JPS6237106B2 - - Google Patents
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- Publication number
- JPS6237106B2 JPS6237106B2 JP58240933A JP24093383A JPS6237106B2 JP S6237106 B2 JPS6237106 B2 JP S6237106B2 JP 58240933 A JP58240933 A JP 58240933A JP 24093383 A JP24093383 A JP 24093383A JP S6237106 B2 JPS6237106 B2 JP S6237106B2
- Authority
- JP
- Japan
- Prior art keywords
- melting point
- metal
- dental
- metals
- present
- 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
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- Dental Preparations (AREA)
Description
【発明の詳細な説明】
本発明は歯科用金属材料に関する。歯牙の窩洞
修復用に充填する歯科用金属材料として、従来よ
りアマルガムが用いられている。これは液体の
Hgに金属粉末を混入・練和するもので、金属粉
末としては通常Ag＋Sn、Ag＋ZnまたはAg＋Sn
＋Zn等が用いられている。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to dental metal materials. Amalgam has conventionally been used as a dental metal material to be filled for tooth cavity restoration. This is a liquid
Metal powder is mixed and kneaded with Hg, and the metal powder is usually Ag+Sn, Ag+Zn, or Ag+Sn.
+Zn etc. are used.
このアマルガムは上記した如くHgを用いるた
めにその毒性が問題となり、常温においても蒸気
となつて毒性雰囲気を作るために歯科医等に悪い
影響を与え、さらに常時歯牙に充填されている患
者にも何らかの悪い影響があることが考えられて
いる。 As mentioned above, this amalgam uses Hg, which poses a problem of toxicity.Even at room temperature, it turns into vapor and creates a toxic atmosphere, which has a negative impact on dentists, and also on patients whose teeth are constantly filled. It is believed that there are some negative effects.
しかし、このアマルガムは用法が容易であるた
めに毒性の必要があるにもかかわらず使用がつづ
けられているのが現状である。しかし、Hgに代
わる金属の研究も進んでいる。既にGa単体やGa
の二元合金が研究されている。Gaは毒性が無
く、融点が約30℃であるためにその融点を下げる
ためにInを加えることにより約17℃に下げること
ができるが未だ使用するには融点が高く作業性が
良好でないもので広く使用されるには至つていな
い。 However, because this amalgam is easy to use, it continues to be used despite the need for toxicity. However, research on metals that can replace Hg is also progressing. Ga alone and Ga
binary alloys are being studied. Ga is non-toxic and has a melting point of approximately 30℃, which can be lowered to approximately 17℃ by adding In to lower the melting point, but the melting point is still too high for use and workability is not good. It has not yet been widely used.
本発明は毒性が無くしかも15℃以下の融点を有
する歯科用金属材料を得ることを目的とし、Ga
を含む三元合金より成り、他の金属との親和性が
良く、しかも各種金属の添加により耐食性および
機械的特性などが向上する。歯科用金属材料とし
たことを特徴とする。 The purpose of the present invention is to obtain a dental metal material that is non-toxic and has a melting point of 15°C or less.
It is made of a ternary alloy that has good compatibility with other metals, and the addition of various metals improves corrosion resistance and mechanical properties. It is characterized by being a dental metal material.
以下に本発明の実施例を説明する。 Examples of the present invention will be described below.
本発明はGa−In−Snの三元合金から成り、そ
の配合比を選ぶことによりその融点を決定するも
ので、先ず比較のために従来の技術として、
Ga68W、In24W％およびSn8W％としたところ融
点は３℃となつた。そこで、本実施例ではSnの
含有量をある範囲まで増すことによりさらに融点
を下げ、しかも金属粉末と混合、練和したときに
その硬化速度が実用上に適用なものとなり、耐食
性にもすぐれることがわかつた。例えば、
Ga64W、In20W％およびSn16W％とすることに
より融点は−10℃にも達し、液状範囲を一段と拡
大することができ、さらに鉄や銅などの金属、ガ
ラスやアルミナ焼結板などのセラミツクスおよび
歯質にすぐれたぬれ性を示した。 The present invention consists of a ternary alloy of Ga-In-Sn, and its melting point is determined by selecting its blending ratio.First, for comparison, as a conventional technology,
When Ga68W, In24W% and Sn8W% were used, the melting point was 3°C. Therefore, in this example, by increasing the Sn content to a certain range, the melting point is further lowered, and when mixed and kneaded with metal powder, the hardening speed is practically applicable, and it also has excellent corrosion resistance. I found out. for example,
By setting Ga64W, In20W% and Sn16W%, the melting point reaches -10℃, and the liquid range can be further expanded. It showed excellent wettability.
