Marginal fit of cast titanium copings related to investments and casting techniques

ABSTRACT

The purpose of this study was to evaluated marginal fit of cast titanium coping according to the following conditions 1) three investment types, 2) use of a doll made up with the three investments and the ring filling with conventional phosphate investment; 3) use of die relief; 4) surface treatment. Casting was made using appropriate equipment for titanium alloys. The results obtained led us to conclude that it is possible to obtain titanium casts with satisfactory marginal it using adequate techniques; rematitan investment led to good results, although they may not used without die relief, especially when the cover technique is employed; Ticoast S + L was the least critical regarding casting techniques, but requires drilling to obtain good fit