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J Dent Res 40(6): 1136-1141, 1961
© 1961 International and American Associations for Dental Research
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An Impact Test for Dental Porcelain

P. R. KULP 1, P. W. LEE 1, and J. E. FOX 1

1 Dentists' Supply Company of New York, York, Pennsylvania

A dropping-weight impact test for dental porcelain has been developed which correlates qualitatively with observed clinical behavior. Significant impact-strength differences were found between porcelains, the extent or degree of the differences being controlled by the specimen shape and exact test conditions. Vacuum-fired porcelains were consistently stronger than air-fired porcelains when measured by this test method.

Submitted on June 13, 1960






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