JP2017063933A - Dental implant fixture, dental implant system, and dental implant - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a dental implant fixture with excellent intraosseous fixability and removability, and a dental implant system and a dental implant having the same.SOLUTION: A dental implant fixture 1 comprises: a bottomed substantially cylindrical body part 2; pin insertion holes 3 penetrating between an inner peripheral surface 231 and an outer peripheral surface 232 of a side wall part 23 of the body part 2; and pins 4 inserted into the pin insertion holes 3 in a state in which pin tip parts 41 can protrude outward from the outer peripheral surface 232. A dental implant system and a dental implant having the dental implant fixture 1 are provided.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a fixture for a dental implant, and a dental implant system and a dental implant including the fixture.

  Conventionally, a dental implant fixture (hereinafter sometimes referred to as “fixture”) is embedded in the alveolar bone of the maxilla and mandible to restore the occlusal function, vocalization function and aesthetics. A planting operation is performed (see, for example, Patent Documents 1 to 3).

  It is desirable that the fixture embedded in the alveolar bone is firmly fixed in the bone. Further, when removing the embedded fixture from the alveolar bone for reasons such as infection, it is desirable that the fixture can be easily removed with minimal invasiveness without damaging the surrounding bone tissue in which the fixture is embedded.

JP 11-33039 A Japanese National Patent Publication No. 11-501856 Special table 2003-525690 gazette

  An object of the present invention is to provide a dental implant fixture having excellent intraosseous fixation and extraction, and a dental implant system and a dental implant including the fixture.

As a result of intensive studies to solve the above-mentioned problems, the present inventors have found a solution means having the following constitution and have completed the present invention.
(1) A bottomed substantially cylindrical main body, a pin insertion hole penetrating between the inner peripheral surface and the outer peripheral surface of the side wall portion of the main body, and a pin tip end outward from the outer peripheral surface. A dental implant fixture, comprising: a pin inserted into the pin insertion hole in a projectable state.
(2) The fixture for dental implants according to (1), wherein the pin is connected to a pin rear end portion and has a head having an outer diameter larger than an inner diameter of the pin insertion hole.
(3) The dental apparatus according to (1) or (2), wherein the dental apparatus includes a plurality of the pin insertion holes, and the plurality of pin insertion holes are spaced from each other along a longitudinal direction of the main body portion. Implant fixture.
(4) A plurality of the pin insertion holes, wherein the plurality of pin insertion holes are located at intervals from each other along the circumferential direction of the main body. The fixture for dental implants as described.
(5) A plurality of the pin insertion holes are provided, and in the cross-sectional view perpendicular to the longitudinal direction of the main body portion, the plurality of pin insertion holes have rotational symmetry with respect to the central axis of the main body portion. The fixture for dental implants in any one of 1)-(4).
(6) The fixture for dental implants according to any one of (1) to (5), wherein the outer peripheral surface has a curved surface shape.
(7) The fixture for dental implants according to (6), further comprising a coating layer laminated on the outer peripheral surface.
(8) The outer peripheral surface has a taper region that is located on the distal end side of the main body and has an outer diameter that decreases toward the distal end. (1) to (7) The fixture for dental implants in any one of.
(9) The dental implant fixture according to any one of (1) to (8) above, and the pin inserted outwardly into a hollow portion surrounded by the bottom of the main body and the inner peripheral surface And a substantially rod-shaped pushing member that pushes out toward the dental implant system.
(10) The dental implant system according to (9), wherein, in a cross-sectional view perpendicular to the longitudinal direction of the push-out member, the push-out member has a region whose radius is gradually increased along the circumferential direction.
(11) The dental implant system according to (9) or (10), wherein when the pushing member is inserted into the hollow portion, a central axis of the pushing member is coaxial with a central axis of the main body portion.
(12) Any one of (9) to (11), further including a pull-back member that is inserted into the hollow portion and engages with a pin rear end side of the pin and pulls the pin tip portion back to the hollow portion side. A dental implant system according to claim 1.
(13) The dental implant system according to (12), wherein the pullback member includes a slit that sandwiches the pin rear end side.
(14) The dental implant fixture according to any one of (1) to (8), and a structural component attached to a rear end portion of the body portion of the dental implant fixture. Dental implant.
(15) A substantially rod-like push-out member that is inserted into the hollow portion surrounded by the bottom portion of the main body portion and the inner peripheral surface and pushes the pin outward is further provided in a state of being attached to the structural component. The dental implant according to (14).

