JP2004057729A - Orthodontic implant - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an orthodontic implant which is easily adjustable, does not require welding a wire, and can use titanium or a titanium alloy. <P>SOLUTION: An implant body has an engaging hole. An anchor head 20 can be engaged with the engaging hole of the implant body 10 and has an engaging projection with a through hole at the center and two tapped through holes at the head part. A screw 30 has an outer circumferential face to be engageable to the inner face shape of the anchor head 20. A small screw 40 has a thread matching the tapped through hole in the head part of the anchor head 20 on the outer circumferential face. The end part of a wire is fixed to a tooth by inserting a wire (not shown in the figures) through a groove of the anchor head 20 engaged with the implant body 20 and fixed by the screw 30. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an orthodontic implant, and more particularly to an orthodontic implant that is easy to adjust and can use titanium or a titanium alloy.
[0002]
[Prior art]
Traditionally, orthodontic implants have welded a wire to an implant body that is screwed into the palatal bone and fixed the wire to the teeth.
[0003]
However, since it is necessary to perform welding, it is difficult to weld the wire, but there is a problem that it is difficult to use titanium or a titanium alloy having high compatibility with human body tissue.
[0004]
[Problems to be solved by the invention]
An object of the present invention is to provide an orthodontic implant that is easy to adjust and can use titanium or a titanium alloy without welding wires.
[0005]
[Means for Solving the Problems]
The orthodontic implant of the present invention includes an implant body screwed into the palate bone, an anchor head, a screw, a small screw, and a wire.
[0006]
The implant body has a thread with a notch on the outer periphery, an engagement hole on the base end side and coaxial with the axis of the thread, and a screw hole dug down from the bottom surface of the engagement hole to the distal end side. The anchor head has an engaging projection at a tip end, which is engageable with an engaging hole of the implant body and has a through hole in the center, and the through hole is narrower on the engaging protrusion side. Has a tapered inner surface that widens on the other end side, and has an annular groove on the outer peripheral surface, is separated by the groove, and the head that is opposite to the engagement protrusion has at least The screw has an outer peripheral surface capable of engaging with the inner surface shape of the anchor head, and has a tool hole for rotation at a proximal end thereof, The screw has a screw thread on its outer periphery that accommodates a through screw hole provided in the head of the anchor head, and The proximal end has a tool hole for rotation, engages the implant body, and secures one end of the wire with a small screw in the groove of the screw-fixed anchor head, thereby securing the end of the wire. The part has a shape that is fixed to the teeth.
[0007]
Furthermore, the inner surface of the engaging hole of the implant body preferably has a regular hexagonal cross section perpendicular to the axial direction, and the outer surface of the engaging protrusion of the anchor head preferably has a regular dodecagonal cross section perpendicular to the axial direction. .
[0008]
The impression coping according to the present invention has an end portion engageable with an engagement hole of the implant body, and has another end portion having a shape capable of engaging a tool, and the implant body of the orthodontic implant is provided. Used to screw into the palate bone.
[0009]
BEST MODE FOR CARRYING OUT THE INVENTION
The present invention will be described with reference to the drawings, but the illustrated embodiment is merely an example, and does not limit the present invention.
[0010]
FIG. 1 is a plan view and a side view showing an embodiment of the present invention, and FIG. 2 is a sectional view showing a use state. FIG. 3 is an assembled side view of one embodiment of the present invention.
[0011]
The orthodontic implant of the present invention includes an implant body 10 screwed into the palatal bone 1, an anchor head 20, a screw 30, a small screw 40, and a wire 4.
[0012]
The implant body 10 is shown in a projection view in FIG.
[0013]
The implant body 10 has a thread 13 having a notch 14 on the outer periphery, an engagement hole 12 on the base end side and coaxial with the axis of the thread 13, and a distal side from the bottom surface of the engagement hole 12. And a screw hole 11 that can be dug down. The implant body 10 has a size of, for example, φ3.7 mm × 7.7 mm.
[0014]
The anchor head 20 is shown in a projection view in FIG.
[0015]
The anchor head 20 is engageable with the engagement hole 12 of the implant body 10 (FIG. 4), and has an engagement protrusion 25 provided with a through hole 21 at the center at the tip, and the through hole 21 has a tapered portion 28. The tapered portion 28 has an inner surface that is narrower on the side of the engagement protrusion 25 and wider on the other end side, and has an annular groove 24 on the outer peripheral surface. The head, opposite to the engaging protrusion 25, has two through screw holes 22, 23. The anchor head 20 has a size of, for example, φ6.9 mm × 8.65 mm.
[0016]
The inner surface of the engaging hole 12 of the implant body 10 has a regular hexagonal section perpendicular to the axial direction, and the outer surface of the engaging projection 25 of the anchor head 20 has a regular dodecagonal section perpendicular to the axial direction. The direction of the anchor head 20 can be rotated by about 30 degrees at a time, and the adjustment of the wire 4 (FIG. 2) can be easily performed only by inserting and removing the anchor head 20.
[0017]
The screw 30 is shown in a projected view in FIG.
[0018]
The screw 30 has an outer peripheral surface that can be engaged with the inner surface shape of the anchor head 20 (FIG. 5), and has a tool hole 31 for rotation at a proximal end. The screw 30 has a size of, for example, φ2.0 (small diameter side φ1.4 mm) × 10.9 mm.
[0019]
The machine screw 40 is shown in a projection view in FIG.
[0020]
The machine screw 40 has a screw thread 42 on its outer periphery that accommodates the threaded screw holes 22 and 23 provided in the head of the anchor head 20 (FIG. 5), and has a proximal end portion for rotation. It has a tool hole 41. The small screw 40 has a size of, for example, φ1.8 mm × 2.0 mm.
[0021]
The wire 4 uses a bracket at the joint 3 with the teeth, and can be freely selected from, for example, dimensions of φ1.0 mm to φ2.5 mm.
[0022]
The anchor head 20 is fixed to the implant body 10 by screwing with a screw 30.
[0023]
The wire 4 is fixed in the groove of the anchor head 20 by being held down by a small screw 40.
[0024]
The distal end 3 of the wire 4 is shaped to be fixed to a tooth, so that the dentition can be corrected. Since the two wires 4 can be attached with the independent small screws 40, the orthodontics of the left and right dentitions can be adjusted independently. In addition, since it can be securely fixed only by tightening with the small screw 40 and can cope with the wires 4 having various outer diameters, the physical, mental and economic burden on the patient for orthodontics is reduced. Can be reduced. In addition, it is possible to obtain an effect that the burden on the dentist for unnecessary inventory management of the implant body can be reduced.
[0025]
Since welding and the like are not required for fixing the components to each other, it is possible to use titanium and a titanium alloy having high biocompatibility, and it is possible to minimize biological reactions.
[0026]
The impression coping 50 is shown in a projection view in FIG.
[0027]
The impression coping 50 of the present invention has an end 53 that can be engaged with the engagement hole 12 of the implant body 10 (FIG. 4), and has another end 52 that is capable of engaging with a tool. Used to screw the implant body 10 into the palate bone. Further, by providing a through hole 51 having the same shape as that of the anchor head 20, it is also possible to firmly fix the anchor head 20 with the screw 30 (FIG. 6).
[0028]
As shown in FIG. 9, the impression coping 50 is used for embedding the implant body 10, but can also be used as an impression coping.
[0029]
【The invention's effect】
ADVANTAGE OF THE INVENTION By this invention, it became easy to adjust and it became possible to provide the orthodontic implant which can use titanium or a titanium alloy, without welding a wire.
[Brief description of the drawings]
FIG. 1 is a plan view and a side view showing an embodiment of the present invention.
FIG. 2 is a sectional view showing a use state.
FIG. 3 is an assembled side view of one embodiment of the present invention.
FIG. 4 is a projection view showing an implant body.
FIG. 5 is a projection view showing an anchor head.
FIG. 6 is a projection view showing a screw.
FIG. 7 is a projection view showing a machine screw;
FIG. 8 is a projection view showing an impression coping.
FIG. 9 is a side view showing a state in which an impression coping is used.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Palate 2 Teeth 3 Bracket 4 Wire 10 Implant body 11 Thread part 12 Engagement hole 13 Thread 14 Self-tapping notch 20 Anchor head 21, 22, 23 Through hole 24 Groove 25 Engagement projection 27 Thread part 28 Taper part 30 Screw 31 Tool hole 32 Thread 33 Taper portion 40 Machine screw 41 Tool hole 42 Thread 50 Impression coping 51 Through hole 52 Flat surface 53 Engagement protrusion 54 Taper portion

