JPH0736828B2 - Blade type artificial tooth root - Google Patents
Blade type artificial tooth rootInfo
- Publication number
- JPH0736828B2 JPH0736828B2 JP63213730A JP21373088A JPH0736828B2 JP H0736828 B2 JPH0736828 B2 JP H0736828B2 JP 63213730 A JP63213730 A JP 63213730A JP 21373088 A JP21373088 A JP 21373088A JP H0736828 B2 JPH0736828 B2 JP H0736828B2
- Authority
- JP
- Japan
- Prior art keywords
- artificial tooth
- tooth root
- blade type
- holes
- silicon nitride
- 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.)
- Expired - Lifetime
Links
Landscapes
- Dental Prosthetics (AREA)
- Materials For Medical Uses (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、歯科用或いは整形外科用の窒化ケイ素製人工
歯根に関する。TECHNICAL FIELD The present invention relates to an artificial dental root made of silicon nitride for dental or orthopedic surgery.
従来、硬組織代替材料として主として金属が使用されて
いる。又、最近ではセラミックス、ヒドロキシアパタイ
ト等も用いられている。Conventionally, a metal is mainly used as a hard tissue substitute material. Recently, ceramics, hydroxyapatite and the like have also been used.
しかしながら、硬組織代替材料として広く用いられてい
るニッケル−クロム合金は安価で加工し易いものの、ニ
ッケルイオンが溶出しアレルギー性疾患を引き起こし易
いという欠点がある。又、チタンは機械的強度が大であ
るものの、非常に硬いため微細な加工が困難である。更
に、金属に代わるものとして使用されているセラミック
スとして広く使用されているアルミナ結晶は、生体親和
性に劣り、結晶内に生ずる微細な残留気泡により破折す
るという欠点がある。又、生体親和性の優れたセラミッ
クスとしてヒドロキシアパタイト或いはこれを含有する
材料が開発されているが、機械的強度が充分ではなく、
大きな荷重に耐えるものとするためには単位面積を大き
くする必要があり、薄い歯槽骨を有する患者には使用で
きない。However, although the nickel-chromium alloy widely used as a hard tissue substitute material is inexpensive and easy to process, it has a drawback that nickel ions are easily eluted to cause an allergic disease. Further, although titanium has a large mechanical strength, it is very hard to be finely processed. Further, alumina crystals, which are widely used as ceramics used as a substitute for metals, have poor biocompatibility and have the drawback of breaking due to fine residual bubbles generated in the crystals. In addition, hydroxyapatite or a material containing it has been developed as a ceramic having excellent biocompatibility, but its mechanical strength is not sufficient.
In order to withstand a large load, the unit area needs to be large and cannot be used in patients with thin alveolar bone.
本発明の人工歯根の素材である窒化ケイ素は、機械的強
度が大であり、細く薄く加工することが可能であり、
又、生体不活性ではあるが生体組織との癒着性が優れた
ものである。Silicon nitride, which is the material for the artificial tooth root of the present invention, has high mechanical strength and can be processed thin and thin,
Further, it is inactive in the living body but has excellent adhesiveness to the living tissue.
本願発明は、基底部に複数個の穴或いは孔を設けた凸型
ブレードタイプの窒化ケイ素製人工歯根であって、該基
底部の幅が14〜18mm、人工歯取付け部の幅が３〜6mm及
び厚さが1.7〜2.3mmのＴ字型であり、該人工歯根の表面
にリン酸カルシウムがPVDスパッタリング法でコーティ
ングされていることを特徴とする窒化ケイ素製ブレード
型人工歯根。The invention of the present application is a convex blade type silicon nitride artificial tooth root having a plurality of holes or holes in the base portion, the width of the base portion is 14 to 18 mm, and the width of the artificial tooth attachment portion is 3 to 6 mm. A blade type artificial dental implant made of silicon nitride, which is T-shaped with a thickness of 1.7 to 2.3 mm, and whose surface is coated with calcium phosphate by PVD sputtering.
本発明の凸型ブレードタイプの人工歯根は、複数個の穴
或いは孔が設けられた基底部を歯槽骨内に埋設すること
により、生体硬組織に強固に固定される。又、本発明の
人工歯根の他の先端部には人工歯取付け部が設けられ
る。この人工歯取付け部の形状は人工歯が確実に取り付
けられるものであれば良く、特に制限をされるものでは
ない。人工歯取付け部には咬合による衝撃を吸収するた
め、衝撃吸収材を設けてもよい。衝撃吸収材としては、
シリコンゴム、ポリウレタンエラストマー等から成形さ
れたものが用いられる。The convex blade-type artificial dental root of the present invention is firmly fixed to a living hard tissue by embedding a base portion provided with a plurality of holes or holes in the alveolar bone. Further, an artificial tooth attachment portion is provided at the other tip of the artificial tooth root of the present invention. The shape of the artificial tooth mounting portion is not particularly limited as long as it can securely mount the artificial tooth. An impact absorbing material may be provided in the artificial tooth attachment portion in order to absorb the impact caused by the occlusion. As a shock absorber,
A molded product made of silicon rubber, polyurethane elastomer or the like is used.
