefore does not wobble and has high stability. In addition, since the anchor portion is constituted by a plurality of anchor portion elements, even when an external force is applied to the implant material 11, since the external force is received by the plurality of anchor portion elements, the stability against the external force is high. .

  In FIG. 5, an implant material 21 according to a third embodiment example has two anchor part elements 24, 24 ′ having a circular cross section in the lower part of a cylindrical body part 22 having an opening 26 in the upper part. The anchor part 23 consisting only of is provided. Since the implant material 21 is provided so that the anchor element 24, 24 'is in an eccentric position with respect to the axis of the main body 22, as in the first embodiment of FIG. Since 23 has a function of preventing the rotation of the implant material 21, the implant material 21 cannot rotate, so that no wobble occurs and the stability is high. In addition, since the anchor portion is constituted by a plurality of anchor portion elements, even when an external force is applied to the implant material 21, since the external force is received by the plurality of anchor portion elements, the stability against the external force is high. . The implant material 21 can connect the abutment and the superstructure by a known method. For example, the lower end of the abutment shown in FIG. 3 is inserted into the opening 26 to connect the main body 22 and the abutment. Further, the implant material 21 can be used as an artificial tooth root by connecting the superstructure to the abutment. In the implant material 21, since the anchor part elements 24, 24 ′ are arranged symmetrically about the axis of the main body part 22, when an external force acts on the main body part 22, the external force is applied to the plurality of anchor part elements. Since it is dispersed, it can be stably fixed to the jawbone as an artificial tooth root. In addition, as long as the implant material 21 does not impair the rotation prevention function, as shown in FIG. 5C, the thickness of the implant material 21 in FIG. It is also possible to use an implant material 21 ′ whose tip is deformed so as to gradually decrease.

  In FIG. 6, the implant material 31 which is the fourth embodiment example has three anchor part elements 34, 34 ′ having a circular cross section in the lower part of a cylindrical body part 32 having an opening 36 in the upper part. , 34 ″ only. The implant material 31 is provided so that the anchor part elements 34, 34 ′, 34 ″ are located in an eccentric position with respect to the axis of the main body part 32, similarly to the implant material 21 of FIG. 3. Since the portion 33 has a function of preventing the rotation of the implant material 31, the implant material 31 cannot rotate, so that no wobble occurs and the stability is high. In addition, since the implant material 31 is provided with one more anchor part element than the implant material 21, when an external force is applied to the implant material 31, a plurality of anchor part elements are provided compared to the implant material 21. Therefore, it is highly stable against external force and can be stably fixed to the jawbone as an artificial tooth root.

In FIG. 7, the implant material 41 as the fifth embodiment example has a circular cross section at the bottom of a cylindrical main body 42 having an opening 46 at the top, and gradually decreases as the outer diameter approaches the tip. The anchor part 43 which has only one anchor part element 44 is provided. The implant material 41 is provided as a single anchor part element instead of a plurality. However, since the anchor part element 44 is provided so as to be eccentric with respect to the axis of the main body part 42, the anchor part 43 is provided. Since the implant material 41 has a function of preventing the rotation of the implant material 41, the implant material 41 cannot rotate, so that no wobble occurs and the stability is high. In this embodiment example, the anchor part element itself is an anchor part. In addition, as shown in FIG.7 (c), the implant material 41 can also shorten the anchor part element 44 according to the objective and an application site | part.

