JPH04170946A - Artificial tooth - Google Patents
Artificial toothInfo
- Publication number
- JPH04170946A JPH04170946A JP2293714A JP29371490A JPH04170946A JP H04170946 A JPH04170946 A JP H04170946A JP 2293714 A JP2293714 A JP 2293714A JP 29371490 A JP29371490 A JP 29371490A JP H04170946 A JPH04170946 A JP H04170946A
- Authority
- JP
- Japan
- Prior art keywords
- tooth root
- root part
- superelastic alloy
- crown
- tooth
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 22
- 239000000956 alloy Substances 0.000 claims abstract description 22
- 210000000332 tooth crown Anatomy 0.000 claims description 10
- KHYBPSFKEHXSLX-UHFFFAOYSA-N iminotitanium Chemical compound [Ti]=N KHYBPSFKEHXSLX-UHFFFAOYSA-N 0.000 abstract description 5
- 229910001000 nickel titanium Inorganic materials 0.000 abstract description 5
- 239000000853 adhesive Substances 0.000 abstract description 2
- 230000010355 oscillation Effects 0.000 abstract 2
- 210000003456 pulmonary alveoli Anatomy 0.000 abstract 2
- 239000000919 ceramic Substances 0.000 abstract 1
- 230000008878 coupling Effects 0.000 abstract 1
- 238000010168 coupling process Methods 0.000 abstract 1
- 238000005859 coupling reaction Methods 0.000 abstract 1
- 230000001079 digestive effect Effects 0.000 abstract 1
- 210000000988 bone and bone Anatomy 0.000 description 4
- 210000001519 tissue Anatomy 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 229910001020 Au alloy Inorganic materials 0.000 description 1
- 229910000925 Cd alloy Inorganic materials 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000001055 chewing effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000003353 gold alloy Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910001285 shape-memory alloy Inorganic materials 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C8/00—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
- A61C8/0048—Connecting the upper structure to the implant, e.g. bridging bars
- A61C8/0075—Implant heads specially designed for receiving an upper structure
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C2201/00—Material properties
- A61C2201/007—Material properties using shape memory effect
Landscapes
- Health & Medical Sciences (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Dentistry (AREA)
- Epidemiology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Dental Prosthetics (AREA)
Abstract
Description
【発明の詳細な説明】 本発明は、人工歯に関する。[Detailed description of the invention] The present invention relates to artificial teeth.
人工歯に於ける歯根部が、歯槽骨等に対して与える影響
は、極めて大きい。The root portion of an artificial tooth has an extremely large influence on the alveolar bone and the like.
特に咀嗜時に於いて歯冠部を介して歯根部に伝わる力は
、局所的集中性が高いことから、歯槽骨を破損させるに
至らしめるものであった。これら、人工歯が受ける様々
な物理的揺動を歯根部へ伝達させない方法として、歯根
部と歯冠部との接触部分にこれら揺動を吸収するゴム、
樹脂を配置したものが提案されている。しかしながら、
ゴム、樹脂等では劣化か著しく長期間の使用には耐えら
れないものであった。Particularly during chewing, the force transmitted to the root of the tooth via the crown of the tooth is highly locally concentrated, leading to damage to the alveolar bone. As a method of preventing the various physical vibrations that the artificial tooth undergoes from being transmitted to the tooth root, rubber that absorbs these vibrations is used at the contact area between the tooth root and the crown.
One in which resin is placed has been proposed. however,
Rubber, resin, etc. had deteriorated significantly and could not withstand long-term use.
上記に鑑み本発明は、咀嗜力等によって生しる物理的揺
動に対処し、歯槽骨等、生体組織を傷つけることなく長
期間使用可能な人工歯の提供を目的とする。本発明は、
歯冠部と歯根部の間に超弾性合金を配置することにより
、歯冠部から歯根部へ伝達する上記物理的揺動をすばや
く吸収し、しかも劣化が少ないことから長期間安定した
利用が可能である等の特徴を有する。In view of the above, an object of the present invention is to provide an artificial tooth that can cope with physical fluctuations caused by masticatory force and can be used for a long period of time without damaging living tissues such as alveolar bone. The present invention
By placing a superelastic alloy between the tooth crown and tooth root, it quickly absorbs the physical vibrations transmitted from the tooth crown to the tooth root, and since there is little deterioration, it can be used stably for a long period of time. It has the following characteristics.
次に本発明の形状乃至構造を説明する。Next, the shape and structure of the present invention will be explained.
第１図は歯冠部（Ａ）を歯根部（Ｃ）に覆わせる際、そ
の接触部に厚さ数（ｍｍ）のＮ ｉ −Ｔ ｉ性の超弾
性合金（Ｂ）を配置したものである。超弾性合金（Ｂ）
は、数枚の板状体を、歯根部（Ｃ）頭部の形状に合わせ
て重ねて加工したものである。超弾性合金（Ｂ）は接着
剤等で、歯根部（Ｃ）頭部に接着させてもよいが、単に
歯根部と歯冠部との機械的結合時、−緒に挟み込んでも
よい。Figure 1 shows a case in which a Ni-Ti superelastic alloy (B) with a thickness of several millimeters (mm) is placed in the contact area when the crown (A) is covered with the root (C). be. Superelastic alloy (B)
This is made by stacking several plate-like bodies to match the shape of the tooth root (C) head. The superelastic alloy (B) may be adhered to the head of the tooth root (C) with an adhesive or the like, but it may also simply be sandwiched together when the tooth root and crown are mechanically connected.
