eth”描述了当? 时采用的各种修复材料。?☺ 1756年,描述了用蜡制取印模,并用煅石膏灌注模型。?☺ 1770年,低熔合金用于牙科。?☺ 1792年,法国人De Chemat获得了瓷牙制作方法的专利。Рe Washington’s teeth, contrary to "common knowledge" were not made of wood. They were made from whaleboneРDentures prior to 1850 generally did not fit well .?teeth were made from a variety of materials including - in addition to whalebone, walrus and hippopotamus tusks - china, earthenware, tortoise shell, coral and more. Even human teeth were harvested from battlefields, hence the term "Waterloo Dentures".Р3. 19世纪口腔材料的快速发展期Р☺ 19世纪中期银汞合金、氧?化锌丁香酚水门汀和磷酸锌水?门汀相继出现,并一直沿用至今。Р☺ 19世纪中期开始采用硫化橡胶制作义齿基托。Р4. 20世纪至今口腔材料精制、改进期Р☺ 1937年出现的丙烯酸树脂基托材料,是合成高分子材料在口腔医学领域应用的最早实例。?☺ 1940年,纯钛及钛合金出现。?☺ 1957, 高速手机(牙钻)的应用。?☺1960年聚羧酸水门汀世。?☺ 1963年,美国学者Bowen取得牙科复合树脂的专利。?☺ 1971年开发出玻璃离子水门汀。?☺ 1978年,羟基磷灰石等生物陶瓷作为植入材料应用于口腔临床。
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