  In FIG. 8, an implant material 51 according to a sixth embodiment example has a triangular shape having a vertex with a rounded cross section at the bottom of a cylindrical main body 52 having an opening 56 in the upper portion. The tip portion is formed so that the outer diameter gradually decreases from the vicinity of the tip toward the tip 542 so that the tip 542 is shifted from the center of the cross section of the portion 541. In this embodiment, as the anchor portion 53, the center of the connection surface between one anchor portion element 54 and the main body portion 52 coincides with the axis Y of the main body portion 52. Since the anchor portion element 54 is provided with the tip 542 of the anchor portion element 54 off the axis of the trunk portion 541, the axis P passing through the tip 542 of the anchor portion element 54 is eccentric with respect to the axis Y of the main body portion 52. It is provided so that it may become the position. Therefore, in order for the main body portion 52 to rotate about the axis, the tip 542 of the anchor portion element 54 has to make a circumferential movement around the axis of the main body portion, so that the anchor portion element 54 and the cancellous bone portion are engaged. As a result, the tip 542 cannot rotate. Therefore, since the main body 52 cannot rotate the shaft, the anchor has a rotation preventing function, and the implant material 50 does not wobble and has high stability.

  In the seventh embodiment example of FIG. 9, the eighth embodiment example of FIG. 10, and the ninth embodiment example of FIG. 11, the implant materials 61, 71, 81 have openings 66, 76, 86 at the top. Two anchor part elements each having a tip part formed so that the outer diameter gradually decreases from the vicinity of the tip toward the tip at the lower part of the cylindrical main body 62, 72, 82 having the elliptical cross section. Three and four are provided. The implant materials 61, 71, 81 are such that the anchor element 64, 64 ′, 74-74 ″, 84-84 ′ ″ is offset from the axis of the body 62, 72, 82, respectively. Since the anchor portions 63, 73, 83 have a function of preventing the rotation of the implant materials 61, 71, 81, respectively, the implant materials 61, 71, 81 can rotate. Because it is not possible, there is no wobble and high stability. In addition, since the anchor part is constituted by a plurality of anchor part elements, even when an external force is applied to the implant materials 61, 71, 81, in order to receive the external force by the plurality of anchor part elements, High stability. In addition, the implant materials 61, 71, 81 are arranged in such a manner that the anchor elements 64, 64 ′, 74-74 ″, 84-84 ′ ″ are symmetrical about the axis of the main body 62, 72, 82, respectively. Therefore, when an external force is applied to the main body portions 62, 72, and 82, the external force is distributed to the plurality of anchor portion elements, so that it can be stably fixed to the jawbone as an artificial tooth root. 9 to 11, a plurality of anchor portions having an elliptical cross section are used, but a single anchor portion may be used as shown in FIGS. 7 and 8. In addition, in the embodiment examples of FIGS. 9 to 11, a plurality of anchor elements having an elliptical cross section are used. However, like these embodiment examples, as shown in FIG. Elements may be used. The main body portions 62, 72, and 82 have a circular cross section. However, in the implant material of the present invention, the main body portions have a cross section that is elliptical. It may have a conical shape, and the length, size, etc. can be adjusted according to the purpose and application site.

  In FIG. 12, an implant material 91 according to the tenth embodiment is provided with a bottom surface portion 97 at the bottom of a cylindrical main body portion 92, and the bottom surface portion 97 is provided with an anchor portion 93 composed of two anchor portion elements. ing. Further, a wall portion 98 is formed on the bottom surface portion 97 with a space from the main body portion 92. In FIG. 12, a cylindrical wall portion 98 is formed so as to be coaxial with the main body portion 92, and the main body portion 92 and the main body portion 92 can be inserted into the holes of the upper structure as shown in FIG. An interval from the wall 98 is provided. The wall 98 is provided with a female screw portion 99 on the inner surface, and a male screw portion that can be screwed with the female screw portion 99 is provided below the upper surface of the upper structure, thereby fixing the upper structure to the implant material 91. Can be easily done. Since the implant material 91 has the same structure as that of the implant material 21 except for having the main body 92, the implant material 91 cannot rotate and therefore does not wobble and has high stability. Even when an external force is applied to 91, the external force is received by the plurality of anchor part elements 94, 94 ′. The wall 98 prevents the bone cortex and gingiva from penetrating to the vicinity of the main body 92 until the implant material 91 is fixed, and prevents the attachment of the superstructure. By attaching the cap so as to cover the space inside 98, it is possible to easily prevent the bone cortex, gingiva and the like from entering the vicinity of the main body 92 until the superstructure is attached.

