WO2016056123A1

WO2016056123A1 - Implant, fixture and abutment

Info

Publication number: WO2016056123A1
Application number: PCT/JP2014/077204
Authority: WO
Inventors: 石渡暉夫
Original assignee: 株式会社ナントー
Priority date: 2014-10-10
Filing date: 2014-10-10
Publication date: 2016-04-14

Abstract

An implant (5) is provided with a fixture (10) to be embedded into bone and an abutment (20) which is inserted into the fixture (10). Individual piece identification information (N, N1, N2) given to each individual piece is printed on the fixture (10) and/or the abutment (20). The individual piece identification information (N, N1, N2) is printed at the tip (11) of the fixture (10) or a main body part (21) of the abutment (20). The individual piece identification information (N, N1, N2) is imprinted by laser processing.

Description

Implants, fixtures, abutments

The present invention relates to an implant, a fixture, and an abutment. For example, the present invention relates to a dental implant that is embedded in a jaw bone in the case of a root defect of a permanent tooth.

Implants embedded in the body (particularly dental implants) have attracted attention. A dental implant is fixed in a hole provided in an alveolar bone when the root of a permanent tooth is lost due to decay or damage.
This dental implant is composed of a fixture (artificial tooth root) fixed to the alveolar bone and an abutment (abutment) screwed to the fixture. An implant crown (artificial dental crown) is attached to the abutment.

JP 2004-113718 A

It is known to use dental treatment records (treatment marks) to confirm the identity of unidentified persons such as unidentified bodies. If the body is damaged, the teeth are likely to remain. For this reason, accurate identification can be performed by comparing (collating) the oral photographs or X-rays of the corpse taken by the investigating agency with the dental treatment records (medical charts, X-rays) stored by the dentist. it can.

However, the collation operation of the dental treatment record requires an operation of visually confirming the medical records and the like. It is not easy to find a medical record or the like matching a treatment mark of an unidentified person from a large amount of treatment records. In addition, since the description format of the chart is not uniform, even if the chart of an unidentified person is stored, this chart may be overlooked.
In view of this, the introduction of electronic medical records with a unified (standardized) description format for dental treatment records has been studied, but it has not been realized due to various problems.

In addition, with the advancement of dental medical technology and the diversification of physical distribution, there is an increasing interest in the safety of implants and the like. Therefore, in order to establish safer and safer dentistry, it is required to realize traceability in dentistry.
However, for example, when a patient becomes unidentified or when a medical institution discards a medical record or the like, there is a problem that traceability is interrupted. That is, there is a problem that traceability from the implant itself cannot be secured.

An object of the present invention is to provide an implant, a fixture, and an abutment capable of reliably and accurately performing traceability (tracking of the manufacturing / distribution history of articles).
For example, it is to provide an implant, a fixture, and an abutment that can easily and accurately perform a collation operation of a dental treatment record when confirming the identity of an unidentified person.

A first embodiment of the implant of the present invention is an implant including a fixture embedded in a bone and an abutment inserted into the fixture, and one or both of the fixture and the abutment are provided for each individual. The individual identification information given to is marked.

The second embodiment of the implant of the present invention is characterized in that, in the first embodiment, the individual identification information marked on the fixture and the individual identification information marked on the abutment are the same.

The third embodiment of the implant of the present invention is characterized in that, in the first embodiment, the individual identification information marked on the fixture is different from the individual identification information marked on the abutment.

The fourth embodiment of the fixture according to the present invention is characterized in that, in any of the first to third embodiments, the individual identification information is stamped by laser processing.

The fifth embodiment of the fixture according to the present invention is characterized in that, in any one of the first to fourth embodiments, the individual identification information is encoded and marked with an identifier representing a number or a character.

The first embodiment of the fixture of the present invention is a fixture embedded in a bone, and is characterized in that individual identification information given to each individual is marked on the tip exposed from the bone.

The second embodiment of the fixture according to the present invention is characterized in that, in the first embodiment, the individual identification information is marked on a distal end surface of the distal end portion facing away from the bone embedded in the bone. To do.

A first embodiment of the abutment according to the present invention is an abutment that is inserted into a fixture embedded in a bone and to which an artificial crown is attached, and an individual body is provided on a body portion excluding a shaft portion that is inserted into the fixture. It is characterized in that individual identification information given every time is marked.

The second embodiment of the abutment according to the present invention is characterized in that, in the first embodiment, the individual identification information is marked on an exposed surface of the main body portion excluding a portion covered with the artificial dental crown. To do.

According to the implant, fixture, and abutment of the present invention, traceability can be reliably and accurately performed. For example, when verifying the identity of an unidentified person, it is possible to easily and accurately check the tooth treatment record.

