JPH0241151A - Artificial dental root - Google Patents
Artificial dental rootInfo
- Publication number
- JPH0241151A JPH0241151A JP63191131A JP19113188A JPH0241151A JP H0241151 A JPH0241151 A JP H0241151A JP 63191131 A JP63191131 A JP 63191131A JP 19113188 A JP19113188 A JP 19113188A JP H0241151 A JPH0241151 A JP H0241151A
- Authority
- JP
- Japan
- Prior art keywords
- ceramic layer
- porous ceramic
- bone
- core body
- calcium phosphate
- 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
- 210000004746 tooth root Anatomy 0.000 title abstract 2
- 239000000919 ceramic Substances 0.000 claims abstract description 17
- 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 12
- 229910000389 calcium phosphate Inorganic materials 0.000 claims abstract description 10
- 239000001506 calcium phosphate Substances 0.000 claims abstract description 10
- 235000011010 calcium phosphates Nutrition 0.000 claims abstract description 10
- 239000013078 crystal Substances 0.000 claims abstract description 10
- 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 abstract description 10
- 210000004872 soft tissue Anatomy 0.000 claims abstract description 5
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 238000002513 implantation Methods 0.000 claims 1
- 210000000988 bone and bone Anatomy 0.000 abstract description 12
- 239000007769 metal material Substances 0.000 abstract description 4
- 239000011148 porous material Substances 0.000 abstract description 4
- 210000001519 tissue Anatomy 0.000 abstract description 4
- 229910001069 Ti alloy Inorganic materials 0.000 abstract description 3
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 abstract description 3
- 239000000853 adhesive Substances 0.000 abstract description 3
- 230000001070 adhesive effect Effects 0.000 abstract description 3
- 239000011521 glass Substances 0.000 abstract description 3
- 239000010936 titanium Substances 0.000 abstract description 3
- 208000015181 infectious disease Diseases 0.000 abstract description 2
- 230000009545 invasion Effects 0.000 abstract description 2
- 229910052719 titanium Inorganic materials 0.000 abstract description 2
- 239000007943 implant Substances 0.000 abstract 2
- 229910000771 Vitallium Inorganic materials 0.000 abstract 1
- 239000000602 vitallium Substances 0.000 abstract 1
- 229910052588 hydroxylapatite Inorganic materials 0.000 description 4
- 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 description 4
- 210000004195 gingiva Anatomy 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 229910001200 Ferrotitanium Inorganic materials 0.000 description 1
- 229910052586 apatite Inorganic materials 0.000 description 1
- 230000008468 bone growth Effects 0.000 description 1
- 239000004068 calcium phosphate ceramic Substances 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 210000000214 mouth Anatomy 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- VSIIXMUUUJUKCM-UHFFFAOYSA-D pentacalcium;fluoride;triphosphate Chemical compound [F-].[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 VSIIXMUUUJUKCM-UHFFFAOYSA-D 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 210000000332 tooth crown Anatomy 0.000 description 1
Landscapes
- Dental Prosthetics (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は歯科医療に使用する人工歯根に関するものであ
る。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an artificial tooth root used in dentistry.
従来から人工歯根としてチタン、ステンレス等の金属材
料が使用されているが、これは生体組織との親和性がな
く、生体為害作用があるため、昨今ではセラミック材料
が注目されている。Metal materials such as titanium and stainless steel have traditionally been used as artificial tooth roots, but these materials have no affinity with living tissue and are harmful to living organisms, so ceramic materials have recently been attracting attention.
このうち臨床例が最も多いのは、アルミナセラミック製
の歯根である。アルミナセラミック自体は生体為害性は
ないが、骨組織との親和性、強度の点で問題がある。リ
ン酸カルシウム系材料も使用されはじめたが強度の点で
問題が残っている。Among these, the tooth root made of alumina ceramic has the most clinical cases. Although alumina ceramic itself is not harmful to living organisms, it has problems in terms of compatibility with bone tissue and strength. Calcium phosphate materials have also begun to be used, but problems remain in terms of strength.
理想的には、強度、靭性に優れ、軟組織と硬組織のすべ
てにわたって親和性にすぐれていることが望ましい。そ
こで、特に硬Ｍｉ織との強固なる結合をもたらすべくセ
ラミック製人工歯根本体の外表部に三次元的網状構造を
したアパタイト焼結体を装着したもの（例えば特公昭５
５−４６７３２）などもある。Ideally, it is desirable to have excellent strength, toughness, and affinity for both soft and hard tissues. Therefore, in order to provide a particularly strong bond with the hard Mi weave, apatite sintered bodies with a three-dimensional network structure are attached to the outer surface of the ceramic artificial tooth root body (for example,
5-46732).