  The above-mentioned implant material can be manufactured using a known material as long as it does not adversely affect the human body, and can be made of titanium or a titanium alloy because of its good biocompatibility.

  Furthermore, the implant material of the present invention can have a metal network formed of titanium fibers in the anchor portion and / or the main body portion. By constructing at least a part or all of the body tissue in contact with the human tissue with a metal mesh, cells are induced in the metal mesh to improve the fixability with the living body. It can be. The position at which the metal mesh is disposed is not particularly limited, but as shown in FIG. 13, the zone 1 body, the zone 2 anchor portion, the zone 3 body lower portion, and the zone 4 body portion. Any one of the four zones around the lower anchor portion and a combination thereof can be provided. When the metal mesh is disposed in Zone 1, Zone 2, and Zone 4, the metal mesh can promote the fixation with the bone, and in Zone 3, the metal mesh can be used to promote bone. And / or promotion of fixation with gingiva can be aimed at. In addition, as long as the said metal net-like body has two or more space | intervals pinched | interposed into the metal wire, the form will not be specifically limited, The layer which has the space | interval formed by the single or several metal fiber May be a laminate of a plurality of metal fibers may be wound, and is not particularly limited as long as it is suitable for cell introduction or cell culture use, A well-known thing can be used.

  By using the implant material of the present invention as an artificial tooth root, it is easy to attach to the human body and can be used as an artificial tooth root having excellent stability such that it does not wobble when a denture is attached.

DESCRIPTION OF SYMBOLS 1 Implant material 2 Main body part 3 Anchor part 4, 4 'Anchor part element 11 Implant material 12 Main body part 13 Anchor part 14, 14', 14 '' Anchor part element 21 Implant material 22 Main body part 23 Anchor part 24, 24 'Anchor Part element 31 Implant material 32 Body part 33 Anchor part 34, 34 ', 34''Anchor part element 41 Implant material 42 Body part 43 Anchor part 44 Anchor part element 51 Implant material 52 Body part 53 Anchor part 54 Anchor part element 61 Implant Material 62 Body portion 63 Anchor portion 64, 64 ′ Anchor portion element 71 Implant material 72 Body portion 73 Anchor portion 74, 74 ′, 74 ″ Anchor portion element 81 Implant material 82 Body portion 83 Anchor portion 84, 84 ′, 84 ′ ', 84''' Anchor section element 91 implant material 92 body portion 93 the anchor portions 94 and 94 'anchoring section element 97 bottom portion 98 the wall portion 99 a female screw portion 101 the implant material 102 body 103 anchor portions 104, 104' anchor section element 106 opening

  The present invention relates to an implant material that can be used for an artificial tooth root used in implant treatment in the dental field.

  When a tooth is lost due to caries, periodontal disease, or the like, a denture is attached to the part where the tooth has been lost by using an artificial tooth root so that the tooth is not easily removed. As such an artificial tooth root, an artificial tooth root having a cylindrical embedded portion is usually used. When an artificial tooth root is embedded, a hole is drilled in a hard bone cortex and the embedded portion is embedded in a relatively soft cancellous bone. However, loosening tends to occur over time. When this looseness occurs, the stability becomes insufficient, such as wobbling of the denture, not only causing a problem of meshing, but also allowing bacteria to enter through the gap.

  As a means for preventing such loosening, it is conceivable to provide a male screw part in the embedded part and to form a screw groove in the bone cortex part with a screw groove forming jig and screw it in. Therefore, it is necessary to form a screw groove precisely, which is difficult in reality. In addition, as an artificial tooth root for preventing such loosening, it has been proposed to stabilize the artificial tooth root by using a screw-shaped fixing auxiliary means (Patent Document 1).