Claims (3)

An orthodontic implant comprising an implant body screwed into a palate bone, an anchor head, a screw, a small screw, and a wire, wherein the implant body has a thread with a notch on its outer periphery, An engagement hole at the end side, coaxial with the axis of the screw thread, and a screw hole dug down from the bottom surface of the engagement hole to the distal end side, wherein the anchor head is provided in the engagement hole of the implant body. Engageable, having an engagement projection with a through hole in the center at the tip, the through hole has a tapered inner surface that is narrow on the engagement projection side and wide on the other end side, And, having an annular groove on the outer peripheral surface and having at least two threaded through holes in a head section which is separated by the groove and which is on the opposite side to the engagement protrusion, the screw is provided on the anchor head. Having an outer peripheral surface engageable with the inner surface shape, A tool hole for rotation at an end on the base end side, wherein the small screw has a screw thread on its outer periphery adapted to a through screw hole provided on the head of the anchor head, and By having a tool hole for rotation at the side end, engaging the implant body and fixing one end of the wire with a small screw in the groove of the anchor head fixed with a screw, the end of the wire is An orthodontic implant having a shape fixed to a tooth. The inner surface of the engaging hole of the implant body has a regular hexagonal cross section perpendicular to the axial direction, and the outer surface of the engaging projection of the anchor head has a regular dodecagonal cross section perpendicular to the axial direction. An orthodontic implant according to claim 1. Having an end engageable with an engagement hole of the implant body, and having another end shaped to engage a tool, and having an impression coping for screwing the implant body into the palate bone. The orthodontic implant according to claim 1, characterized in that:

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