さらに種々の実験の結果In1〜45W％、Sn13.6
〜30W％、残部Gaとすることにより低融点の合
金となることがわかつた。 Furthermore, as a result of various experiments, In1~45W%, Sn13.6
It was found that by setting the content to ~30W% and the balance being Ga, an alloy with a low melting point can be obtained.
以上の三元合金による金属は、従来のHgと同
様に使用に際してこれを金属粉末と混合・練和し
て歯科用充填材料として用いるものであるが、本
金属は合金であるために、従来HgがAg＋Sn、
Ag＋ZnまたはAg＋Sn＋Zn等の二元以上の金属
粉末を混合していたのに対しこれらの金属粉末は
勿論のことAg、SnまたはZnの単体粉末でも充分
に歯科用金属として使用可能である。 The above ternary alloy metal is used as a dental filling material by mixing and kneading it with metal powder in the same way as conventional Hg, but since this metal is an alloy, conventional Hg is Ag+Sn,
Although binary or more metal powders such as Ag+Zn or Ag+Sn+Zn were mixed, not only these metal powders but also single powders of Ag, Sn, or Zn can be used sufficiently as dental metals.
一般にある温度における液体はその凝固点が低
いほどその液体が持つ内部エネルギーは大きい。
従つて本発明はGa単体や、Ga−In二元系に比べ
てもある金属や合金に対する拡散速度は増大す
る。 Generally, the lower the freezing point of a liquid at a certain temperature, the greater the internal energy it has.
Therefore, in the present invention, the diffusion rate for certain metals and alloys is increased compared to Ga alone or a Ga-In binary system.
また、本発明は三元系としたことにより表面張
力を下げることができ、他金属へのぬれ性を向上
させ、さらに多元系であるために他金属または合
金への拡散を増大させることができる。 Furthermore, since the present invention is a ternary system, it is possible to lower the surface tension, improve wettability to other metals, and furthermore, because it is a multi-component system, it is possible to increase diffusion into other metals or alloys. .
以上の本発明によると、融点を低下させて液状
範囲を一段と拡大させることができて作業性を高
めると共に歯科用金属材料と混合、練和したとき
にその硬化速度が実用上適当なものとなり、耐食
性にもすぐれ、歯質および他の金属に対してすぐ
れたぬれ性を有し、歯牙の窩洞充填に用いたとき
に歯質との間に隙間が生ずることもない。 According to the present invention, the melting point can be lowered to further expand the liquid range, improving workability, and when mixed and kneaded with dental metal materials, the curing speed is suitable for practical use. It also has excellent corrosion resistance, has excellent wettability to tooth substance and other metals, and does not create gaps between it and the tooth substance when used to fill tooth cavities.
また、生体反応における毒性は全く無く、歯科
用金属として適するものであり、単に窩洞修復の
みならず義歯の修復および歯科用の鋳造金属床の
修復に用いて有用である。 In addition, it has no toxicity in biological reactions and is suitable as a dental metal, and is useful not only for cavity repair but also for denture repair and dental cast metal floor repair.
Claims (1)
材料において、In1〜45W％、Sn13.6〜30W％お
よび残部Gaとしたことを特徴とする歯科用金属
材料。1. A dental metal material used by mixing and kneading metal powder, characterized in that it contains 1 to 45 W% of In, 13.6 to 30 W% of Sn, and the balance is Ga.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58240933A JPS60135547A (en) | 1983-12-22 | 1983-12-22 | Dental metallic material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58240933A JPS60135547A (en) | 1983-12-22 | 1983-12-22 | Dental metallic material |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61216704A Division JPS62270745A (en) | 1986-09-13 | 1986-09-13 | Dental metallic material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60135547A JPS60135547A (en) | 1985-07-18 |
| JPS6237106B2 true JPS6237106B2 (en) | 1987-08-11 |
Family
ID=17066798
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58240933A Granted JPS60135547A (en) | 1983-12-22 | 1983-12-22 | Dental metallic material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60135547A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62270745A (en) * | 1986-09-13 | 1987-11-25 | Tokuriki Honten Co Ltd | Dental metallic material |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5548091B2 (en) * | 1973-06-20 | 1980-12-04 |
-
1983
- 1983-12-22 JP JP58240933A patent/JPS60135547A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60135547A (en) | 1985-07-18 |
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