It is a figure which shows the implant which concerns on embodiment of this invention. It is a disassembled perspective view of the implant which concerns on embodiment of this invention. It is a longitudinal cross-sectional view of the implant which concerns on embodiment of this invention. 2A and 2B are diagrams showing a fixture, where FIG. 1A is a top view and FIG. 1B is a longitudinal sectional view (IVb-IVb cross section). It is a figure which shows an abutment, Comprising: It is (a) side view, (b) bottom view, (c) longitudinal cross-sectional view (Vc-Vc cross section). It is a figure which shows a clamper pin, Comprising: It is (a) side view and (b) bottom view. It is a figure which shows a clamper, Comprising: It is (a) bottom view, (b) longitudinal cross-sectional view (VIIb-VIIb cross section). It is a figure which shows a lock nut, Comprising: (a) Bottom view, (b) Longitudinal section (VIIIb-VIIIb section).

Embodiments of the present invention will be described with reference to the drawings. The various dimensions shown in the following description are examples.

[Dental implant]
FIG. 1 is a view showing an implant 5 according to an embodiment of the present invention.

The implant 5 is a dental implant used in the dental field.
The implant 5 includes a fixture 10 that is fixed to the alveolar bone (bone) 2 and an abutment unit 8 that is fitted into the fixture 10.

The center axis (longitudinal direction) of the implant 5 is taken as the Z axis (Z direction, depth direction, axial direction, vertical). Of the Z-axis, the fixture 10 side is the + Z side (+ Z direction), and the abutment 20 side is the −Z side (−Z direction). The bottom view is when viewed from the + Z direction, and the top view is when viewed from the -Z direction. The end in the + Z direction is called the base end (first end), and the end in the −Z direction is called the front end (second end).

A male screw 12 is formed on the base end side of the fixture 10. The fixture 10 is fixed to the alveolar bone 2 by screwing the male screw 12 into a hole formed in the alveolar bone (bone) 2.
An artificial dental crown 6 is attached to the abutment unit (abutment 20) 8 using an adhesive or the like.

The proximal end side (male screw 12) of the fixture 10 is buried in the alveolar bone 2. The distal end portion 11 (particularly, the distal end surface 11T) of the fixture 10 is exposed from the alveolar bone 2 and covered with the alveolar bone 2.
A part (exposed surface 21T) of the abutment unit 8 (abutment 20) is exposed between the alveolar bone 2 and the artificial dental crown 6 and covered with the alveolar bone 2.

FIG. 2 is an exploded perspective view of the implant 5 according to the first embodiment of the present invention.
FIG. 3 is a longitudinal sectional view of the implant 5 according to the first embodiment of the present invention.

The implant 5 includes a fixture 10 and an abutment unit 8.
The abutment unit 8 is an assembly of the abutment 20, the clamper pin 30, the clamper 40, and the lock nut 50.
The abutment unit 8 includes a shaft-shaped abutment 20, a shaft-shaped clamper pin 30, a ring-shaped clamper 40, and a lock nut 50.
An artificial crown 6 is attached to the abutment 20.
The clamper pin 30 is inserted into the through hole 24 of the abutment 20 and engages with the fixture 10.
The clamper 40 is fitted to the clamper pin 30.
The lock nut 50 is screwed (locked) to the abutment 20 and the clamper pin 30.

4A and 4B are diagrams showing the fixture 10, wherein FIG. 4A is a top view and FIG. 4B is a longitudinal sectional view (IVb-IVb cross section).
The fixture 10 is an axial member formed of a ceramic material such as zirconia. The fixture 10 is formed in a cylindrical shape, and a male screw 12 is formed on the outer peripheral surface thereof.
A center hole 13 is opened at the center of the end face on the −Z side of the fixture 10. In the center hole 13, a tapered hole portion 14, a reverse tapered hole portion 15, and an engagement hole portion 16 are continuously formed toward the + Z side.
The inner diameter of the tapered hole portion 14 is gradually reduced (reduced) from the end surface on the −Z side toward the + Z side. The reverse tapered hole portion 15 gradually increases (increases in diameter) toward the + Z side. The engaging hole portion 16 is formed with two parallel surfaces 16A composed of two parallel inner surfaces facing each other.

The taper angle of the taper hole 14 is, for example, 8 °. The average diameter of the tapered hole portion 14 is, for example, 2 mm. The length (depth) of the tapered hole portion 14 is formed to be 1/3 or more (for example, 4 to 5 mm) of the entire length (for example, 10 mm) of the fixture 10.
A plurality of protrusions 17 are formed along the Z direction on the inner peripheral side surface of the tapered hole portion 14. The plurality of protrusions (rotation prevention hole portions) 17 are arranged at equal intervals (equal angles) in the circumferential direction of the center hole 13. The number of protrusions 17 is five. The number of protrusions 17 can be changed as appropriate.
The shape of the cross section perpendicular to the Z-axis of the protrusion 17 is a shape in which the top side (outer peripheral side) swells in a semicircular shape.

The minimum inner diameter of the reverse tapered hole 15 is smaller than the minimum inner diameter of the tapered hole 14. Therefore, a protruding portion (a retaining hole) 15A that protrudes to the inner peripheral side of the center hole 13 is formed at a connection portion between the tapered hole portion 14 and the reverse tapered hole portion 15. The taper angle of the reverse taper hole 15 is, for example, 10 °. The length (depth) of the reverse taper hole 15 is, for example, 2.5 mm.

