Bond strength of porcelain to dental alloys – an evaluation of two test methods -

Two methods for measuring shear strengh of the porcelain-metal interface, a rod/disk-push test and a cube/cube-push test, were compared using the same metals and porcelain material. Both types of specimen showed evidence of complex stress distribution at the interface during loading and fracture line located mainly in the opaque porcelain layer. Both methods were thus mainly a test of the “strength” of the porcelain at the interface.

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