In this study a method of measuring interfacial shear stresses from the curvatures of bimaterial dental porcelain-gold strips is described. Stresses were calculated for different porcelain thicknesses and as a function of temperature. The interfacial stresses found ranged from 1,000 psi tensile stress to 3,000 psi compressive stress on the porcelain side of the interface for porcelain thicknesses commonly used in dental restorations.
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