JPH0323856A - Artificial root of tooth - Google Patents
Artificial root of toothInfo
- Publication number
- JPH0323856A JPH0323856A JP1159180A JP15918089A JPH0323856A JP H0323856 A JPH0323856 A JP H0323856A JP 1159180 A JP1159180 A JP 1159180A JP 15918089 A JP15918089 A JP 15918089A JP H0323856 A JPH0323856 A JP H0323856A
- Authority
- JP
- Japan
- Prior art keywords
- sintered body
- artificial tooth
- root
- hydroxyapatite
- tooth root
- 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.)
- Pending
Links
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims abstract description 18
- 229910052588 hydroxylapatite Inorganic materials 0.000 claims abstract description 16
- XYJRXVWERLGGKC-UHFFFAOYSA-D pentacalcium;hydroxide;triphosphate Chemical compound [OH-].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O XYJRXVWERLGGKC-UHFFFAOYSA-D 0.000 claims abstract description 16
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 8
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 4
- 239000001506 calcium phosphate Substances 0.000 claims description 3
- 239000010419 fine particle Substances 0.000 claims description 3
- QORWJWZARLRLPR-UHFFFAOYSA-H tricalcium bis(phosphate) Chemical compound [Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O QORWJWZARLRLPR-UHFFFAOYSA-H 0.000 claims description 3
- 229940078499 tricalcium phosphate Drugs 0.000 claims description 3
- 229910000391 tricalcium phosphate Inorganic materials 0.000 claims description 3
- 235000019731 tricalcium phosphate Nutrition 0.000 claims description 3
- 239000000377 silicon dioxide Substances 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 210000004746 tooth root Anatomy 0.000 abstract 6
- 230000011164 ossification Effects 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 6
- 210000000988 bone and bone Anatomy 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000011162 core material Substances 0.000 description 2
- 208000032544 Cicatrix Diseases 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 239000012790 adhesive layer Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 239000003479 dental cement Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 150000004678 hydrides Chemical class 0.000 description 1
- 239000007943 implant Substances 0.000 description 1
- 238000002513 implantation Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 231100000241 scar Toxicity 0.000 description 1
- 230000037387 scars Effects 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium 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
- A61C8/0012—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools characterised by the material or composition, e.g. ceramics, surface layer, metal alloy
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K6/00—Preparations for dentistry
- A61K6/50—Preparations specially adapted for dental root treatment
- A61K6/58—Preparations specially adapted for dental root treatment specially adapted for dental implants
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K6/00—Preparations for dentistry
- A61K6/80—Preparations for artificial teeth, for filling teeth or for capping teeth
- A61K6/802—Preparations for artificial teeth, for filling teeth or for capping teeth comprising ceramics
- A61K6/818—Preparations for artificial teeth, for filling teeth or for capping teeth comprising ceramics comprising zirconium oxide
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K6/00—Preparations for dentistry
- A61K6/80—Preparations for artificial teeth, for filling teeth or for capping teeth
- A61K6/831—Preparations for artificial teeth, for filling teeth or for capping teeth comprising non-metallic elements or compounds thereof, e.g. carbon
- A61K6/838—Phosphorus compounds, e.g. apatite
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K6/00—Preparations for dentistry
- A61K6/80—Preparations for artificial teeth, for filling teeth or for capping teeth
- A61K6/849—Preparations for artificial teeth, for filling teeth or for capping teeth comprising inorganic cements
- A61K6/864—Phosphate cements
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L27/00—Materials for grafts or prostheses or for coating grafts or prostheses
- A61L27/02—Inorganic materials
- A61L27/10—Ceramics or glasses
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L27/00—Materials for grafts or prostheses or for coating grafts or prostheses
- A61L27/02—Inorganic materials
- A61L27/12—Phosphorus-containing materials, e.g. apatite
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2310/00—Prostheses classified in A61F2/28 or A61F2/30 - A61F2/44 being constructed from or coated with a particular material
- A61F2310/00005—The prosthesis being constructed from a particular material
- A61F2310/00179—Ceramics or ceramic-like structures
- A61F2310/00293—Ceramics or ceramic-like structures containing a phosphorus-containing compound, e.g. apatite
Landscapes
- Health & Medical Sciences (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Chemical & Material Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Epidemiology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Ceramic Engineering (AREA)
- Plastic & Reconstructive Surgery (AREA)
- Engineering & Computer Science (AREA)
- Inorganic Chemistry (AREA)
- Dermatology (AREA)
- Medicinal Chemistry (AREA)
- Transplantation (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Dentistry (AREA)
- Dental Prosthetics (AREA)
- Materials For Medical Uses (AREA)
Abstract
Description
【発明の詳細な説明】
「利用分野」
本発明は、セラξツクス材料から或る人工歯根に関する
。DETAILED DESCRIPTION OF THE INVENTION Field of Application The present invention relates to an artificial tooth root made of ceramic material.