The engaging hole portion 16 is composed of two opposing arc-shaped inner peripheral side surfaces and two parallel and opposing inner side surfaces. The two inner surfaces are parallel two surfaces 16A. The length (depth) of the engagement hole 16 is, for example, 1.2 mm. The width (two surface widths) of the two parallel two surfaces 16A is, for example, 1.1 mm.

Individual identification information N 1 is marked on the outer surface 10 S of the fixture 10.
The outer surface 10 S is a region of the fixture 10 excluding the center hole 13. That is, the outer surface 10 S includes the distal end portion 11 and the male screw 12.
The individual identification information N1 is stamped on an area of the outer surface 10S of the fixture 10 excluding the male screw 12. That is, the individual identification information N1 is imprinted on the distal end portion 11 exposed from the alveolar bone 2. Specifically, the individual identification information N1 is imprinted on the distal end surface 11T facing away from the direction embedded in the alveolar bone 2 (+ Z direction). In other words, the individual identification information N1 is stamped on the front end surface 11T facing the −Z direction.

The individual identification information N1 is imprinted on an arbitrary region of the tip portion 11 (tip surface 11T). The area where the individual identification information N1 is imprinted may be one place or a plurality of places. The size of the individual identification information N1 (area of the marking area) is arbitrary.

The individual identification information N1 is stamped using a laser processing machine.
The fixture 10 is formed by machining a material of titanium or a titanium alloy such as lathe. The individual identification information N1 is marked by irradiating and engraving the tip portion 11 (tip surface 11T) of the fixture 10 with a laser beam.

The fundamental wave of the solid laser is used for the laser beam. For example, a fundamental wave of Nd: YAG laser or YVO4 laser (solid laser: wavelength 1064 nm, fiber laser: 1090 nm) can be used. The light diameter (diameter) of the laser light is, for example, 5 to 50 μm.

The tip portion 11 (tip surface 11T) is engraved by irradiating the tip portion 11 (tip surface 11T) of the fixture 10 with laser light in the air. As a result, the individual identification information N1 is stamped on the tip portion 11 (tip surface 11T).

The reason why the individual identification information N1 is imprinted on the fixture 10 is to make it possible to identify the patient wearing the fixture 10 (implant 5). That is, when a patient who has embedded the fixture 10 (implant 5) becomes an unidentified person such as an unidentified body, identification can be performed based on the individual identification information N1 stamped on the fixture 10. It becomes. This is because the individual identification information N1 stamped on the fixture 10 is transferred to a dental treatment record (medical chart) stored by the dentist.

The individual identification information N1 is information that is given to the fixture 10 for each individual. For example, the individual identification information N1 is a so-called manufacturing number (such as a serial number). That is, the numbers, symbols, characters, and the like for the manufacturer to manage the fixture 10 individually.
The individual identification information N1 may be a number or a symbol that is different from the manufacturing number. The production number and the individual identification information N1 may be stamped on the fixture 10 separately. That is, the individual identification information N1 only needs to be given a different number, symbol, or the like for each individual of the fixture 10.
The individual identification information N1 is printed as “NANTOH F12345”, for example. “NANTOH” is manufacturer information of the fixture 10. “F” means fixture. “12345” is a manufacturing number (serial number). The date of manufacture may be added to the individual identification information N1.

Since the fixture 10 is fixed to the alveolar bone 2, the possibility of being removed is very low. For this reason, it is excellent as a means for identifying an individual.
The distal end portion 11 of the fixture 10 is exposed from the alveolar bone 2. In particular, the distal end surface 11T is exposed from the alveolar bone 2. For this reason, the individual identification information N1 can be visually recognized by removing or withdrawing the gum 4. Since it is not necessary to remove the fixture 10 from the alveolar bone 2, the individual identification information N1 can be easily viewed.
Note that a magnifying glass, a microscope, or the like may be used for visual recognition of the individual identification information N1.

The manufacturer of the fixture 10 stores an individual identification information management ledger of the fixture 10.
In this individual identification information management ledger, information such as type, date of manufacture, sales destination (sales agency, medical institution), date of sales, etc. is recorded in association with the manufacturing number of the fixture 10.

5A and 5B are diagrams showing the abutment 20, which are (a) a side view, (b) a bottom view, and (c) a longitudinal sectional view (Vc-Vc cross section).
The abutment 20 includes a main body portion 21 and a tapered shaft portion 22.
An artificial dental crown 6 is attached to the main body 21. The taper shaft portion (fitting shaft portion) 22 extends from the base end side (+ Z side) of the main body portion 21 and is inserted into the center hole 13 of the fixture 10.
The abutment 20 is integrally formed of a white ceramic material having excellent aesthetics. Zirconia is adopted as the ceramic material.