  According to the present invention, there is an effect that it is excellent in intraosseous fixation and removal properties.

It is a figure which shows the fixture for dental implants which concerns on one Embodiment of this invention, (a) is a schematic explanatory drawing which shows the state which the pin front-end | tip part has not protruded, (b) has the state which the pin front-end | tip part protrudes It is a schematic explanatory drawing shown. It is a figure which shows the fixture for dental implants shown in FIG. 1, (a) is sectional drawing which expands and shows the state cut | disconnected along the II line | wire of Fig.1 (a), (b) is FIG. It is sectional drawing which expands and shows the state cut | disconnected along the II-II line of b). It is a schematic explanatory drawing which shows the state which embedded the dental implant fixture shown in FIG. 1 in the alveolar bone. It is a schematic explanatory drawing which shows the fixture for dental implants which concerns on other embodiment of this invention. BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows the dental implant system which concerns on one Embodiment of this invention, (a) is a schematic explanatory drawing which shows the state which the pin front-end | tip part does not protrude, (b) is the outline which shows the state which the pin front-end | tip part protrudes It is explanatory drawing. It is a figure which shows the dental implant system shown in FIG. 5, (a) is sectional drawing which expands and shows the state cut | disconnected along the III-III line | wire of FIG. 5 (a), (b) is FIG.5 (b). It is sectional drawing which expands and shows the state cut | disconnected along IV-IV line. It is a figure which shows the extrusion member with which the dental implant system shown in FIG. 5 is provided, (a) is a side view, (b) is sectional drawing which expands and shows the state cut | disconnected along the VV line of (a). is there. It is a figure which expands and shows the pullback member with which the dental implant system shown in FIG. 5 is provided, (a) is a front view, (b) is a VI arrow side view except the cap of (a). (A) And (b) is a schematic explanatory drawing which expands and shows the state which pulls back a pin front-end | tip part using the pullback member shown in FIG.

<Fixture for dental implant>
Hereinafter, a dental implant fixture according to an embodiment of the present invention will be described in detail with reference to FIGS.

  As shown in FIG. 1, the fixture 1 of the present embodiment includes a main body 2 having a substantially cylindrical shape with a bottom. The main body 2 has a front end 21, a rear end 22 and a side wall 23. The main body 2 includes a bottom 24 located on the front end 21 side, a hollow 25 surrounded by the bottom 24 and the inner peripheral surface 231 of the side wall 23, and an opening opened at the rear end 22. 26.

  Here, the fixture 1 of the present embodiment further includes a plurality of pin insertion holes 3 and a plurality of pins 4 in addition to the main body 2 described above. As shown in FIGS. 1 and 2, each of the plurality of pin insertion holes 3 penetrates between the inner peripheral surface 231 and the outer peripheral surface 232 of the side wall portion 23 of the main body 2. Further, as shown in FIG. 1A and FIG. 2A, each of the plurality of pins 4 is in a state in which the pin tip 41 can protrude outward from the outer peripheral surface 232 as indicated by the arrow a. Each of the plurality of pin insertion holes 3 is inserted. According to these configurations, it is possible to exhibit excellent intraosseous fixation and extraction properties as follows.

  That is, as shown in FIG. 3, after the fixture 1 is embedded in the alveolar bone 100 of the jawbone, each pin tip 41 of the plurality of pins 4 is protruded outward from the outer peripheral surface 232 to form a bone. Can be pressed into the tissue. As a result, the fixture 1 can be firmly fixed to the alveolar bone 100, and excellent intra-bone fixation can be exhibited. In addition, when the embedded fixture 1 is removed from the alveolar bone 100 for reasons such as infection, it is possible to exhibit excellent removal properties by pulling the pin tip portion 41 back to the hollow portion 25 side. Therefore, the fixture 1 can be easily removed with minimal invasiveness while suppressing damage to the surrounding bone tissue in which the fixture 1 is embedded.

