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Materials Science Thermal Shock Resistance of Porcelain Discs

Division of Dental Materials, Department of Restorative Dentistry, School of Dentistry, Medical College of Georgia, Augusta, Georgia 30912

P.H. Dehoff

Department of Mechanical Engineering and Engineering Science, University of North Carolina at Charlotte, Charlotte, North Carolina 28223

S.W. Twiggs

Division of Dental Materials, Department of Restorative Dentistry, School of Dentistry, Medical College of Georgia, Augusta, Georgia 30912

P.C. Lockwood

Division of Dental Materials, Department of Restorative Dentistry, School of Dentistry, Medical College of Georgia, Augusta, Georgia 30912

Thermal shock testing of opaque porcelain-body porcelain discs and body porcelain discs was performed on three porcelain products. Significant differences exist between the mean failure temperature differentials, T, for the composite opaque-body porcelain discs. The residual tensile stress and the transient tensile stress distribution are more severe for one of the three porcelains tested.

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• Anusavice, K.J.; Twiggs, S.W.; DeHoff, P.H.; and Fairhurst, C.W.: Correlation of Thermal Shock Resistance with Thermal Compatibility Data for Porcelain-Metal Systems, J Dent Res 61:419-422, 1982.[Abstract/Free Full Text]
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Journal of Dental Research, Vol. 62, No. 10, 1082-1085 (1983)
DOI: 10.1177/00220345830620101601


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