Metal ceramic bond after multiple castings of base metal alloy.

Statement Of Problem: Remelting previously cast metal can produce a critical change in metal-oxide composition at the dental alloy surface.

Purpose: The purpose of this study was to evaluate the effect of multiple castings on bonding of a single selected base metal and a dental ceramic, and to compare results from shear bond and 3-point-bending tests.

Material And Methods: Three groups of dental alloy (Remanium CSe) were prepared by mixing 50% fresh alloy to alloy remnants from previous castings.