  The number of pin insertion holes 3 and the number of pins 4 are the same. Moreover, the number of each of the pin insertion hole 3 and the pin 4 should just be at least one. The numbers of the pin insertion holes 3 and the pins 4 are preferably 1 to 36, more preferably 12 to 24, but are not limited thereto. From the viewpoint of improving intraosseous fixation, the number of pin insertion holes 3 and pins 4 is preferably plural as in this embodiment.

  As shown in FIG. 2B, the protruding length L of the pin tip 41 is preferably 0.1 to 1.0 mm, more preferably 0.1 to 0.5 mm. There is nothing to be limited to these.

  In the present embodiment, each of the plurality of pins 4 has the following shape. That is, the pin 4 has a substantially cylindrical shape as a whole. Moreover, the shape of the pin front-end | tip part 41 is a substantially curved surface shape. Note that the shape of the pin 4 is not limited to the shape described above.

  In the present embodiment, as shown in FIG. 2B, each of the plurality of pins 4 has a head 43. The head 43 is connected to the pin rear end portion 42, and its outer diameter W 1 is larger than the inner diameter W 2 of the pin insertion hole 3. That is, the outer diameter W1 and the inner diameter W2 have a relationship of W1> W2. According to such a configuration, since the head 43 functions as a stopper, the pin 4 can be prevented from coming out of the pin insertion hole 3.

  The head 43 may be constituted by a member separate from the pin 4 or may be formed integrally with the pin 4. In the present embodiment, the head 43 is formed integrally with the pin 4. Integrally molded means that the entire molded body is integrally formed from the same material without using the joining means, instead of being joined using welding or other joining means after processing each part. It means that it is made. Examples of the method of integrally molding include, but are not limited to, cutting.

  The head 43 of this embodiment has a reduced diameter portion 431 as shown in FIG. The reduced diameter portion 431 is a portion of the head 43 that is located on the pin rear end portion 42 side and is reduced in diameter toward the pin rear end portion 42. According to such a configuration, a slit 63 of the pull-back member 6 described later can easily pinch the pin rear end portion 42 side (see FIGS. 8B and 9).

  In the present embodiment, as shown in FIG. 1A, the plurality of pin insertion holes 3 are located at intervals from each other along the longitudinal direction b of the main body 2. The plurality of pin insertion holes 3 may be positioned at equal intervals along the longitudinal direction b, or may be positioned at unequal intervals. In the present embodiment, the plurality of pin insertion holes 3 are located at equal intervals along the longitudinal direction b.

  In the present embodiment, as shown in FIG. 2A, the plurality of pin insertion holes 3 are positioned at intervals from each other along the circumferential direction c of the main body 2. The plurality of pin insertion holes 3 may be positioned at equal intervals along the circumferential direction c, or may be positioned at unequal intervals. In the present embodiment, the plurality of pin insertion holes 3 are located at equal intervals along the circumferential direction c.

  In the present embodiment, in a cross-sectional view (see FIG. 2) perpendicular to the longitudinal direction b of the main body 2 (see FIG. 1A), the plurality of pin insertion holes 3 are based on the central axis X1 of the main body 2. And has rotational symmetry. Specifically, in the cross-sectional view described above, the plurality of pin insertion holes 3 have a rotational symmetry of 180 ° with respect to the central axis X1. The rotational symmetry is not limited to 180 °, and may be 90 °, 120 °, for example. As shown in FIG. 1, the central axis X <b> 1 of the main body 2 is an axis that passes between the front end 21 and the rear end 22 of the main body 2, and becomes a rotation axis when the fixture 1 is rotated. It shall mean the axis.

  In the fixture 1 of the present embodiment, the outer peripheral surface 232 is curved. In other words, the fixture 1 of the present embodiment has no threaded portion formed on the outer peripheral surface 232. According to such a configuration, when the fixture 1 is embedded in the alveolar bone 100, since the compression to the bone is less than that of the fixture having a threaded portion formed on the outer peripheral surface, excellent implantability is achieved. Can be achieved. Moreover, when the coating layer is laminated | stacked on the outer peripheral surface 232, when the fixture 1 is embedded in the alveolar bone 100, it can suppress that a coating layer peels. Therefore, when the fixture 1 further includes a coating layer laminated on the outer peripheral surface 232, the usefulness of the present embodiment is improved. Examples of the coating layer include, but are not limited to, a hydroxyapatite coating layer and the like.

