PHASE-CHANGES IN DENTAL AMALGAMS AT HIGHE R TEMPERATURES

Authors
VOJTECH D HOLECEK S JOSKA L
Citation
D. Vojtech et al., PHASE-CHANGES IN DENTAL AMALGAMS AT HIGHE R TEMPERATURES, Kovove materialy, 35(1), 1997, pp. 57-67
Citations number
7
Categorie Soggetti
Material Science","Metallurgy & Metallurigical Engineering
Journal title
Kovove materialy → ACNP
ISSN journal
0023432X
Volume
35
Issue
1
Year of publication
1997
Pages
57 - 67
Database
ISI
SICI code
0023-432X(1997)35:1<57:PIDAAH>2.0.ZU;2-1
Abstract
Two commercially available dental amalgams are studied with respect to microstructural and phase changes during exposition at higher tempera tures as compared with the temperature in the mouth. High-copper amalg am Ana 2000 was found to be more thermally stable than low-copper amal gam Safargam. Transformation of gamma-1 phase was observed only in the amalgam Safargam. Mercury released during this phase change reacts wi th silver-rich particles forming new amalgamation products. Evaporatio n of certain amount of mercury from amalgam surface is expected.