Effect of TiO2 on the sinter crystallization of nepheline glasses for dental application

TiO2 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‐crystal...

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Bibliographic Details
Published inInternational journal of applied glass science Vol. 13; no. 4; pp. 610 - 619
Main Author Alzahrani, Ali S.
Format Journal Article
LanguageEnglish
Published Westerville Wiley Subscription Services, Inc 01.10.2022
Subjects
Ceramic powders
Crystallization
Densification
dental biomaterials
Dental materials
Glass
glass ceramics
Heat treatment
Nepheline
NMR
sintering
Thermodynamic properties
Titanium dioxide
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Summary:TiO2 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.
ISSN:2041-1286
2041-1294
DOI:10.1111/ijag.16564