「従来技術及びその問題点」
ハイドロキシアバタイトは、優れた生体親和性を有する
ため、様々なインプラント拐に利用されている。人工歯
根への利用についても種々検討されてきたが、ハイトロ
キシアパタイ１−の強度不足を懸念して、第３図に示す
ようにチタン等の金属製の人工歯根芯材４の表面にハイ
ドロキシアパタイｌ一層５を設けたものが、一般的に使
用されている。"Prior Art and its Problems" Hydroxyabatite has excellent biocompatibility and is therefore used for various implant preparations. Various studies have been made regarding its use in artificial tooth roots, but due to concerns about the lack of strength of hydroxyapatite 1-, hydroxyapatite was added to the surface of the artificial tooth root core material 4 made of metal such as titanium, as shown in Fig. 3. A structure having a single layer 5 of apertures is generally used.
しかしながら、人工歯根は直径約４ ＋ｎｍという小さ
いものであり、このように小さい構造の中にさらに中心
部にポストを埋設すると、３層構造となり、さらにその
各層の間に接着剤層が存在し、結局、５層構造が形威さ
れる。したがって、製造が煩雑であるばかりでなく、金
属層も極めて薄く・Ｕざるを得ないため、補強効果もあ
まり顕著ではなかった。However, artificial tooth roots are small, with a diameter of approximately 4 nm, and when a post is further embedded in the center of such a small structure, it becomes a three-layer structure, with an adhesive layer between each layer. In the end, a five-layer structure takes shape. Therefore, not only was manufacturing complicated, but the metal layer had to be extremely thin, and the reinforcing effect was not very significant.
「発明の目的」
本発明は、構造が簡単で容易に製造できるとともに、充
分な強度を有する生体親和性人工歯根を提供することを
目的とする。"Objective of the Invention" An object of the present invention is to provide a biocompatible artificial tooth root that has a simple structure, can be easily manufactured, and has sufficient strength.
「発明の構成」
本発明の人工歯根は、ハイド１コキシアパタイ１・焼結
体から成る人工歯根本体の中心部に、アルξナ又はジル
コニアの焼結体から或るポストが埋設されることを特徴
とする。"Structure of the Invention" The artificial tooth root of the present invention is characterized in that a post made of a sintered body of alumina or zirconia is embedded in the center of the artificial tooth root body made of a sintered body of hydride, koxyapatite, and a sintered body. shall be.
米発明の人工歯根の本体は、ハイドロキシアパタイ１・
焼結体から或るものである。このハイドロキシアパタイ
ト焼結体は、純粋である必要はないが、ハイドロキシア
パタイトを５０重量％以上含むのが好ましい。５０重量
％未満では、顎骨に埋大した後、顎骨との骨性癒着が不
充分となるおそれがある。The main body of the artificial tooth root invented by the US is hydroxyapatai 1.
It is made from a sintered body. This hydroxyapatite sintered body does not need to be pure, but preferably contains 50% by weight or more of hydroxyapatite. If it is less than 50% by weight, there is a risk that bony adhesion with the jawbone will be insufficient after implantation into the jawbone.
本発明の人工歯根の本体は、ハイドロキシアバタイトに
微粒状あるいはウィスカー状のリン酸三カルシウム、ア
ルミナ、シリカ及びジルコニアの１種以上を添加・混合
して焼結したものから構或することもできる。微粒状あ
るいはウィスカー状の上記のようなセラミックスを混入
することにより、強度の向上が期待される。また、リン
酸三カルシウムを添加したものは、その人工歯根を顎骨
に埋人したときに、新生骨の形戒に有効に作用する点で
殊に好ましい。The main body of the artificial tooth root of the present invention may be made of hydroxyabatite mixed with one or more of tricalcium phosphate, alumina, silica, and zirconia in the form of fine particles or whiskers, and then sintered. . By incorporating the above-mentioned ceramics in the form of fine particles or whiskers, it is expected that the strength will be improved. Furthermore, those to which tricalcium phosphate is added are particularly preferable because they effectively affect the shape of new bone when the artificial tooth root is implanted in the jawbone.