  Next, a dental implant fixture according to another embodiment of the present invention will be described in detail with reference to FIG. In FIG. 4, the same components as those in FIGS. 1 to 3 described above may be denoted by the same reference numerals and description thereof may be omitted.

  As shown in FIG. 4, the main body 2 ′ provided in the fixture 1 ′ of the present embodiment has an outer peripheral surface 232 ′ of the side wall 23 ′ located on the distal end 21 side. It has a taper region 232a in which the outer diameter M of the main body 2 'decreases as it goes. According to such a configuration, the embedding property when the fixture 1 ′ is embedded in the alveolar bone 100 can be improved, and the portion where the roots of adjacent teeth are close to each other or the narrow alveolar ridge Can easily embed the fixture 1 '. Inclined embedding to prevent perforation of the alveolar bone wall is also facilitated. Moreover, in the taper area | region 232a, since the protrusion length L of the pin front-end | tip part 41 becomes relatively larger than the rear-end part 22 side, the intraosseous fixation property on the front-end | tip part 21 side can be improved.

The distal end portion 21 may have a curved surface shape or a flat shape. The tip portion 21 of the present embodiment has a curved surface shape.
Since other configurations are the same as those of the fixture 1 according to the above-described embodiment, the description thereof is omitted.

<Dental implant system>
Next, a dental implant system according to an embodiment of the present invention will be described in detail with reference to FIGS. 5 to 9 by taking as an example the case of including the fixture 1 according to the above-described embodiment.

  As shown in FIG. 5, the dental implant system 10 of this embodiment includes a fixture 1 and an extrusion member 5. As shown in FIG. 5A, the push-out member 5 is inserted into the hollow portion 25 surrounded by the bottom portion 24 and the inner peripheral surface 231 of the main body portion 2, and each of the plurality of pins 4 is moved outward. It is a substantially rod-shaped member that pushes out.

  In a cross-sectional view (see FIG. 7B) perpendicular to the longitudinal direction d of the push-out member 5 (see FIG. 7A), the push-out member 5 of the present embodiment has a radius D gradually along the circumferential direction e. Has a region S which is larger than The extruding member 5 of the present embodiment has two regions S, and the two regions S and S are both located over the half circumference of the extruding member 5. According to these configurations, each of the plurality of pins 4 can be pushed outward as follows.

  First, as shown in FIG. 5A, the pushing member 5 is inserted into the hollow portion 25 through the opening portion 26 of the main body portion 2. Next, as shown in FIG. 6A, the pushing member 5 is rotated around its central axis X2. At this time, the pushing member 5 is rotated in the direction of the arrow f with the side having the smaller radius D in the region S as the front in the rotation direction. Thereby, with the change of the radius D in the region S, as shown in FIGS. 5B and 6B, each of the plurality of pins 4 can be pushed outward. In the present embodiment, as described above, since the region S is located over the half circumference of the push-out member 5, when the push-out member 5 is rotated approximately half, each of the plurality of pins 4 can be pushed outward. it can. The center axis X2 of the pushing member 5 described above is an axis that penetrates between the front end portion 51 and the rear end portion 52 of the pushing member 5, as shown in FIG. 7A, and rotates the pushing member 5. This means the axis that becomes the rotation axis.

  As shown in FIGS. 5 and 6, in this embodiment, when the pushing member 5 is inserted into the hollow portion 25, the center axis X <b> 2 of the pushing member 5 is coaxial with the center axis X <b> 1 of the main body portion 2. According to such a structure, the extrusion member 5 can be smoothly rotated in the hollow part 25, and the some pin 4 can be extruded uniformly.