JP2009-233179A

  However, the artificial tooth root having the above-mentioned fixing auxiliary means is stable with respect to wobbling and the like because the fixing auxiliary means is screwed into the artificial tooth root body having a screw hole and the artificial tooth root body through the screw hole. However, the fixing auxiliary means is difficult to install, and becomes a burden on the human body. An object of the present invention is to provide an implant material that is easy to attach to a human body and has excellent stability such that it does not wobble when a denture is attached.

  The present invention is an implant material that includes an anchor portion and a main body portion, and the anchor portion has an anti-rotation function. Moreover, this invention is also an implant material which has the metal net body comprised by the said anchor part and / or the said main-body part with the titanium fiber.

  By using the implant material as an artificial tooth root, the anchor portion has an anti-rotation function. Therefore, when the anchor portion is embedded, the embedded portion exhibits the anti-rotation function. Increase. Therefore, even if an upper structure is provided via an abutment, it can receive the force received from other teeth during meshing, and it becomes an implant material with excellent stability by preventing wobble, The influence on the human body due to the meshing can be reduced.

  In addition, the present invention is also an implant material having a metal network formed of titanium fibers in the anchor part and / or the main body part. In addition to the anti-rotation function, the metal mesh can be fixed to the jawbone at an early stage, and stability such as prevention of wobbling can be improved by a simple attachment technique. The influence on the human body due to can be further eliminated.

1 is a perspective view of a first embodiment example of an implant material of the present invention. FIG. (A) It is the schematic diagram of the state which removed a part of bone cortex part from the implant material of FIG. 1, and was attached to the jawbone. (B) It is the schematic diagram of the state which removed the bone cortex part and attached to the jawbone of the implant material of FIG. (A) It is an assembly drawing which attaches a superstructure to the implant material of FIG. (B) It is an assembly drawing of the abutment and superstructure to which the implant material of FIG. 1 and the implant material are attached. (A) It is a perspective view of the 2nd embodiment of the implant material of this invention. (B) It is a bottom view of the implant material of Fig.4 (a). (A) It is a perspective view of the 3rd example of an embodiment of the implant material of this invention. (B) It is a bottom view of the implant material of Fig.5 (a). (C) It is the modification of the implant material of Fig.5 (a). (A) It is a perspective view of the example of the 4th embodiment of the implant material of this invention. (B) It is a bottom view of the implant material of Fig.6 (a). (A) It is a perspective view of the 5th example of an embodiment of the implant material of this invention. (B) It is a bottom view of the implant material of Fig.7 (a). (C) It is a modification of the implant material of Fig.7 (a). (A) It is a perspective view of the 6th embodiment example of the implant material of this invention. (B) It is a bottom view of the implant material of Fig.8 (a). (A) It is a perspective view of the 7th embodiment example of the implant material of this invention. (B) It is a bottom view of the implant material of Fig.9 (a). (A) It is a perspective view of the example of the 8th embodiment of the implant material of this invention. (B) It is a bottom view of the implant material of Fig.10 (a). (A) It is a perspective view of the 9th embodiment example of the implant material of this invention. (B) It is a bottom view of the implant material of Fig.11 (a). (A) It is a perspective view of the tenth embodiment example of the implant material of the present invention. (B) It is typical sectional drawing explaining the state which embed | buried the implant material of Fig.12 (a) in the jawbone. It is explanatory drawing of the attachment position of the metal net body with respect to the implant material of this invention. (A) It is a perspective view of the example of 11th embodiment of the implant material of this invention. (B) It is a bottom view of the implant material of Fig.14 (a).