本発明者の研究によれば、従来の人工歯根の金属部分を
省き、人工歯根本体をハイドロキシアバタイト焼結体だ
けから構威しても、充分に使用に耐える強度を有するこ
とがわかった。さらに、ハイドロキシアバタイト焼結体
だけから或るため、ハイドロキシアパタイト焼結体の層
がそれだレＪ厚くとれる。したがって、人工歯根を顎骨
に埋大したときに、顎骨との骨性癒着が充分な厚さをも
って強固に行われることになる。According to the research conducted by the present inventors, it has been found that even if the metal part of the conventional artificial tooth root is omitted and the artificial tooth root body is constructed only from a hydroxyabatite sintered body, it has enough strength to withstand use. Furthermore, since it is made only of sintered hydroxyapatite, the layer of sintered hydroxyapatite can be made much thicker. Therefore, when the artificial tooth root is embedded in the jawbone, bony adhesion with the jawbone will be firmly established with sufficient thickness.
さらに、本発明の人工歯根は、その中心部に四部を有し
、この凹部にアルミナ又はジルコニアの焼結体から或る
ポストが埋設される。埋設に際しては、歯科分野におい
て常用の歯科用セメン１〜を用いることができる。Furthermore, the artificial tooth root of the present invention has four parts at its center, and a certain post made of a sintered body of alumina or zirconia is embedded in the recessed part. For embedding, dental cements 1 to 1 commonly used in the dental field can be used.
本発明の人工歯根においては、上記のようにハイドロキ
シアパタイト焼結体から戒る人工歯根本体の中心部に、
アルξナ又はジルコニアの焼結体から或るポストが埋設
されるのであるが、ポストを始めから本体に埋設してお
く必要はなく、まず人工歯根本体を顎骨内に埋人し、周
囲の傷が治癒３
４
し、人工歯根と骨組織とが充分に骨性癒着した後に、ポ
ストを埋設してもよい。In the artificial tooth root of the present invention, as mentioned above, in the center of the artificial tooth root body, which is made of hydroxyapatite sintered body,
A post is embedded from a sintered body of aluminum or zirconia, but it is not necessary to embed the post in the main body from the beginning; first, the root body of the artificial tooth is embedded in the jawbone, and the surrounding scars are removed. The post may be implanted after the tooth has healed and the artificial tooth root and the bone tissue have sufficiently osseously fused together.
本発明の人工歯根においては、ポストが乳白色のセラく
ツクスから或るため、天然歯の歯冠の色に近いため審美
的にも優れている。In the artificial tooth root of the present invention, since the post is made of milky-white cerax, the color is close to that of the crown of a natural tooth, so it is aesthetically superior.
「発明の実施例」
次に、本発明を図面に示した実施例に基づいて説明する
。"Embodiments of the Invention" Next, the present invention will be described based on embodiments shown in the drawings.
第１図は、本発明の人工歯根の断面図である。FIG. 1 is a sectional view of the artificial tooth root of the present invention.
第１図において、人工歯根本体１はハイドロキシアパタ
イト焼結体から或り、その中心部に凹部を有し、この凹
部にアルミナ又はジルコニアの焼結体から成るポスト２
が埋設される。In FIG. 1, an artificial tooth root body 1 is made of a sintered body of hydroxyapatite and has a recess in its center, and a post 2 made of a sintered body of alumina or zirconia is inserted into this recess.
will be buried.
このポスト２は、人工歯根本体を顎骨内に埋入した後に
、ハイドロキジアバタイト焼結体と顎骨との骨性癒着が
充分に起こってから埋設すればよい。それまでは、凹部
に歯肉が侵入するのを防止するため、凹部に栓状体３を
付けておくのが好ましい。This post 2 may be embedded after the artificial tooth root body is embedded in the jawbone and after bony adhesion between the sintered hydroxyabatite body and the jawbone has sufficiently occurred. Until then, it is preferable to attach a plug-like body 3 to the recess in order to prevent gums from entering the recess.
「発明の効果」
本発明の人工歯根は、構造が簡単であり、容易に製造す
ることができ、しかも充分な強度を有する。また、人工
歯根本体がハイドロキシアバタイト焼結体から威り、ハ
イドロキシアバタイト焼結体の厚さを充分にとれるため
、顎骨との骨性癒着や新生骨形戒が充分な厚さで行われ
、期間と経過と共に強度が向上する。"Effects of the Invention" The artificial tooth root of the present invention has a simple structure, can be easily manufactured, and has sufficient strength. In addition, the root body of the artificial tooth is made of sintered hydroxyabatite, and the sintered hydroxyabatite can be thick enough to allow bony fusion with the jawbone and formation of new bone to occur with sufficient thickness. , the strength increases over time and over time.
