Abstract
AbstractTiO2 is known to play a key role in the controlled crystallization of “bulk processed nepheline glasses”. The aim of this study was to investigate the effect of adding TiO2 to a nepheline glass system made for powder processing to develop glass‐ceramics for dental applications via the sinter‐crystallization route. Three novel glass compositions based on the nepheline system were synthesized using the melt‐quench method. Glasses were designed to contain 3.0 mole % TiO2, 6 mole % TiO2, and one glass made free of TiO2. Experimental glasses were ground into fine powders and then heat‐treated at identical crystallization schedules. The addition of TiO2 hindered the densification process during the sinter‐crystallization heat treatment. TiO2 free glass was found to sinter crystallize into a desirable material. In this study, the use of 3 mole % TiO2 and less was found to be effective in controlling the thermal properties without hindering the densification process during sinter crystallization.
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