Oda Y, Ueno S, Kudoh Y
Department of Dental Materials Science, Tokyo Dental College, Chiba, Japan.
Bull Tokyo Dent Coll. 1995 Nov;36(4):175-82.
Generally, the dental casting method is used to fabricate dental prostheses made with metal. The method of fabricating dental prostheses from sintered titanium alloy has certain advantages: the elimination of casting defects, a sintering temperature that is lower than the melting point, and a shorter processing time. By examining (1) the properties of green, sintered compacts of titanium powder, (2) the effects of adding aluminum powder on the properties of green, sintered compacts of Ti-Al compound, and (3) the effects of adding copper powder on the properties of green, sintered compacts of Ti-Al-Cu compound, the authors developed a sintered titanium alloy on a trial basis. Because the properties satisfied the requirements of dental restorations, a powder metallurgical method of making dental restorations from this sintered titanium alloy was devised. Applications of such sintered titanium alloys for the metal coping of metal-ceramic crowns and denture base plates were discussed.
一般来说，牙科铸造法用于制造金属牙科修复体。用烧结钛合金制造牙科修复体的方法有一定优势：消除铸造缺陷、烧结温度低于熔点以及加工时间更短。通过研究（1）钛粉生坯和烧结坯体的性能，（2）添加铝粉对Ti-Al化合物生坯和烧结坯体性能的影响，以及（3）添加铜粉对Ti-Al-Cu化合物生坯和烧结坯体性能的影响，作者试制了一种烧结钛合金。由于其性能满足牙科修复体的要求，于是设计了用这种烧结钛合金制造牙科修复体的粉末冶金方法。讨论了这种烧结钛合金在金属烤瓷冠金属基底和义齿基托方面的应用。
