Scanning and electron microprobe analysis of metal-porcelain interface.
The purpose of this study was to analyze the interfacial region between porcelain and base metal alloy using scanning electron microscope with electron microprobe analyzer. Results gave evidence of formation of Nio and Cr2O3 with evidence of more migration of NiO towards the porcelain. Sandblasting of oxidized and fired metal samples (simulating firing of porcelain without its application) showed appearance of crystalline structure of Ni and Cragain, indicating delamination of oxide layer by sandblasting. At porcelain side analysis showed NiO and Cr2O3 and iron oxide plus Si, K, CI, Sn and Cu.
Ibrahim
R M
RM
Crown and Bridge Dept., Faculty of Oral and Dental Medicine, Cairo University.
D003735:Dental Casting Technique; D003776:Dental Porcelain / Q000032:analysis; D004577:Electron Probe Microanalysis / Q000706:statistics & numerical data; D016876:Metal Ceramic Alloys / Q000032:analysis; D008855:Microscopy, Electron, Scanning / Q000706:statistics & numerical data; D013499:Surface Properties
D016876:Metal Ceramic Alloys; D003776:Dental Porcelain