第２図は、歯根部（Ｃ）に歯冠部（Ａ）を差し込む構造
を持つものに対し、超弾性合金（Ｂ）を介在させた場合
の実施例を示すものである。FIG. 2 shows an example in which a superelastic alloy (B) is interposed in a structure in which a tooth crown (A) is inserted into a tooth root (C).
歯根部（Ｃ）と歯冠部（Ａ）とが接触しそうな個所は全
て、超弾性合金（Ｂ）を介在させ、歯冠部か受ける力を
歯根部（Ｃ）に伝達させないようにしている。超弾性合
金（Ｂ）とは、形状記憶合金を含むものであって、例え
ばＮ ｉ −Ｔ ｉ合金・・・・・・・・・・・・・・
・・・・・・・Ｃｕ−Ｚｎ−ＡＬ金合金Ａｕ −Ｃｄ合
金等々がある。しかし、耐食性や強度生体との適合性の
点でＮｉ−Ｔｉ合金が望ましい。A superelastic alloy (B) is interposed at all points where the tooth root (C) and the tooth crown (A) are likely to come into contact, so that the force exerted by the tooth crown is not transmitted to the tooth root (C). . The superelastic alloy (B) includes a shape memory alloy, such as a Ni-Ti alloy.
...Cu-Zn-AL gold alloy, Au-Cd alloy, etc. However, Ni-Ti alloys are desirable in terms of corrosion resistance, strength, and compatibility with living organisms.
第３図は、実際に本発明を生体組織に植設した時の模式
的な図である。歯根部（Ｃ）Ｊこは歯冠部（Ａ）から伝
達されて来る揺動によって生じる抜は等を阻止する為の
らせん状の突起が設けである。歯冠部（Ａ）と歯根部（
Ｃ）との間には、Ｎ ｉ −Ｔ ｉ合金製の超弾性合金
（Ｂ）が配置されている。FIG. 3 is a schematic diagram when the present invention is actually implanted into living tissue. The tooth root (C) is provided with a spiral protrusion to prevent extraction, etc. caused by the rocking motion transmitted from the tooth crown (A). Crown (A) and root (
A superelastic alloy (B) made of a Ni-Ti alloy is arranged between the superelastic alloy (B) and the superelastic alloy (B).
尚、歯肉部（ＡＡ）歯槽骨（ＢＢ）と歯根部（Ｃ）との
接触面には、生体適合性を有するセラミ・ンクスの層が
形成されている。Note that a layer of biocompatible ceraminx is formed on the contact surface between the gingival area (AA), the alveolar bone (BB), and the tooth root (C).
以上、説明の如く本発明は、歯根部と歯冠部との接触面
に超弾性合金を介在せしめｆ二構成により、歯冠部か受
けた力を歯根部に伝えることがなくしかも超弾性合金（
ま劣イヒしなし＼ことから、長期間の使用に耐えられる
等の効果を有するものである。As explained above, the present invention interposes a superelastic alloy on the contact surface between the tooth root and the tooth crown, and by using the f2 configuration, the force applied by the tooth crown is not transmitted to the tooth root, and the superelastic alloy (
There is no inferiority, so it has the effect of being able to withstand long-term use.
第１図、第２図は本発明の一実施例を示す断面図、第３
図は本発明の一実施例を生体組織の埋入した時の一部断
面を含む図である。
Ａ・・・・・・・・・・・・・・・歯冠部Ｂ・・・・・
・・・・・・・・・・超弾性合金Ｃ・・・・・・・・・
・・・・・・歯根部特許出願人 株式会社アト
／くンス第３Ｍ1 and 2 are cross-sectional views showing one embodiment of the present invention, and FIG.
The figure is a diagram including a partial cross section when an embodiment of the present invention is implanted into living tissue. A・・・・・・・・・・・・Coronal part B・・・・・・
・・・・・・・・・Superelastic alloy C・・・・・・・・・
...Tooth root patent applicant Ato Co., Ltd./Kunsu No. 3M
Claims (1)
たことを特徴とする人工歯。(1) An artificial tooth characterized by having a superelastic alloy interposed between the tooth root and the tooth crown.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2293714A JP2952028B2 (en) | 1990-11-01 | 1990-11-01 | Artificial teeth |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2293714A JP2952028B2 (en) | 1990-11-01 | 1990-11-01 | Artificial teeth |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04170946A true JPH04170946A (en) | 1992-06-18 |
| JP2952028B2 JP2952028B2 (en) | 1999-09-20 |
Family
ID=17798291
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2293714A Expired - Fee Related JP2952028B2 (en) | 1990-11-01 | 1990-11-01 | Artificial teeth |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2952028B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002034155A1 (en) * | 2000-10-26 | 2002-05-02 | Biorthex Inc. | Dental implant |
| EP2392289A1 (en) * | 2010-06-04 | 2011-12-07 | Chun-Leon Chen | Restorable one piece implant |
| US9271811B1 (en) | 2003-02-27 | 2016-03-01 | Philip Scott Lyren | Method for forming a dental implant with porous body |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8047844B2 (en) * | 2009-07-16 | 2011-11-01 | Rodo Medical, Inc. | Dental rentention systems |
-
1990
- 1990-11-01 JP JP2293714A patent/JP2952028B2/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002034155A1 (en) * | 2000-10-26 | 2002-05-02 | Biorthex Inc. | Dental implant |
| US9271811B1 (en) | 2003-02-27 | 2016-03-01 | Philip Scott Lyren | Method for forming a dental implant with porous body |
| EP2392289A1 (en) * | 2010-06-04 | 2011-12-07 | Chun-Leon Chen | Restorable one piece implant |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2952028B2 (en) | 1999-09-20 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |