Abstract

One fundamental dimension of long-lasting dental treatments which has attracted many researchers is the fracture strength of dental porcelains. To contribute to this aspect of research, we have compared the fracture strength of two types of porcelains in metal-ceramic restorations: Vita VMK 95 and Noritake. To carry out this research, a standard die made of stainless steel was prepared.  Then molds were prepared from the metal and chalk die. In order to create metal foundations with equal thickness, Adapta Krupp sheets were used. After shaping the models with cheap metal, the frames were randomly divided into two groups of eleven. For one group Vita VMK 95 and for the other group Noritake porcelains were used for powdering. To measure the fracture strength of the samples, Hounsfield Test Equipment was utilized. Statistical analysis of the findings shows that Vita is significantly stronger than Noritake.

Key words: Vita VMK 95, Noritake, Adapta sheet, porcelain, frame.