The taper angle of the taper shaft portion 22 is, for example, 8 °. The angle is the same as that of the tapered hole portion 14 of the center hole 13 of the fixture 10.
The average inner diameter of the tapered shaft portion 22 is, for example, 2 mm. The length of the tapered shaft portion 22 is the same as or longer than that of the tapered hole portion 14. The length of the taper shaft portion 22 is, for example, 6 mm.
A plurality of groove portions 23 are formed on the outer peripheral side surface of the tapered shaft portion 22 along the Z direction. The plurality of groove portions (anti-rotation shaft portions) 23 are arranged at equal intervals (equal angles) in the circumferential direction of the taper shaft portion 22. The number of the groove parts 23 is five. The number of the groove parts 23 can be changed as appropriate. The number of the groove portions 23 is the same as the number of the protrusions 17 of the tapered hole portion 14.
The cross-sectional shape orthogonal to the Z-axis of the groove 23 is a shape in which the bottom side (inner peripheral side) is recessed in a semicircular arc shape. That is, the groove portion 23 has a shape opposite to that of the protrusion 17 formed on the inner peripheral side surface of the tapered hole portion 14.

When the abutment 20 is inserted into the center hole 13 of the fixture 10, the tapered shaft portion 22 of the abutment 20 is fitted into the tapered hole portion 14 of the center hole 13 of the fixture 10. At this time, the five groove portions 23 formed in the tapered shaft portion 22 are inserted into the five protrusions 17 formed in the tapered hole portion 14.

A through hole 24 penetrating in the Z direction is formed at the center of the abutment 20. The part corresponding to the main body portion 21 in the through hole 24 is formed with an inner diameter of about 2.5 mm. An inner screw (female screw) 25 of M2.5 is provided in a part of the through hole 24. The screw size of the inner screw 25 can be appropriately changed according to the inner diameter of the through hole 24 and the like.
A portion of the through hole 24 corresponding to the tapered shaft portion 22 has an inner diameter of, for example, 1 mm. The clamper pin 30 is inserted into the through hole 24 with almost no gap.

Individual identification information N2 is marked on the outer surface 20S of the abutment 20.
The outer surface 20 S is a region of the abutment 20 excluding the through hole 24. That is, the outer surface 20 S includes outer peripheral surfaces of the main body portion 21 and the tapered shaft portion 22.
The individual identification information N2 is stamped on a region of the outer surface 20S of the abutment 20 excluding the tapered shaft portion 22. That is, the individual identification information N2 is stamped on the outer peripheral surface of the main body 21. Specifically, the individual identification information N2 is stamped on the exposed surface 21T of the main body 21 excluding the area covered with the artificial crown 6. That is, the individual identification information N2 is imprinted on the exposed surface 21T exposed between the fixture 10 and the artificial dental crown 6 in the outer surface 20S of the abutment 20.

The individual identification information N2 is stamped on an arbitrary area of the main body 21 (exposed surface 21T). The area where the individual identification information N2 is imprinted may be one place or a plurality of places. The size of the individual identification information N2 (the area of the marking area) is arbitrary.

The individual identification information N2 is stamped using a laser processing machine. That is, the individual identification information N2 is stamped by the same method as the individual identification information N1.

The reason for marking the individual identification information N2 on the abutment 20 is the same as the reason for marking the individual identification information N1 on the fixture 10. That is, when the patient wearing the abutment 20 becomes an unidentified person such as an unidentified body, it is possible to confirm the identity based on the individual identification information N1 stamped on the abutment 20. This is because the individual identification information N1 stamped on the abutment 20 is transferred to a dental treatment record (medical chart) stored by the dentist.

The individual identification information N2 is information given to each abutment 20 for each individual. For example, the individual identification information N2 is a so-called manufacturing number (such as a serial number). That is, the numbers, symbols, characters, etc. for the manufacturer to manage the individual abutments 20.
Similar to the individual identification information N1, the individual identification information N2 may be a number, a symbol, or the like different from the manufacturing number. The production number and the individual identification information N2 may be stamped on the abutment 20 separately. That is, the individual identification information N2 only needs to be given a different number or symbol for each individual of the abutment 20.

The individual identification information N2 is printed, for example, “NANCERA A12345”. “NANCERA” is manufacturer information of the abutment 20. “F” means an abutment. “12345” is a manufacturing number (serial number). The date of manufacture may be added to the individual identification information N2.

Since the abutment 20 is attached to the fixture 10 fixed to the alveolar bone 2, there is a possibility that the abutment 20 is removed (replaced). However, the possibility of being removed is very low. For this reason, it is excellent as a means for identifying an individual.
The main body 21 of the abutment 20 is exposed from the alveolar bone 2. For this reason, the individual identification information N2 can be visually recognized by removing or removing the gums 4.
In particular, the exposed surface 21T is exposed not only from the alveolar bone 2 but also from the artificial crown 6. For this reason, visual recognition of the individual identification information N2 can be performed easily.
Note that a magnifying glass, a microscope, or the like may be used for visual recognition of the individual identification information N2.

The manufacturer of the abutment 20 stores an individual identification information management ledger for the abutment 20.
In this individual identification information management ledger, information such as type, date of manufacture, sales destination (sales agency, medical institution), date of sale, etc. is recorded in association with the manufacturing number of the abutment 20.