本発明は、従来の人工歯根の問題点を改良し、強度、靭
性に優れ、軟組織、硬組織への親和性に優れた人工歯根
を提供せんとするもので、芯体は、強度、靭性に優れた
金属材料で構成し、その歯頚部に接する部分には軟組織
との親和性に優れたアルミナ単結晶を用い、顎骨内部に
は、骨との親和性に優れたリン酸カルシウム系多孔質層
を適用する。The present invention aims to improve the problems of conventional artificial tooth roots and provide an artificial tooth root that has excellent strength and toughness and has excellent affinity for soft and hard tissues. Constructed from superior metal materials, the part that contacts the tooth neck uses alumina single crystal, which has excellent affinity with soft tissues, and the inside of the jawbone uses a calcium phosphate-based porous layer, which has excellent affinity with bone. do.
これら金属製の芯体に対するアルミナ単結晶から成る円
筒体及びリン酸カルシウム系多孔質セラミック層の接合
は各々が有する熱膨張係数にできるだけ近似した接着剤
でもつ−で接合して構成する。The cylindrical body made of alumina single crystal and the calcium phosphate porous ceramic layer are bonded to the metal core body by using an adhesive whose coefficient of thermal expansion is as close as possible to that of each body.
以下、本発明実施例を図によって具体的に説明する。 Embodiments of the present invention will be specifically described below with reference to the drawings.
第１図において、１は金属製の芯体で、この芯体１はチ
タン、チタン合金、パイタリウムなどの金属材料で作ら
れている。In FIG. 1, reference numeral 1 denotes a metal core body, and this core body 1 is made of a metal material such as titanium, titanium alloy, pitalium, or the like.
また、２はアルミナ単結晶から成る円筒体であって軟組
織（歯肉）に接する外表部を構成している。さらに３は
リン酸カルシウム系多孔質セラミック層（以下、多孔質
セラミック層という）で、骨と接する骨内埋入部分の外
表部を形成している。Further, 2 is a cylindrical body made of alumina single crystal, and constitutes an outer surface portion in contact with soft tissue (gingiva). Furthermore, 3 is a calcium phosphate-based porous ceramic layer (hereinafter referred to as porous ceramic layer), which forms the outer surface of the intraosseous implanted portion that comes into contact with the bone.
このような円筒体２、多孔質セラミック層３は芯体１に
対し、相互に近似した熱膨張係数をもったガラスなどの
接着剤（不図示）でもって接合−体化されている。The cylindrical body 2 and the porous ceramic layer 3 are bonded to the core body 1 using an adhesive (not shown) such as glass having coefficients of thermal expansion similar to each other.
ところで、上記多孔質セラミック層３としてはハイドロ
キシアパタイト、β−第三リン酸カルシウム、あるいは
これらを複合した材料を用いるが、この場合、多孔質セ
ラミック層３への骨の増生侵入条件からして多孔質セラ
ミック層３には平均孔径１００〜３００μｍ、気孔率３
０〜６０χのリン酸カルシウム系多孔質セラミックが適
用される。By the way, as the porous ceramic layer 3, hydroxyapatite, β-tertiary calcium phosphate, or a composite material of these is used.In this case, considering the conditions for bone growth and invasion into the porous ceramic layer 3, porous ceramic Layer 3 has an average pore diameter of 100 to 300 μm and a porosity of 3.
Calcium phosphate porous ceramic having a diameter of 0 to 60 χ is applied.
このように構成された人工歯根Ｐは第２図の模式図の如
く口腔内歯槽骨Ｓに歯肉Ｎを通して埋入、植立され該人
工歯根Ｐの上部には補綴物としての歯冠Ｃが取付けられ
る。The artificial tooth root P constructed in this manner is implanted and planted in the alveolar bone S in the oral cavity through the gingiva N, as shown in the schematic diagram in Fig. 2, and a tooth crown C as a prosthesis is attached to the upper part of the artificial tooth root P. It will be done.