本発明の凸型ブレードタイプの人工歯根は、窒化ケイ素
顆粒を成形用金型内に圧密充填し、加熱焼成することに
より作製される。又、必要に応じて上記によって作製さ
れた成形品を機械的に切削加工して仕上げをすることも
できる。The convex blade type artificial dental root of the present invention is produced by compactively filling silicon nitride granules in a molding die and heating and firing. If necessary, the molded product produced as described above can be mechanically cut to finish.
本発明の人工歯根は、生体硬組織との結合性を高めるた
め、その表面を粗面とすることが好ましい。表面を粗面
とする方法としては、 （１）焼結をしたまま研磨を充分に行わない。The artificial dental root of the present invention preferably has a roughened surface in order to enhance the bondability with a living hard tissue. As a method for roughening the surface, (1) polishing is not sufficiently performed while sintering is performed.
（２）焼結品をアルミナ、鉄、炭化ケイ素などの微細粒
によりショットブラスト処理する。(2) The sintered product is shot blasted with fine particles of alumina, iron, silicon carbide or the like.
（３）焼結品のガラス質をフッ化硝酸でエッチング処理
する。(3) The glass material of the sintered product is etched with fluorinated nitric acid.
（４）焼結品を機械的に研削する。(4) Mechanically grind the sintered product.
等が挙げられる。Etc.
更に、本発明の凸型ブレードタイプの人工歯根の生体硬
組織への結合性を高めるために、表面にリン酸カルシウ
ム、例えば、ヒドロキシアパタイト、3CP、4CP系の物質
をコーティングすることもできる。コーティング方法と
しては、例えば、アルゴンガス中で酸素ガスを50容量％
以下混合してもよく、リン酸カルシウムのリン酸イオン
の減少を補充する目的で、リンの酸化物を共存してもよ
く、スッパッタリング条件は、通常、電力100〜200W、
ターゲット電圧1.0〜2.5kV、電極間距離2.5〜4cm、アル
ゴン圧５〜10×10-2Torr、基板温度110〜500℃が好まし
く、リン酸カルシウム分子を物理的に放出させ、それを
人工歯根表面に付着、被覆させるPVDスパッタリング法
が採用できる。Furthermore, in order to improve the binding property of the convex blade type artificial tooth root of the present invention to the hard tissue of the living body, calcium phosphate, for example, hydroxyapatite, 3CP, 4CP-based substance can be coated on the surface. The coating method is, for example, 50% by volume of oxygen gas in argon gas.
The following may be mixed, phosphorus oxide may coexist for the purpose of supplementing the reduction of phosphate ion of calcium phosphate, spattering conditions are usually 100 to 200 W of electric power,
Target voltage 1.0 to 2.5 kV, electrode distance 2.5 to 4 cm, argon pressure 5 to 10 × 10 -2 Torr, substrate temperature 110 to 500 ° C are preferable, and calcium phosphate molecules are physically released and attached to the artificial root surface. The PVD sputtering method of coating can be adopted.
次に、本発明の窒化ケイ素製人工歯根を図面によって説
明する。Next, the silicon nitride artificial dental root of the present invention will be described with reference to the drawings.
第１図は、複数個の穴或いは孔を設けた人工歯根の正面
図、第２図は、その側面図である。FIG. 1 is a front view of an artificial tooth root having a plurality of holes or holes, and FIG. 2 is a side view thereof.
第１図及び第２図に於いて、１は穴或いは孔を設けた人
工歯根、２は基底部、３は穴或いは孔、４は人工歯取付
け部である。In FIGS. 1 and 2, 1 is an artificial tooth root provided with a hole or hole, 2 is a base portion, 3 is a hole or hole, and 4 is an artificial tooth attachment portion.
人工歯根１は、その基底部の幅が14〜18mm程度、人工歯
取付け部の幅が３〜6mm程度の範囲、厚さが1.7〜2.3mm
程度の逆Ｔ字型のものである。The width of the base of the artificial tooth root 1 is about 14 to 18 mm, the width of the artificial tooth mounting portion is about 3 to 6 mm, and the thickness is 1.7 to 2.3 mm.
