ObjectiveThis study aimed to determine the effect of recasting in vacuum with argon on the chemical compo-sition of cobalt-chromium (Co-Cr), commercially pure titanium (cpTi), palladium-based (Pd-based), and aurum-platinum (Au-Pt) ceramic alloys.MethodsWithout adding new alloys, Co-Cr, cpTi, Pd-based, and Au-Pt ceramic alloys were recast one to three times under the condition of vacuum compressive casting with argon. Before recasting, four previously cast ceramic alloys were treated with the corresponding method. After polishing, the chemical composition of the four ceramic alloys recasted one to three times were determined by energy-dispersive spectrometry.ResultsNo significant difference was observed in the chemical composition of the four ceramic alloys recast 1-3 times (P>0.05).ConclusionUnder the condition of vacuum with argon, the recasting had no obvious influence on the chemical composition of Co-Cr, cpTi, Pd-based, and Au-Pt ceramic alloys.
