Corrosion and creep resistance of some dental amalgam alloys.
Corrosion behaviour, creep values and phase transformation of conventional, admixed, unicompositional and two palladium-enriched amalgam alloys were investigated. Weight-loss method and solution analysis for dissolved metal ions were used. Creep values were determined after different immersion periods. X-ray diffraction was carried out to follow up phase transformation after different immersion periods and/or aging in dry air at 37 degrees up to one year. The results have shown that addition of palladium has improved corrosion and creep resistance and reduced gamma 1 to beta 1 phase transformation, and that gamma 2 did not appear again in high copper or palladium-enriched amalgam up to one year.
Moussa
T A
TA
Biomaterial Department, Faculty of Oral and Dental Medicine, Cairo University, Egypt.
Metwally
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WA
Habib
A N
AN
Abu-Tabl
Z M
ZM
D003343:Corrosion; D003723:Dental Amalgam / Q000737:chemistry*; D006801:Humans; D007101:Immersion; D008422:Materials Testing / Q000379:methods; D008855:Microscopy, Electron, Scanning; D010165:Palladium / Q000737:chemistry*; D012995:Solubility; D013314:Stress, Mechanical; D013499:Surface Properties; D013997:Time Factors; D014961:X-Ray Diffraction
D010165:Palladium; D003723:Dental Amalgam