6A and 6B are diagrams showing the clamper pin 30, wherein FIG. 6A is a side view and FIG. 6B is a bottom view.
The clamper pin 30 is an elongated shaft-shaped member. The clamper pin 30 is made of titanium or a titanium alloy. The diameter of the clamper pin 30 is, for example, 1 mm.
The clamper pin 30 includes an elongated main body 30A and an engagement portion 31 formed on the base end side (+ Z side) of the main body 30A. The diameter of the main body 30A is, for example, 1 mm. The engaging portion 31 is fitted into the engaging hole portion 16 formed at the deepest portion of the center hole 13 of the fixture 10.
The engaging part 31 is composed of a tapered part 31A and two parallel surfaces 31B. The outer diameter of the tapered portion (retaining shaft portion) 31A gradually increases (expands) toward the + Z side. The parallel two surfaces 31B are two outer surfaces that are formed on the outer surface of the tapered portion 31A and are parallel and facing backward. The angle of the tapered portion 31A is about 30 °. The width (two-surface width) of the parallel two surfaces 31B is, for example, 1.1 mm.

An external thread (male thread) 32 of M1 is provided on the tip end side (−Z side) of the clamper pin 30. The screw size of the external screw 32 can be appropriately changed according to the diameter of the clamper pin 30 and the like.
The length of the clamper pin 30 is such that when the implant 5 is assembled, the outer screw 32 is substantially in the same position as the inner screw 25 at the end (−Z side) of the through hole 24 of the abutment 20.

7A and 7B are diagrams showing the clamper 40, where FIG. 7A is a bottom view and FIG. 7B is a longitudinal sectional view (VIIb-VIIb cross section).
The clamper 40 is a ring-shaped member. The clamper 40 is made of titanium or a titanium alloy. The outer diameter of the clamper 40 is, for example, 1.5 mm. The outer diameter of the clamper 40 is slightly smaller than the minimum inner diameter of the reverse tapered hole portion 15 of the center hole 13 of the fixture 10. The outer diameter of the clamper 40 may be slightly larger than the minimum inner diameter of the reverse tapered hole portion 15 and may be inserted into the reverse tapered hole portion 15.
The inner diameter of the clamper 40 is, for example, 1 mm. The inner diameter of the clamper 40 is fitted on the clamper pin 30. The clamper 40 is disposed at a position where it is caught by the engaging portion 31 of the clamper pin 30.
The clamper 40 is disposed so as to be received in the reverse tapered hole portion 15 of the center hole 13 of the fixture 10 when the implant 5 is assembled.

In the clamper 40, three comb teeth 41 are formed on the base end side (+ Z side). The number of the comb teeth 41 can be changed as appropriate. When the clamper 40 rides on the engaging portion 31 of the clamper pin 30, the comb teeth 41 are elastically deformed and spread toward the outer peripheral side. The comb teeth 41 of the clamper 40 operate in the same manner as a so-called collet chuck.
When the comb teeth 41 of the clamper 40 spread toward the outer peripheral side, the diameter becomes larger than the minimum inner diameter of the tapered hole portion 14. The clamper 40 is hooked (intervenes) at the projecting portion 15A projecting to the inner peripheral side at the upper end of the reverse tapered hole portion 15 of the center hole 13 of the fixture 10. Thereby, the movement of the clamper 40 and the clamper pin 30 to the −Z side is restricted.

FIGS. 8A and 8B are views showing the lock nut 50, where FIG. 8A is a bottom view and FIG. 8B is a longitudinal sectional view (VIIIb-VIIIb cross section).
The lock nut 50 is a ring-shaped member. The lock nut 50 has an outer screw 51 of M2.5 on the outer peripheral surface and an inner screw 52 of M1 on the inner peripheral surface. The lock nut 50 is formed of titanium or a titanium alloy. The screw dimensions of the outer screw 51 and the inner screw 52 can be appropriately changed corresponding to the inner screw 25 and the outer screw 32.
A pair of wrench grooves 53 having two parallel and back surfaces are provided on the end surface of the lock nut 50 on the −Z side. A lock nut 50 can be rotated by engaging an unillustrated instrument (such as a wrench) with the two parallel surfaces of the wrench groove 53.
The outer screw 51 is screwed into an inner screw 25 formed in a part of the through hole 24 of the abutment 20. The inner screw 52 is screwed to the outer screw 32 formed on the tip side (−Z side) of the clamper pin 30. When the lock nut 50 is rotated clockwise while the implant 5 is assembled, the clamper pin 30 moves to the −Z side with respect to the abutment 20.

(Two implant treatment methods (a treatment method that requires two operations))
The assembly of the implant 5 is performed according to the following procedure.

(First surgery)
First, the fixture 10 is implanted in the patient's alveolar bone 2.
When the fixture 10 is embedded in the alveolar bone 2, an implant mount driver (not shown) is used.
Since the male screw 12 of the fixture 10 has a threading function, the fixture 10 is embedded while cutting a screw directly into the alveolar bone 2. For this reason, the operation time can be shortened, and reliable initial fixation can be obtained.