It is of an inverted T shape.
穴或いは孔３は、円形、楕円形、三角形或いは四角形何
れの形であってもよく、又、歯根を貫通している孔であ
ってもよいし、歯根表面に穿設された穴であってもよ
い。穴或いは孔３の断面積は２mm2程度が好適である。
特に、好適な例としては、直径2.5mm程度の３個の円形
の孔或いは直径3mm程度の２個の円形の孔を、基底部横
方向に等間隔に穿設したものが挙げられる。The hole or hole 3 may have any shape such as a circle, an ellipse, a triangle, or a quadrangle, and may be a hole penetrating the tooth root, or a hole formed in the tooth root surface. Good. The hole or hole 3 preferably has a sectional area of about 2 mm 2 .
A particularly preferable example is one in which three circular holes having a diameter of about 2.5 mm or two circular holes having a diameter of about 3 mm are formed at equal intervals in the lateral direction of the base.
窒化ケイ素は機械的強度が大であり、複雑な応力に耐え
ることができる。そのため窒化ケイ素製の人工歯根では
その断面積を小とすることができる。又、窒化ケイ素は
耐食性が極めて大であり、化学的活性が非常に小である
ため、生体内で化学的及び物理的に変化を生ずることが
ない。更に、生体不活性ではあるものの、窒化ケイ素製
人工歯根の周辺には骨の形成が認められ、歯槽骨に密着
固定され、又、歯肉部との結合が優れており、細菌の感
染が防止される。Silicon nitride has high mechanical strength and can withstand complicated stress. Therefore, the artificial dental root made of silicon nitride can have a small cross-sectional area. In addition, since silicon nitride has extremely high corrosion resistance and extremely low chemical activity, it does not cause chemical or physical changes in the living body. Furthermore, although it is inactive in the living body, bone formation is observed around the silicon nitride artificial tooth root, and it is closely fixed to the alveolar bone, and also has a good bond with the gingival part, preventing bacterial infection. It
第１図は、複数個の穴或いは孔を設けた人工歯根の正面
図、第２図は、その側面図である。 1:複数個の穴或いは孔を設けた人工歯根 2:基底部 3:穴或いは孔 4:人工歯取付け部FIG. 1 is a front view of an artificial tooth root having a plurality of holes or holes, and FIG. 2 is a side view thereof. 1: Artificial tooth root with multiple holes or holes 2: Base part 3: Holes or holes 4: Artificial tooth attachment part
Claims (1)
ブレードタイプの窒化ケイ素製人工歯根であって、該基
底部の幅が14〜18mm、人工歯取付け部の幅が３〜6mm及
び厚さが1.7〜2.3mmのＴ字型であり、該人工歯根の表面
にリン酸カルシウムがPVDスパッタリング法でコーティ
ングされていることを特徴とする窒化ケイ素製ブレード
型人工歯根。1. A convex blade type silicon nitride artificial tooth root having a plurality of holes or holes in the base portion, the width of the base portion is 14 to 18 mm, and the width of the artificial tooth attachment portion is 3 to. A blade type artificial dental implant made of silicon nitride, which is T-shaped with a thickness of 6 mm and a thickness of 1.7 to 2.3 mm, and whose surface is coated with calcium phosphate by PVD sputtering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63213730A JPH0736828B2 (en) | 1988-08-30 | 1988-08-30 | Blade type artificial tooth root |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63213730A JPH0736828B2 (en) | 1988-08-30 | 1988-08-30 | Blade type artificial tooth root |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0263453A JPH0263453A (en) | 1990-03-02 |
| JPH0736828B2 true JPH0736828B2 (en) | 1995-04-26 |
Family
ID=16644050
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63213730A Expired - Lifetime JPH0736828B2 (en) | 1988-08-30 | 1988-08-30 | Blade type artificial tooth root |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0736828B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ATE291388T1 (en) * | 2000-10-09 | 2005-04-15 | Jean-Paul Martin | SET FOR THE IMPLANTATION OF A DENTAL IMPLANT |
| CN112661519A (en) * | 2021-01-28 | 2021-04-16 | 威海圆环先进陶瓷股份有限公司 | Production technology of silicon nitride ceramic pile |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5945384B2 (en) | 2010-08-04 | 2016-07-05 | オリンパス株式会社 | Wireless image communication system, receiver, transmitter, and program |
-
1988
- 1988-08-30 JP JP63213730A patent/JPH0736828B2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5945384B2 (en) | 2010-08-04 | 2016-07-05 | オリンパス株式会社 | Wireless image communication system, receiver, transmitter, and program |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0263453A (en) | 1990-03-02 |
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