Titanium full crown casting: thermal expansion of investments and crown accuracy

摘要

Objectives; The aim of the present study was to establish a statistical model between thermal expansion values of investments and dimensional accuracy of cast titanium full crowns. Methods: Thermal expansion (TE) measurements were made on cylindrical specimens (5o× 20 mm) dried to constant mass and full Crown wax patterns wee prepared from metal dies having the same design. Castings were made using a one-chamber high-pressure casting Machine.