After embedding the fixture 10 in the alveolar bone 2, the gums 4 are sewn together. The alveolar bone 2 and the fixture 10 are brought into close contact with the bone over about 3 to 6 months, although there are individual differences.

When the fixture 10 is embedded in the alveolar bone 2, the dentist transcribes the individual identification information N1 of the fixture 10 into the patient's medical record.
The individual identification information N1 of the fixture 10 is also described in a packaging container (not shown) of the fixture 10. A sticker on which the individual identification information N1 is printed is attached to the packaging container. The dentist peels off the seal on which the individual identification information N1 is printed from the packaging container and attaches it to the patient's chart.
Various patient information is described in the patient chart in addition to the individual identification information N1.

The medical chart may be an electronic medical chart. In addition to the individual identification information N1, a barcode symbol associated with the individual identification information N1 may be printed on the packaging container of the fixture 10. The bar code symbol may be read by a scanner, and the individual identification information N1 may be recorded on the electronic medical record.

(Preparation for the second surgery)
Separately from the fixture 10, the abutment unit 8 is assembled. The abutment unit 8 is assembled by the abutment 20, the clamper pin 30, the clamper 40 and the lock nut 50. The abutment unit 8 is sold in an assembled form.

In assembling the abutment unit 8, first, the clamper 40 is externally fitted to the clamper pin 30. Next, the lock nut 50 is attached to the abutment 20. The outer screw 51 of the lock nut 50 is screwed into the inner screw 25 formed in a part of the through hole 24 of the abutment 20.

Next, the clamper pin 30 is inserted from the + Z side of the through hole 24 of the abutment 20. When the tip end side (−Z side) of the clamper pin 30 comes into contact with the lock nut 50 attached to the abutment 20, the clamper pin 30 is rotated clockwise. By the clockwise rotation of the clamper pin 30, the outer screw 32 of the clamper pin 30 is screwed into the inner screw 52 of the lock nut 50. The clamper pin 30 is rotated clockwise until immediately before the tip end side (−Z side) of the clamper 40 fitted on the clamper pin 30 contacts the −Z side end of the abutment 20.
Thereby, the assembly of the abutment unit 8 is completed.

(Second surgery)
The abutment unit 8 is inserted into the center hole 13 of the fixture 10 embedded in the alveolar bone 2 of the patient. The tapered shaft portion 22 of the abutment 20 is fitted into the tapered hole portion 14 of the center hole 13 of the fixture 10 in a wedge shape.
The engagement portion 31 on the base end side (+ Z side) of the clamper pin 30 is inserted into the engagement hole portion 16 on the deepest portion (+ Z side) of the center hole 13 of the fixture 10. The parallel two surfaces 31B of the engaging portion 31 of the clamper pin 30 and the parallel two surfaces 16A of the engaging hole portion 16 of the fixture 10 are in close contact (fitting).

Next, a tool (not shown) (such as a wrench) is fitted in the wrench groove 53 of the lock nut 50 and rotated clockwise. The lock nut 50 moves while rotating in the + Z direction. At the same time, the clamper pin 30 moves in the −Z direction.
At this time, since there is a difference in the pitch between the outer screw 51 and the inner screw 52 of the lock nut 50 (M2.5: 0.35P, M1: 0.2P), compared to the amount of movement of the lock nut 50 in the + Z direction. The amount of movement of the clamper pin 30 in the −Z direction increases.
Since the engaging portion 31 of the clamper pin 30 is inserted into the engaging hole portion 16 of the fixture 10, the parallel two surfaces 31 B of the engaging portion 31 and the parallel two surfaces 16 A of the engaging hole portion 16 are in close contact (fitting). The rotation of the clamper pin 30 is restricted (suppressed). The clamper pin 30 does not rotate with the lock nut 50 and moves in the −Z direction.

When the clamper pin 30 is moved in the −Z direction, the tip end side (−Z side) of the clamper 40 fitted on the clamper pin 30 comes into contact with the + Z side end of the abutment 20, and the clamper 40 moves in the + Z direction. Is regulated (deterred).
When the clamper pin 30 is further moved in the + Z direction, the tapered portion 31A of the engaging portion 31 of the clamper pin 30 is inserted into the inner peripheral side of the clamper 40 (the clamper 40 rides on the tapered portion 31A). Thereby, the three comb teeth 41 on the + Z side of the clamper 40 are elastically deformed and spread toward the outer peripheral side.
Therefore, the clamper 40 is caught by the protruding portion 15A protruding to the inner peripheral side at the upper end of the reverse tapered hole portion 15 of the center hole 13 of the fixture 10, and the movement of the clamper 40 and the clamper pin 30 to the −Z side is restricted.

In a state where movement of the clamper 40 and the clamper pin 30 to the −Z side is restricted, the lock nut 50 is further rotated clockwise. As a result, the abutment 20 moves in the + Z direction. The abutment 20 further moves toward the fixture 10, and the tapered shaft portion 22 of the abutment 20 is further inserted in a wedge shape into the tapered hole portion 14 of the center hole 13 of the fixture 10.