  Hereinafter, although this invention is demonstrated using drawing, this invention is not limited to these. As shown in FIG. 1, the implant material 1 includes a main body portion 2 and an anchor portion 3. The anchor part 3 includes two anchor part elements 4 and 4 ′, and includes a connecting part 5 that connects the anchor part element 4 and the main body part 2, and a connecting part 5 ′ that connects the anchor part element 4 ′ and the main body part 2. I have. At the time of embedding, the implant material 1 is made by press-fitting at least a cylindrical anchor portion element 4 into the cancellous bone portion. At this time, in the implant material 1, the anchor part element and the cancellous bone part are engaged in the direction perpendicular to the press-fitting direction. In addition, in order to attach the implant material 1 to the jaw bone, it is possible to attach it by a normal method. For example, as shown in FIG. 2A, a part of the bone cortex of the jaw bone is excised with a drill or the like. After drilling a hole for anchor portion insertion in the cancellous bone portion with a drill or the like, the anchor portion can be embedded in the cancellous bone portion.

  As shown in FIG. 3A, the implant material 1 embedded in the jawbone may have the upper structure 8 attached to the main body 2 of the implant material 1 as shown in FIG. As shown, the abutment 7 may be mounted, and the abutment 7 may be further mounted with an upper structure 8. The connection between the main body 2 and the abutment 7 is not particularly limited as long as the abutment 7 is securely fixed to the main body 2 of the implant material 1 which is an artificial tooth root. For example, FIG. You may connect the main-body part 2 firmly to the hole provided in the lower end of the upper structure of a). It is also possible to provide a hole at the lower end of the abutment 7 in FIG. 3 (b) so that the hole and the main body 2 are fitted and firmly fixed. In FIG. 2B, the bone cortex is excised and the cancellous bone and the anchor are engaged. In FIG. 2A, a part of the bone cortex is excised and the anchor is embedded. Therefore, since the bone cortex part and the anchor part which are harder than the cancellous bone part are engaged, the implant material 1 is fixed more firmly. At this time, the axis X of the implant material 1 coincides with the axis Y of the main body 2 and is parallel to the axes Z and Z ′ of the anchor elements 4 and 4 ′, but the anchor elements 4 and 4 ′. Are not located coaxially with the axis Y of the main body 2, and the axes Z and Z 'of the anchor elements 4, 4' are eccentric with respect to the axis Y of the main body 2. The anchor portion 3 is provided so as to be in the position. Therefore, when an external force is applied to the implant material 1 so as to rotate about the axis Y of the main body 2, the anchor elements 4, 4 ′ become the axes Z, Z ′ of the anchor elements 4, 4 ′. The force acts so that the anchor part elements 4, 4 ′ perform a circumferential movement around the axis Y of the main body 2. However, since the anchor part elements 4, 4 ′ and the cancellous bone part are engaged, the circumferential movement cannot be performed. Therefore, when the anchor part elements 4, 4 ′ are provided at a position deviated from the axis Y of the main body part 2, the anchor part 3 has a rotation preventing function, so that the implant material 1 performs a rotational movement. Since it cannot be performed, it does not cause wobble and has high stability. In addition, since the anchor part elements 4 and 4 ′ have an axis parallel to the axis X of the implant material 1, it is easy to press into the cancellous bone part by pressing the implant material 1. In the implant material 1, the anchor elements 4 and 4 ′ are arranged symmetrically about the axis Y of the main body, so that when an external force is applied to the main body, the external force is distributed to the plurality of anchor elements. Therefore, it can be stably fixed to the jawbone as an artificial tooth root. 2A, the main body 2 of the implant material 1 protrudes from the bone cortex from the boundary with the anchor 3, and in FIG. 2B, a part of the upper side of the main body 2 of the implant material 1 is projected. Protrudes from the bone cortex. Therefore, the main body 2 can be covered with a cap or the like until the implant material 1 is fixed to the jawbone. In the embodiment of FIG. 2B, the gingiva etc. Can also be prevented from entering.

