Interactive effect of stress and temperature on creep of PFM alloys.
J Dent Res
; 64(8): 1094-9, 1985 Aug.
Article
em En
| MEDLINE
| ID: mdl-3894455
ABSTRACT
The creep rates of six alloys for porcelain-fused-to-metal (PFM) restorations were determined as a function of flexural stress and temperature. Although two Pd-Cu alloys demonstrated excellent resistance to creep at low-stress, high-temperature conditions, they were especially susceptible to deformation at high stresses and temperatures near the glass transition temperature of dental porcelains. In comparison, a Ni-Cr alloy and a Pd-Co alloy demonstrated superior creep resistance at high-stress, low-temperature conditions. This indicates a relatively low potential for deformation due to stresses which may result from a thermal contraction differential between these two alloys and incompatible dental porcelains.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Ligas Dentárias
Idioma:
En
Ano de publicação:
1985
Tipo de documento:
Article