  In the present embodiment, as shown in FIG. 1 described above, the main body 2 has a recess 27 that is located on the bottom 24 and includes the central axis X <b> 1 of the main body 2. The recess 27 has a conical shape whose inner wall has a vertex P on the central axis X <b> 1 of the main body 2. According to these configurations, as shown in FIG. 5, when the front end portion 51 of the push-out member 5 is brought into contact with the concave portion 27, the front end portion 51 of the push-out member 5 is drawn to the apex P side, Since the axis X2 is coaxial with the central axis X1 of the main body 2, the both axes can be easily aligned. In addition, the extrusion member 5 of the present embodiment has a conical shape in which the shape of the distal end portion 51 is convex forward from the viewpoint of easily performing axial alignment.

  On the other hand, the dental implant system 10 of the present embodiment further includes a pullback member 6 as shown in FIG. As shown in FIG. 9, the pull-back member 6 is inserted into the hollow portion 25 of the main body portion 2 and engaged with each pin rear end portion 42 side of the plurality of pins 4, and the pin front end portion 41 is engaged with the hollow portion. The member is pulled back to the 25 side. The pull-back member 6 of this embodiment has a slit 63 that sandwiches the pin rear end portion 42 side (see FIG. 8B). Hereinafter, the configuration of the pullback member 6 of the present embodiment will be specifically described.

  As shown in FIG. 8A, the pullback member 6 of the present embodiment has a pair of engagement pieces 6A and 6A that are positioned to face each other. Each of the pair of engaging pieces 6A and 6A is a long plate-like member, and has a slit 63 extending from the front end portion 61 toward the rear end portion 62 as shown in FIG. doing. Further, as shown in FIG. 8A, each of the pair of engaging pieces 6A, 6A is located on the rear end 62 side and is bent so that the distance between them is small. 64. The pullback member 6 further includes an elastic member 65 attached in the vicinity of the bent portion 64. The elastic member 65 of the present embodiment is a spring-like spring, but is not limited to this. The elastic member 65 may be accommodated in the case 68. In the present embodiment, when no external force is applied to the elastic member 65, a gap Y1 is formed between the rear end portions 62, 62 of the pair of engaging pieces 6A, 6A.

  The pullback member 6 of this embodiment further has a cap 66. The cap 66 of this embodiment is a substantially cylindrical member and has a female screw portion 661 located on the inner peripheral surface thereof. Each of the pair of engaging pieces 6 </ b> A and 6 </ b> A further includes a male screw portion 67 that is located on the rear end portion 62 side and can be screwed into the female screw portion 661 of the cap 66. According to these structures, each pin front-end | tip part 41 of the some pin 4 can be pulled back to the hollow part 25 side as follows.

  First, as shown in FIG. 9A, the pullback member 6 is inserted into the hollow portion 25 through the opening portion 26 of the main body portion 2. At this time, the pin rear end 42 side of each of the plurality of pins 4 is sandwiched between the slits 63 of the pair of engaging pieces 6A and 6A. In this embodiment, the pin rear end portion 42 and the reduced diameter portion 431 of the head 43 are sandwiched. As a result, the pin tip 41 can be moved inward of the main body 2 indicated by arrow g by the thickness of the engaging piece 6A, and a part of the pin tip 41 can be pulled back to the hollow portion 25 side. it can.

  Next, the cap 66 is moved in the direction of the arrow h, and the female screw portion 661 of the cap 66 is screwed into the male screw portion 67 located at the rear end portion 62 of each of the pair of engaging pieces 6A and 6A. Then, as shown in FIG. 9B, the cap 66 is tightened in the direction of arrow i. Thereby, the elastic member 65 is compressed. Accordingly, the gap Y1 formed between the rear end portions 62 and 62 of the pair of engagement pieces 6A and 6A is reduced, and the slit 63 is located in the pair of engagement pieces 6A and 6A. The distance Y2 between the parts is also reduced. As a result, the remaining portion of the pin tip portion 41 can be pulled back to the hollow portion 25 side, and the pin tip portion 41 can be brought out of the outer peripheral surface 232.

  The direction in which the cap 66 is tightened is not limited to the arrow i direction. In the present embodiment, the case where the fixture 1 is provided has been described as an example. However, the same effect can be obtained when the fixture 1 is provided instead of the fixture 1.

<Dental implant>
Next, a dental implant according to an embodiment of the present invention will be described in detail by taking as an example a case where the fixture 1 according to the embodiment described above is provided.

