The purpose of this study was to evaluate the metal-ceramic bond strength (MCBS) of 6 metal-ceramic pairs (2 Ni-Cr alloys and 1 Pd-Ag alloy with 2 dental ceramics) and correlate the MCBS values with the differences between the coefficients of linear thermal expansion (CTEs) of the metals and ceramics. Verabond (VB) Ni-Cr-Be alloy, Verabond II (VB2), Ni-Cr alloy, Pors-on 4 (P), Pd-Ag alloy, and ...

The last 25 years have witnessed the introduction of a bewildering number of ceramic systems to the dental profession. Most of these systems have been introduced with little or no clinical testing. Laboratory studies of physical and mechanical properties of ceramics provide little predictive information regarding likely clinical survival rates. Early adopters of many of these new systems learne...

The purpose of this study is to examine the diffusion and thermal shock behaviour alternative dental silicates. samples derived from BaO-SiO2 system have been produced by melting process followed heat treatment. X-ray examinations indicated that amount orthorhombic sanbornite phase rised due treatment temperature as revealed peak intensities. alteration morphology was evident scanning electron ...