  4 to 12 are views showing other embodiments of the implant material of the present invention. As shown in FIG. 4, the implant material 11 as the second embodiment example includes an anchor portion 13 at the lower portion of the main body portion 12. The anchor portion 13 is branched from the portion of the main body portion 12, and includes three cylindrical anchor portion elements 14, 14 ', 14' 'via a connecting portion. As in the case of the first embodiment, the anchor part elements 14, 14 ', 14' 'are provided at positions eccentric with respect to the axis of the main body part 12, so that the anchor part 13 functions to prevent rotation. Since the implant material 11 cannot rotate because it has, there is no wobble and the stability is high. In addition, since the anchor portion is constituted by a plurality of anchor portion elements, even when an external force is applied to the implant material 11, since the external force is received by the plurality of anchor portion elements, the stability against the external force is high. .

  In FIG. 5, an implant material 21 according to a third embodiment example has two anchor part elements 24, 24 ′ having a circular cross section in the lower part of a cylindrical body part 22 having an opening 26 in the upper part. The anchor part 23 which consists only of is provided. Since the implant material 21 is provided so that the anchor element 24, 24 'is in an eccentric position with respect to the axis of the main body 22, as in the first embodiment of FIG. Since 23 has a function of preventing the rotation of the implant material 21, the implant material 21 cannot rotate, so that no wobble occurs and the stability is high. In addition, since the anchor portion is constituted by a plurality of anchor portion elements, even when an external force is applied to the implant material 21, since the external force is received by the plurality of anchor portion elements, the stability against the external force is high. . The implant material 21 can connect the abutment and the superstructure by a known method. For example, the lower end of the abutment shown in FIG. 3 is inserted into the opening 26 to connect the main body 22 and the abutment. Further, the implant material 21 can be used as an artificial tooth root by connecting the superstructure to the abutment. In the implant material 21, since the anchor part elements 24, 24 ′ are arranged symmetrically about the axis of the main body part 22, when an external force acts on the main body part 22, the external force is applied to the plurality of anchor part elements. Since it is dispersed, it can be stably fixed to the jawbone as an artificial tooth root. In addition, as long as the implant material 21 does not impair the rotation prevention function, as shown in FIG. 5C, the thickness of the implant material 21 in FIG. It is also possible to use an implant material 21 ′ whose tip is deformed so as to gradually decrease.

  In FIG. 6, the implant material 31 which is the fourth embodiment example has three anchor part elements 34, 34 ′ having a circular cross section in the lower part of a cylindrical body part 32 having an opening 36 in the upper part. , 34 ″ only. The implant material 31 is provided so that the anchor element 34, 34 ', 34' 'is in an eccentric position with respect to the axis of the main body 32, like the implant material 21 of FIG. Since the portion 33 has a function of preventing the rotation of the implant material 31, the implant material 31 cannot rotate, so that no wobble occurs and the stability is high. In addition, since the implant material 31 is provided with one more anchor part element than the implant material 21, when an external force is applied to the implant material 31, a plurality of anchor part elements are provided compared to the implant material 21. Therefore, it is highly stable against external force and can be stably fixed to the jawbone as an artificial tooth root.

  In FIG. 7, the implant material 41 as the fifth embodiment example has a circular cross section at the bottom of a cylindrical main body 42 having an opening 46 at the top, and gradually decreases as the outer diameter approaches the tip. The anchor part 43 which has only one anchor part element 44 is provided. The implant material 41 is provided as a single anchor part element instead of a plurality. However, since the anchor part element 44 is provided so as to be eccentric with respect to the axis of the main body part 42, the anchor part 43 is provided. Since the implant material 41 has a function of preventing the rotation of the implant material 41, the implant material 41 cannot rotate, so that no wobble occurs and the stability is high. In this embodiment example, the anchor part element itself is an anchor part. In addition, as shown in FIG.7 (c), the implant material 41 can also shorten the anchor part element 44 according to the objective and an application site | part.

