Silver tin amalgam

Japanese: 銀スズアマルガム - ぎんすずあまるがむ
Silver tin amalgam

… [Nakahara Katsutoshi]
[Amalgam for filling cavities]
In dentistry, it began to be used for fillings in France in the 19th century, but was standardized in the United States around 1918 for filling cavities, and has been used ever since. Silver amalgam and copper amalgam were once used, but now silver-tin amalgam is more commonly used, in which silver-tin alloy powder is mixed with mercury and used to fill defects caused by cavities and harden inside the tooth. Silver-tin amalgam expands slightly when it hardens, making it excellent at sealing defects. …

*Some of the terminology that mentions "silver tin amalgam" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…【中原 勝儼】
[虫歯充てん用のアマルガム]
 歯科では,19世紀フランスで充てん用に用いられはじめたが,1918年ころになってアメリカで虫歯の充てん用に規格化され,以後今日まで利用されている。かつては銀アマルガムと銅アマルガムが用いられてきたが,現在は銀とスズとの合金の粉を水銀で練り,虫歯で生じた欠損部に充てんして歯の中で固まらせる銀スズアマルガムが多く用いられている。銀スズアマルガムは,硬化時にわずかに膨張するので,欠損部の封鎖性に優れる。…

※「銀スズアマルガム」について言及している用語解説の一部を掲載しています。

出典|株式会社平凡社世界大百科事典 第2版について | 情報

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