Casting accuracy at different mould temperatures.

ABSTRACT

Three gold alloys were cast to moulds at 500 degrees C, 600 degrees C and 700 degrees C. The accuracy of test crowns was assessed by measuring the space between the margin of the casting and the shoulder of the brass dis. The accuracy of 60 castings for clinical crown restorations was measured by means of impression material. Results showed that best accuracy was achieved at the highest temperature.