（動物実験）
Ｔｉ合金製の芯体１に、アルミナ単結晶から成る円筒体
２と平均孔径２００μｍ、気孔率４０χの多孔質ハイド
ロキシアパタイトから成るリング状体を多孔質セラミッ
ク層３とすべくリン酸カルシウムガラスによって第１図
のように製作した人工歯根Ｐのサンプルを雑種成人にイ
ンブラントし、３ケ月後に屠殺して、歯肉部、顎骨の骨
内部を観察したところ、歯肉とアルミナ単結晶とは緊密
に接していた。骨との接触部の多孔質ハイドロキシアパ
タイトから成るセラミック層には、新生骨の良好なる侵
入がみられた。このように本実施例に係る菰人工歯根は
、従来のものでは見られないアルミナ単結晶の軟組成と
の親和性、多孔質ハイドロキシアパタイトの優れた骨と
の接合性を備えていることが確認できた。(Animal experiment) Calcium phosphate glass was used to form a porous ceramic layer 3 with a cylindrical body 2 made of alumina single crystal and a ring-shaped body made of porous hydroxyapatite with an average pore diameter of 200 μm and a porosity of 40χ on a Ti alloy core 1. A sample of the artificial tooth root P produced as shown in Fig. 1 was implanted into an adult hybrid male, and after 3 months, the sample was sacrificed and the gingival area and inside of the jaw bone were observed. They were in close contact. Good penetration of new bone was observed in the ceramic layer made of porous hydroxyapatite in the contact area with bone. In this way, it was confirmed that the artificial tooth root according to this example has compatibility with the soft composition of the alumina single crystal and excellent bone bonding properties of the porous hydroxyapatite, which are not seen in conventional tooth roots. did it.
上述した如く、本発明は、アルミナ単結晶の歯肉との親
和性を有しているので、歯脛部からの感染する危険は少
なくなる。一方骨内部は多孔質リン酸カルシウム系セラ
ミックの細孔内への骨の侵入によって、骨との機械的結
合力が増大し、脱落、沈降、動揺などの少ない優れた人
工歯根を提供することができる。As mentioned above, since the present invention has an affinity for the gingiva of alumina single crystal, the risk of infection from the shin region is reduced. On the other hand, as the bone penetrates into the pores of the porous calcium phosphate ceramic, the mechanical bonding force with the bone increases, making it possible to provide an excellent artificial tooth root that is less likely to fall off, settle, or move.
第１図は、本発明実施例による人工歯根の破断面図、第
２図は同じく本発明実施例による人工歯根を顎骨に植立
した状態を説明するための模式的断面図である。
１：芯体 ２：円筒体FIG. 1 is a broken sectional view of an artificial tooth root according to an embodiment of the present invention, and FIG. 2 is a schematic sectional view for explaining a state in which the artificial tooth root according to an embodiment of the present invention is implanted in a jawbone. 1: Core body 2: Cylindrical body
Claims (1)
シウム系多孔質セラミック層を形成し、かつ軟組織に接
する部分の外表部にアルミナ単結晶から成る円筒体を装
備したことを特徴とする人工歯根。An artificial prosthesis characterized by forming a calcium phosphate-based porous ceramic layer on the outer surface of the intraosseous implantation part of the core body made of metal, and equipping the outer surface of the part in contact with soft tissue with a cylindrical body made of alumina single crystal. tooth root.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63191131A JPH0241151A (en) | 1988-07-29 | 1988-07-29 | Artificial dental root |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63191131A JPH0241151A (en) | 1988-07-29 | 1988-07-29 | Artificial dental root |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0241151A true JPH0241151A (en) | 1990-02-09 |
Family
ID=16269393
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63191131A Pending JPH0241151A (en) | 1988-07-29 | 1988-07-29 | Artificial dental root |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0241151A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63228577A (en) * | 1987-03-05 | 1988-09-22 | テレホン プロダクツ インコーポレイテツド | Rotary electric connector |
| WO2007008031A1 (en) * | 2005-07-11 | 2007-01-18 | Ill-Mo Rhew | Dental implant fixture |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5911843A (en) * | 1982-07-12 | 1984-01-21 | 日本特殊陶業株式会社 | Dental implant for mounting denture |
| JPS62167559A (en) * | 1986-01-20 | 1987-07-23 | 株式会社ニコン | Dental implant |
-
1988
- 1988-07-29 JP JP63191131A patent/JPH0241151A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5911843A (en) * | 1982-07-12 | 1984-01-21 | 日本特殊陶業株式会社 | Dental implant for mounting denture |
| JPS62167559A (en) * | 1986-01-20 | 1987-07-23 | 株式会社ニコン | Dental implant |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63228577A (en) * | 1987-03-05 | 1988-09-22 | テレホン プロダクツ インコーポレイテツド | Rotary electric connector |
| WO2007008031A1 (en) * | 2005-07-11 | 2007-01-18 | Ill-Mo Rhew | Dental implant fixture |
| KR100728815B1 (en) * | 2005-07-11 | 2007-06-19 | 유일모 | Dental implant fixture |
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