  In FIG. 8, an implant material 51 according to a sixth embodiment example has a triangular shape having a vertex with a rounded cross section at the bottom of a cylindrical main body 52 having an opening 56 in the upper portion. The tip portion is formed so that the outer diameter gradually decreases from the vicinity of the tip toward the tip 542 so that the tip 542 is shifted from the center of the cross section of the portion 541. In this embodiment, as the anchor portion 53, the center of the connection surface between one anchor portion element 54 and the main body portion 52 coincides with the axis Y of the main body portion 52. Since the anchor portion element 54 is provided with the tip 542 of the anchor portion element 54 off the axis of the trunk portion 541, the axis P passing through the tip 542 of the anchor portion element 54 is eccentric with respect to the axis Y of the main body portion 52. It is provided so that it may become the position. Therefore, in order for the main body portion 52 to rotate about the axis, the tip 542 of the anchor portion element 54 has to make a circumferential movement around the axis of the main body portion, so that the anchor portion element 54 and the cancellous bone portion are engaged. As a result, the tip 542 cannot rotate. Therefore, since the main body 52 cannot rotate the shaft, the anchor has a function of preventing rotation, and the implant material 51 does not wobble and has high stability.

  In the seventh embodiment example of FIG. 9, the eighth embodiment example of FIG. 10, and the ninth embodiment example of FIG. 11, the implant materials 61, 71, 81 have openings 66, 76, 86 at the top. Two anchor part elements each having a tip part formed so that the outer diameter gradually decreases from the vicinity of the tip toward the tip at the lower part of the cylindrical main body 62, 72, 82 having the elliptical cross section. Three and four are provided. The implant materials 61, 71, 81 are such that the anchor element 64, 64 ′, 74-74 ″, 84-84 ′ ″ is offset from the axis of the body 62, 72, 82, respectively. Since the anchor portions 63, 73, 83 have a function of preventing the rotation of the implant materials 61, 71, 81, respectively, the implant materials 61, 71, 81 can rotate. Because it is not possible, there is no wobble and high stability. In addition, since the anchor part is constituted by a plurality of anchor part elements, even when an external force is applied to the implant materials 61, 71, 81, in order to receive the external force by the plurality of anchor part elements, High stability. In addition, the implant materials 61, 71, 81 are arranged in such a manner that the anchor elements 64, 64 ′, 74-74 ″, 84-84 ′ ″ are symmetrical about the axis of the main body 62, 72, 82, respectively. Therefore, when an external force is applied to the main body portions 62, 72, and 82, the external force is distributed to the plurality of anchor portion elements, so that it can be stably fixed to the jawbone as an artificial tooth root. 9 to 11, a plurality of anchor portions having an elliptical cross section are used, but a single anchor portion may be used as shown in FIGS. 7 and 8. In addition, in the embodiment examples of FIGS. 9 to 11, a plurality of anchor elements having an elliptical cross section are used. However, like these embodiment examples, as shown in FIG. Elements may be used. The main body portions 62, 72, and 82 have a circular cross section. However, in the implant material of the present invention, the main body portions have a cross section that is elliptical. It may have a conical shape, and the length, size, etc. can be adjusted according to the purpose and application site.

  In FIG. 12, an implant material 91 according to the tenth embodiment is provided with a bottom surface portion 97 at the bottom of a cylindrical main body portion 92, and the bottom surface portion 97 is provided with an anchor portion 93 composed of two anchor portion elements. ing. Further, a wall portion 98 is formed on the bottom surface portion 97 with a space from the main body portion 92. In FIG. 12, a cylindrical wall portion 98 is formed so as to be coaxial with the main body portion 92, and the main body portion 92 and the main body portion 92 can be inserted into the holes of the upper structure as shown in FIG. An interval from the wall 98 is provided. The wall 98 is provided with a female screw portion 99 on the inner surface, and a male screw portion that can be screwed with the female screw portion 99 is provided below the upper surface of the upper structure, thereby fixing the upper structure to the implant material 91. Can be easily done. Since the implant material 91 has the same structure as that of the implant material 21 except for having the main body 92, the implant material 91 cannot rotate and therefore does not wobble and has high stability. Even when an external force is applied to 91, the external force is received by the plurality of anchor part elements 94, 94 ′. The wall 98 prevents the bone cortex and gingiva from penetrating to the vicinity of the main body 92 until the implant material 91 is fixed, and prevents the attachment of the superstructure. By attaching the cap so as to cover the space inside 98, it is possible to easily prevent the bone cortex, gingiva and the like from entering the vicinity of the main body 92 until the superstructure is attached.

