title: Testing of metal-ceramic joint using scanning acoustic microscopy.
abstract: The objective of the investigation was to compare the results obtained from examination of titanium-porcelain joints by means of both scanning acoustic microscopy (C-SAM) and scanning electron microscopy (SEM). A dental porcelain (Ducera, Dental GmbH) mechanically compatible with titanium was fired to sand-blasted or electrolytically polished commercially pure titanium (grade 1) specimens. The firing was carried out in an ordinary dental furnace according to manufacturer's instructions. There was a good correlation between the C-SAM and SEM methods regarding the ability to detect air-filled defects in the porcelain/titanium interface. The results show that the C-SAM method, being non-destructive as well as time-and-money-saving, can be useful in the testing of metal-ceramic joints.
authors.affiliation: Department of Prosthetic Dentistry, University of Helsinki.
authors.forename: M
authors.initials: M
authors.lastname: Könönen
authors.forename: J
authors.initials: J
authors.lastname: Kivilahti
mesh_terms: D003776:Dental Porcelain; D008422:Materials Testing; D016876:Metal Ceramic Alloys; D008853:Microscopy; D008855:Microscopy, Electron, Scanning; D014025:Titanium; D014465:Ultrasonics
chemical_list: D016876:Metal Ceramic Alloys; D003776:Dental Porcelain; D014025:Titanium