Dental Casting Alloys with a Low Content of Noble Metals
作者:
ØiloGudbrand,
GjerdetNils Roar,
期刊:
Acta Odontologica Scandinavica
(Taylor Available online 1983)
卷期:
Volume 41,
issue 2
页码: 111-116
ISSN:0001-6357
年代: 1983
DOI:10.3109/00016358309162310
出版商: Taylor&Francis
关键词: Dental materials;casting technique;fixed partial prosthesis
数据来源: Taylor
摘要:
Several physical properties such as strength (UTS and fracture and proof stress), modulus of elasticity, strain (elastic and plastic elongation), hardness, and hardening ability were determined for five low-gold alloys and two conventional gold casting alloys (types III and IV). The composition and the structure (pores and defects) of the cast tensile test specimens were also studied. The results showed that alloys with a low content of noble metals could have properties comparable to those of the traditional types III and IV dental gold casting alloys. A marked difference was seen in the plastic elongation (ductility). A great number of defects (pores and oxide inclusions) were also observed, especially in the specimens with a high content of both palladium and silver.
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