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[Special ceramic hard substances as separating agents in cast-on procedures for the construction of precision
1Zentrum für Zahn-, Mund- und Kieferheilkunde der Universität Tübingen.
Deutsche Zahnarztliche Zeitschrift
|September 1, 1990
Abstract:
A new direct cast-on technology for the construction of telescopic crowns and precision attachments using non-precious alloys is described. Special ceramic hard substances, such as silicides and borides, are used as separating agents for the casting of the secondary structure. The application of the ceramic layers to the primary crown is accomplished with a chemical vapor deposition method. The layer thickness can be controlled and may range between some hundred nanometres and up to a few micrometres. The attainable gaps between primary and secondary casting range between 1 and 8 microns after separating and finishing.