  The dental implant of the present embodiment includes the above-described fixture 1 and a structural component attached to the rear end portion 22 of the main body portion 2 of the fixture 1.

  The structural component is a so-called artificial tooth, which includes an artificial tooth made of metal, ceramic or hard resin. The artificial tooth is usually made to order and is attached to the rear end 22 of the fixture 1 via the abutment 7 shown in FIG. 5 described above. The artificial tooth may be a single type or a connected type (bridge). The artificial teeth described above include dentures in addition to artificial teeth. Examples of dentures include so-called dentures such as partial dentures and total dentures. The denture is attached to the rear end 22 of the fixture 1 through the attachment in a removable state.

  The structural component of this embodiment includes the abutment 7 described above. The abutment 7 is a member that connects artificial teeth to the fixture 1 and is fixed to the fixture 1 via an abutment screw. The abutment screw may be constituted by a member separate from the abutment 7 or may be formed integrally with the abutment 7. In this embodiment, the abutment screw is formed integrally with the abutment 7.

  On the other hand, the dental implant may further include the above-described push-out member 5 attached to a structural component. As shown in FIG. 7A, the dental implant according to the present embodiment further includes a push-out member 5 attached to the abutment 7.

  In the present embodiment, the pushing member 5 is formed integrally with the abutment 7. According to such a configuration, since the connection strength between the pushing member 5 and the abutment 7 is improved, the pushing member 5 can be prevented from being detached from the abutment 7. The pushing member 5 can be configured as a member separate from the abutment 7 and attached to the abutment 7.

  Although the case where the fixture 1 is provided has been described as an example in the present embodiment, the same effect can be obtained when the fixture 1 is provided instead of the fixture 1.

<Dental implant implantation surgery>
Next, the dental implant implantation operation according to an embodiment of the present invention will be described in detail by taking as an example the case where the dental implant system 10 according to the embodiment described above is used.

  First, the embedding hole is drilled in the alveolar bone 100 of the gingiva and the jawbone with a drill or the like, and the fixture 1 is embedded. In the present embodiment, as described above, since the outer peripheral surface 232 of the fixture 1 is a curved surface, the fixture 1 can be embedded smoothly.

  After the fixture 1 is embedded in the alveolar bone 100, each pin tip 41 of the plurality of pins 4 protrudes outward from the outer peripheral surface 232 and is pressed into the bone tissue, and the fixture 1 is inserted into the alveolar bone. Firmly fixed to 100. After the fixation of the fixture 1 is completed, a structural component is attached to the rear end 22 of the main body 2 to form a dental implant, and the treatment is completed. When the embedded fixture 1 is extracted from the alveolar bone for reasons such as infection, the pin tip 41 is pulled back to the hollow portion 25 side and then extracted.

  As mentioned above, although preferred embodiment which concerns on this invention was illustrated, this invention is not limited to embodiment mentioned above, It cannot be overemphasized that it can be made arbitrary, unless it deviates from the summary of this invention.

  For example, in the above-described embodiment, the outer peripheral surface 232 of the main body 2 of the fixture 1 is a curved surface, but the shape of the outer peripheral surface 232 is not limited to a curved surface. A threaded portion can be formed on 232.

  In the above-described embodiment, the configuration in which the push-out member 5 has the region S has been described as an example. However, the configuration of the push-out member 5 can push each of the plurality of pins 4 outward. As long as the region S is included, the configuration is not limited. As another structure of the extrusion member 5, for example, a tapered shape whose diameter increases from the front end portion 51 to the rear end portion 52 of the extrusion member 5 can be cited.

  In the above-described embodiment, the concave portion 27 located at the bottom 24 of the main body 2 is conical, but the concave portion 27 can be formed in another shape instead. Examples of the other shape of the recess 27 include a female screw shape. When the concave portion 27 is formed into a female screw shape, the distal end portion 51 of the pushing member 5 may be formed into a male screw shape that can be screwed into the female screw-shaped concave portion 27.