In this way, the implant 5 is assembled robustly without rattling.
Thereafter, the artificial dental crown 6 is attached to the −Z side outer peripheral surface of the abutment 20 of the implant 5 using an adhesive or the like.

When the abutment unit 8 is attached to the fixture 10, the dentist transcribes the individual identification information N2 of the abutment 20 to the patient's chart.
The individual identification information N2 of the abutment 20 is also described in a packing container (not shown) of the abutment unit 8. A sticker on which the individual identification information N2 is printed is attached to the packing container. The dentist peels off the seal on which the individual identification information N2 is printed from the packing container and attaches it to the patient's chart.
Various patient information is described in the patient chart in addition to the individual identification information N2.

The medical chart may be an electronic medical chart. In addition to the individual identification information N2, a barcode symbol associated with the individual identification information N2 may be printed on the packing container of the abutment 20. The bar code symbol may be read by a scanner, and the individual identification information N2 may be recorded on the electronic medical record.

In the implant 5, individual identification information N 1 and N 2 given to each individual is marked on both the fixture 10 and the abutment 20.
Therefore, when the patient in which the implant 5 is implanted becomes an unidentified person such as an unidentified body, the individual identification information N1 stamped on the fixture 10 or the individual identification information N2 stamped on the abutment 20 is used. It is possible to confirm the identity.

When verifying the identity of an unidentified person, it is sufficient to collate the individual identification information N1 and N2 such as the serial number. Compared to collation of oral photographs and X-ray photographs, it is much easier to collate dental treatment records. And can be done accurately.
The individual identification information N1 of the fixture 10 and the individual identification information N2 of the abutment 20 are described and stored in a medical record managed by a dentist (medical institution) or an individual identification information management ledger managed by a manufacturer (manufacturer). . Patient information is written in the dentist's (medical institution) medical record. In the individual identification information management ledger of the manufacturer, the medical institution of the sales destination is described. Therefore, the patient wearing the implant 5 can be quickly identified from the individual identification information N1, N2.

That is, according to the implant 5 (the fixture 10 and the abutment 20), the traceability (the tracking of the manufacturing / distribution history of these articles) can be performed reliably and accurately. In particular, traceability from the implant 5 (the fixture 10 and the abutment 20) can be ensured.

In addition, since the individual identification information N1 and N2 given to each individual is marked on both the fixture 10 and the abutment 20, identification confirmation, traceability reliability and accuracy are improved.
Even when the medical institution in which the fixture 10 is embedded in the alveolar bone 2 and the medical institution in which the abutment 20 is inserted into the fixture 10 are different, the medical records in which the individual identification information N1 and N2 are described in each medical institution It is because it is preserved. Moreover, even if the manufacturer who produced the fixture 10 and the manufacturer who produced the abutment 20 are different, the individual identification information management ledger is stored in each manufacturer.

Since the individual identification information N1 marked on the fixture 10 and the individual identification information N2 marked on the abutment 20 are different, the individual identification information N1 and N2 can be managed by a plurality of medical institutions and a plurality of manufacturers, respectively. Therefore, the possibility of identity verification and traceability increases.

In addition, since the individual identification information N1 is marked on the distal end portion 11 exposed from the alveolar bone 2 in the outer surface 10S of the fixture 10, the visual identification work of the individual identification information N1 is easy. In particular, since the individual identification information N1 is marked on the distal end surface 11T facing the −Z direction in the distal end portion 11, the individual identification information N1 can be easily visually recognized by removing or removing the gums 4.

In addition, since the individual identification information N2 is marked on the main body portion 21 exposed from the fixture 10 in the outer surface 20S of the abutment 20, the visual identification work of the individual identification information N2 is easy. In particular, since the individual identification information N2 is marked on the exposed surface 21T exposed from the artificial crown 6 in the main body 21, the individual identification information N2 can be easily visually recognized by removing or removing the gums 4. It becomes.

Further, since the individual identification information N1 and N2 are engraved by laser processing, there is almost no possibility that the individual identification information N1 and N2 will be rubbed and disappear. For this reason, individual identification information N1 and N2 can be visually recognized over a long period of time. Therefore, even if it is a case where a long time has passed since receiving the treatment of the implant 5, the identity confirmation of the unidentified person can be performed reliably.

The technical scope of the present invention is not limited to the above-described embodiment. In the range which does not deviate from the meaning of this invention, what added the various change to embodiment mentioned above is included. The specific materials and layer configurations described in the embodiments are merely examples, and can be changed as appropriate.

Although the case where the individual identification information N1 is printed on the front end surface 11T of the fixture 10 has been described, the present invention is not limited to this. The individual identification information N1 may be printed on a surface of the distal end portion 11 excluding the distal end surface 11T.

Although the case where the individual identification information N2 is printed on the exposed surface 21T of the abutment 20 has been described, the present invention is not limited to this. The individual identification information N2 may be printed on a surface of the main body 21 excluding the exposed surface 21T.