ている。ing.
第１図は本発明の人工歯根の断面図、第２図は本発明の
人工歯根をポストの埋設前の状態で示す断面図、第３図
は従来の人工歯根の断面図である。
符号の説明
１・・・人工歯根本体、２・・・ポスト、３・・・栓状
体、４・・・人工歯根芯材、５・・・・ハイドロキシア
パクイト層
第３図FIG. 1 is a cross-sectional view of the artificial tooth root of the present invention, FIG. 2 is a cross-sectional view of the artificial tooth root of the present invention before a post is embedded, and FIG. 3 is a cross-sectional view of a conventional artificial tooth root. Explanation of symbols 1... Artificial tooth root body, 2... Post, 3... Plug-like body, 4... Artificial tooth root core material, 5... Hydroxyapacite layer Fig. 3
Claims (1)
体の中心部に、アルミナ又はジルコニアの焼結体から成
るポストが埋設されることを特徴とする人工歯根。 ２、ハイドロキシアパタイト焼結体が、ハイドロキシア
パタイトに微粒状あるいはウィスカー状のリン酸三カル
シウム、アルミナ、シリカ及びジルコニアの１種以上を
混合して焼結したものである請求項１記載の人工歯根。[Claims] 1. An artificial tooth root, characterized in that a post made of an alumina or zirconia sintered body is embedded in the center of an artificial tooth root body made of a hydroxyapatite sintered body. 2. The artificial tooth root according to claim 1, wherein the hydroxyapatite sintered body is a mixture of hydroxyapatite and one or more of tricalcium phosphate, alumina, silica, and zirconia in the form of fine particles or whiskers.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1159180A JPH0323856A (en) | 1989-06-21 | 1989-06-21 | Artificial root of tooth |
| DE4019846A DE4019846A1 (en) | 1989-06-21 | 1990-06-21 | Ceramic artificial tooth roots - with main body of sintered hydroxy:apatite and central mounting peg of sintered aluminium oxide or zirconium oxide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1159180A JPH0323856A (en) | 1989-06-21 | 1989-06-21 | Artificial root of tooth |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0323856A true JPH0323856A (en) | 1991-01-31 |
Family
ID=15688052
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1159180A Pending JPH0323856A (en) | 1989-06-21 | 1989-06-21 | Artificial root of tooth |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPH0323856A (en) |
| DE (1) | DE4019846A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005065803A (en) * | 2003-08-21 | 2005-03-17 | Yasumasa Akagawa | Implant fixing method, its fixing member and implant compound material |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1991003213A1 (en) * | 1989-08-30 | 1991-03-21 | Tdk Corporation | Artificial dental root |
| DE19530981A1 (en) * | 1995-08-23 | 1997-02-27 | Marcus Dr Simon | Prefabricated ceramic event structure for forming artificial crown stumps for prosthetic restorations |
| DE19630412C2 (en) * | 1996-07-26 | 2001-10-04 | Ivoclar Vivadent Ag | Process for producing an all-ceramic dental structure |
| DE19638232B4 (en) * | 1996-09-19 | 2004-05-27 | Neumeyer, Stefan, Dr. | Dental implant |
| DE10049971A1 (en) * | 2000-10-06 | 2002-04-11 | Wieland Edelmetalle | Ceramic dental articles such as crowns are made by electrophoretic deposition of a particle dispersion onto a shaped electrode and are strengthened by inclusion of ceramic fibers and/or nanocrystalline particles |
| US7850452B2 (en) | 2005-04-27 | 2010-12-14 | Biomet 3I, Llc | Pre-stressed implant component and assembly |
| DE102005032938A1 (en) | 2005-07-14 | 2007-01-18 | Gebr. Brasseler Gmbh & Co. Kg | Dental implant |
| FR3037803B1 (en) * | 2015-06-23 | 2017-07-07 | I Ceram | IMPLANT OF SUBSTITUTION OF STERNUM |
-
1989
- 1989-06-21 JP JP1159180A patent/JPH0323856A/en active Pending
-
1990
- 1990-06-21 DE DE4019846A patent/DE4019846A1/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005065803A (en) * | 2003-08-21 | 2005-03-17 | Yasumasa Akagawa | Implant fixing method, its fixing member and implant compound material |
Also Published As
| Publication number | Publication date |
|---|---|
| DE4019846A1 (en) | 1991-01-03 |
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