  In the embodiment described above, the configuration in which the pullback member 6 has the engagement piece 6A has been described as an example. However, the configuration of the pullback member 6 is engaged with the pin rear end portion 42 and is connected to the pin tip portion 41. As long as it can be pulled back to the hollow portion 25 side, the configuration is not limited to the configuration having the engagement piece 6A. Other configurations of the pullback member 6 include, for example, a configuration in which a pressure-sensitive adhesive layer is provided on the front end side of the substantially rod-shaped member and is engaged with the pin rear end portion 42 side by the adhesiveness of the pressure-sensitive adhesive layer. .

DESCRIPTION OF SYMBOLS 1 Dental implant fixture 2 Main body part 21 Tip part 22 Rear end part 23 Side wall part 231 Inner peripheral surface 232 Outer peripheral face 24 Bottom part 25 Hollow part 26 Opening part 27 Recessed part 3 Pin insertion hole 4 Pin 41 Pin front end part 42 Pin rear end Part 43 Head 431 Reduced diameter part 1 ′ Fixture 2 ′ Body part 23 ′ Side wall part 232 ′ Outer peripheral surface 232 a Tapered region 10 Dental implant system 5 Pushing member 51 Tip part 52 Rear end part 6 Pulling back member 6A Engagement piece 61 Tip part 62 Rear end portion 63 Slit 64 Bending portion 65 Elastic member 66 Cap 661 Female screw portion 67 Male screw portion 68 Case 7 Abutment 100 Alveolar bone

Claims (15)

A substantially cylindrical main body with a bottom;
A pin insertion hole penetrating between the inner peripheral surface and the outer peripheral surface of the side wall of the main body,
A dental implant fixture, comprising: a pin inserted through the pin insertion hole in a state in which a tip of the pin can protrude outward from the outer peripheral surface.   The dental implant fixture according to claim 1, wherein the pin has a head connected to a pin rear end portion and having an outer diameter larger than an inner diameter of the pin insertion hole.   The fixture for dental implants according to claim 1 or 2, comprising a plurality of the pin insertion holes, wherein the plurality of pin insertion holes are spaced from each other along the longitudinal direction of the main body.   The dental implant fixture according to any one of claims 1 to 3, comprising a plurality of the pin insertion holes, wherein the plurality of pin insertion holes are spaced from each other along a circumferential direction of the main body portion. Char.   5. The plurality of pin insertion holes are provided, and the plurality of pin insertion holes have rotational symmetry with respect to a central axis of the main body portion in a cross-sectional view perpendicular to the longitudinal direction of the main body portion. The fixture for dental implants in any one of.   The fixture for dental implants according to any one of claims 1 to 5, wherein the outer peripheral surface has a curved shape.   The dental implant fixture according to claim 6, further comprising a coating layer laminated on the outer peripheral surface.   The said outer peripheral surface is located in the front-end | tip part side of the said main-body part, and has a taper area | region where the outer diameter of the said main-body part becomes small as it goes to the said front-end | tip part. Fixture for dental implant. The fixture for dental implants according to any one of claims 1 to 8,
A dental implant system comprising: a substantially rod-shaped push-out member that is inserted into a hollow portion surrounded by a bottom portion of the main body portion and the inner peripheral surface and pushes the pin outward.   The dental implant system according to claim 9, wherein the push member has a region in which a radius of the push member gradually increases along a circumferential direction in a cross-sectional view perpendicular to the longitudinal direction of the push member.   The dental implant system according to claim 9 or 10, wherein when the pushing member is inserted into the hollow portion, a central axis of the pushing member is coaxial with a central axis of the main body portion.   The dental implant according to any one of claims 9 to 11, further comprising a pull-back member that is inserted into the hollow portion and engages with a pin rear end side of the pin and pulls the pin tip portion back to the hollow portion side. system.   The dental implant system according to claim 12, wherein the pull-back member has a slit that sandwiches the pin rear end side. The fixture for dental implants according to any one of claims 1 to 8,
And a structural component attached to a rear end portion of the body portion of the dental implant fixture.   A substantially rod-like pushing member that is inserted into a hollow portion surrounded by a bottom portion of the main body portion and the inner peripheral surface and pushes the pin outward is further provided in a state of being attached to the structural component. 14. Dental implant according to 14.

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