Thermal stresses in metal-ceramic specimens for the ISO crack initiation test (three-point flexure bond test).


OBJECTIVES At the October 1996 meeting of the ISO/TC106/SC 2/WG 1 working group, a special three-point flexure test for the characterization of the metal-ceramic bond was incorporated in the standard (ISO CD 9693). Due to the fabrication process, like real porcelain-fused-to-metal (PFM) restorations, the specimens contain thermal (eigen-) stresses upon… (More)


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