Although the case where the individual identification information N1, N2 is marked on both the fixture 10 and the abutment 20 has been described, the present invention is not limited to this. The individual identification information N1 may be marked only on the fixture 10, or the individual identification information N2 may be marked only on the abutment 20.
However, since the fixture 10 is very unlikely to be removed, it is preferable to mark the individual identification information N1 on the fixture 10.

Although the case where the individual identification information N1 marked on the fixture 10 is different from the individual identification information N2 marked on the abutment 20 has been described, the present invention is not limited to this. The same individual identification information N may be marked on one or both of the fixture 10 and the abutment 20.

The individual identification information N is printed, for example, “NANTOH-IP12345”. “NANTOH” is manufacturer information of the implant 5. “IP” means implant. “12345” is a manufacturing number (serial number). The date of manufacture may be added to the individual identification information N.
Since the individual identification information N1 marked on the fixture 10 and the individual identification information N2 marked on the abutment 20 are the same (individual identification information N), the individual identification information N can be centrally managed by the manufacturer.
Therefore, it is possible to reliably and accurately track the manufacturing / distribution history of the implant 5, the fixture 10 and the abutment 20. Therefore, the identity confirmation can be performed reliably and accurately.

The individual identification information N, N1, N2 may be an identifier (symbol) such as a barcode symbol or QR code (registered trademark). That is, it is encoded into a one-dimensional symbol or two-dimensional symbol representing a number or a character, and is marked on the fixture 10 or the abutment 20.
Identifiers such as barcode symbols and QR codes are marked on the fixture 10 and the abutment 20 by printing or stamping.
When coding individual identification information N, N1, N2 into barcode symbols, JAN, EAN, UPC, CODE-39, NW-7, ITF, CODE-128, CODE-93, CODE-11, MSI, etc. Follow the standards.
By reading an identifier such as a bar code symbol or QR code with a bar code symbol reader or the like, the individual identification information N, N1, and N2 can be confirmed more accurately than when visually observing numbers and characters.

In the above embodiment, the individual identification information N1 and N2 are engraved using laser light, but the present invention is not limited to this. Individual identification information N1 and N2 may be stamped by cutting. In particular, in an implant (fixture, abutment) other than a dental implant, the individual identification information N1 and N2 can be stamped by cutting.

Not only when the individual identification information N1 and N2 are imprinted, the individual identification information N1 and N2 may be printed. Any method capable of recognizing the individual identification information N1, N2 over a long period of time is not limited to stamping or printing. For example, an electromagnetic recording method or an optical recording method may be used.

In the above embodiment, the dental implant inserted into the alveolar bone perforation and fixed has been described. However, the implant of the present invention is not limited to this.
The implant of the present invention may be an implant that is fixed in a contact state by being embedded in other parts of bone. For example, the implant of the present invention may be applied as an artificial bone or a bone prosthetic material in order to compensate for a bone defect caused by fracture or resection of a benign tumor or cartilage removed by lumbar surgery. In addition, the implant of the present invention may be employed for an artificial joint member, an osteosynthesis material used for fixing a fracture site, a spinal fixation device, and the like.

In the above-described embodiment, the case where the implant includes a fixture and an abutment (abutment unit) has been described, but the present invention is not limited thereto. The implant of the present invention may be a fixture-only case (a case where an abutment or an abutment unit is not provided).

In the above embodiment, the abutment has been described as constituting an abutment unit, but the present invention is not limited to this. The abutment of the present invention may be attached to and detached from the fixture alone.

2 Alveolar bone (bone) 4 gums 5 implant 6 artificial crown 8 abutment unit 10 fixture 10S outer surface 11 tip 11T tip 20 abutment 20S outer surface 21 body 21T exposed surface N, N1, N2 individual

Claims

An implant comprising a fixture embedded in a bone and an abutment that fits into the fixture,
An implant in which individual identification information given to each individual is marked on one or both of the fixture and the abutment.
The implant according to claim 1, wherein the individual identification information marked on the fixture is different from the individual identification information marked on the abutment.
The implant according to claim 1, wherein the individual identification information marked on the fixture and the individual identification information marked on the abutment are the same.
The implant according to any one of claims 1 to 3, wherein the individual identification information is stamped by laser processing.
The implant according to any one of claims 1 to 4, wherein the individual identification information is encoded and marked with an identifier representing a number or a character.
A fixture embedded in a bone,
A fixture in which individual identification information given to each individual is marked on the tip exposed from the bone.
The fixture according to claim 6, wherein the individual identification information is marked on a distal end surface of the distal end portion facing away from the direction of being embedded in the bone.
An abutment that fits into a fixture embedded in a bone and is fitted with an artificial crown,
An abutment in which individual identification information given to each individual is marked on a main body portion excluding a shaft portion inserted into the fixture.
The abutment according to claim 8, wherein the individual identification information is marked on an exposed surface of the main body portion excluding a portion covered with the artificial dental crown.