  The above-mentioned implant material can be manufactured using a known material as long as it does not adversely affect the human body, and can be made of titanium or a titanium alloy because of its good biocompatibility.

  Furthermore, the implant material of the present invention can have a metal network formed of titanium fibers in the anchor portion and / or the main body portion. By constructing at least a part or all of the body tissue in contact with the human tissue with a metal mesh, cells are induced in the metal mesh to improve the fixability with the living body. It can be. The position at which the metal mesh body is disposed is not particularly limited. However, as shown in FIG. 13, the zone 1 main body, the zone 2 anchor, the zone 3 lower body, and the zone 4 main body. It can be provided in any of the four zones around the anchor portion on the lower part side and in a combination thereof. When the metal mesh is disposed in Zone 1, Zone 2, and Zone 4, the metal mesh can promote the fixation with the bone, and in Zone 3, the metal mesh can be used to promote bone. And / or promotion of fixation with gingiva can be aimed at. In addition, as long as the said metal net-like body has two or more space | intervals pinched | interposed into the metal wire, the form will not be specifically limited, The layer which has the space | interval formed by the single or several metal fiber May be a laminate of a plurality of metal fibers may be wound, and is not particularly limited as long as it is suitable for cell introduction or cell culture use, A well-known thing can be used.

  By using the implant material of the present invention as an artificial tooth root, it is easy to attach to the human body and can be used as an artificial tooth root having excellent stability such that it does not wobble when a denture is attached.

DESCRIPTION OF SYMBOLS 1 Implant material 2 Main body part 3 Anchor part 4, 4 'Anchor part element 11 Implant material 12 Main body part 13 Anchor part 14, 14', 14 '' Anchor part element 21 Implant material 22 Main body part 23 Anchor part 24, 24 'Anchor Part element 31 Implant material 32 Body part 33 Anchor part 34, 34 ', 34''Anchor part element 41 Implant material 42 Body part 43 Anchor part 44 Anchor part element 51 Implant material 52 Body part 53 Anchor part 54 Anchor part element 61 Implant Material 62 Body portion 63 Anchor portion 64, 64 ′ Anchor portion element 71 Implant material 72 Body portion 73 Anchor portion 74, 74 ′, 74 ″ Anchor portion element 81 Implant material 82 Body portion 83 Anchor portion 84, 84 ′, 84 ′ ', 84''' Anchor section element 91 implant material 92 body portion 93 the anchor portions 94 and 94 'anchoring section element 97 bottom portion 98 the wall portion 99 a female screw portion 101 the implant material 102 body 103 anchor portions 104, 104' anchor section element 106 opening

Claims (6)

An implant material comprising an anchor portion and a main body portion, wherein the anchor portion has a rotation preventing function. A body portion connected to the superstructure directly or via an abutment, wherein the anchor portion includes one or more anchor portion elements, and at least one of the anchor portion elements is eccentric with respect to the axis of the body portion; The implant material according to claim 1, which is provided as follows. The implant material according to claim 1, wherein the anchor portion can be press-fitted into a cancellous bone portion. The implant material according to any one of claims 1 to 3, wherein there are two or more anchor part elements, and the anchor part elements are arranged symmetrically about the axis of the main body part. The implant material according to claim 1, wherein the anchor portion has a branch. The implant material according to any one of claims 1 to 5, wherein the anchor portion and / or the main body portion has a metal net formed of titanium fibers.

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