TOR- BZW. TUERANORDNUNG

摘要

1529984 Dental porcelain NATIONAL RESEARCH DEVELOPMENT CORP 13 Oct 1977 [14 July 1976] 29361/76 Heading C1J A dental porcelain composition includes as fluorescing agents 0À05-2 wt. per cent of CeO 2 and 0À1-0À5 wt. per cent of Tb 2 O 3 . Additionally one or more of the following oxides may be included: up to 0À1 wt. per cent Dy 2 O 3 ; up to 0À1 wt. per cent V 2 0 5 ; up to 0À2 wt. per cent Sm 2 O 3 ; and up to 0À2 wt. per cent Eu 2 O 3 .