Abstract
Yield strength of dental casting silver alloys was obtained from a compressive test, and the influence of size of small casting specimens and testing conditions upon yield strength and compressive strength was investigated.
Four factors (diameter of specimen, L/D ratio of specimen, testing speed, lubricant) were analyzed by variation analysis using the orthogonal table L9.
Yield strength and compressive strength of all alloys were significantly affected by diameter of specimen and specimens of 2.0 mm in diameter had higher strength.
According to this study small specimen (2.0 mm in diameter, 3.0〜4.0 mm in length) was found to be useful to evaluate strength of dental silver alloys economically.
