Study on Properties of Leucite for Dental Porcelain Compositions

Abstract:

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Leucite crystal was prepared using SiO2-Al2O3-K2CO3-Na2CO3 as raw materials and adopting melt quenching and appropriate heat treatment temperatures. The crystal was characterized and analyzed by X-ray powder diffraction, the coefficient of thermal expansion, and biocompatibility. The results showed that appropriate Na2O could advance the growth of leucite, but high concentration facilitates the formation of KAlSiO4 crystal. The coefficient of thermal expansion was 24.52×10-6/°C at 600 °C, and thereby the coefficient could be adjusted by adding appropriate amount of leucite. The biocompatibility of leucite was almost the same as the Songfeng powder for clinical applications.

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Periodical:

Edited by:

Honghua Tan

Pages:

1522-1527

DOI:

10.4028/www.scientific.net/AMM.66-68.1522

Citation:

L. N. Sui et al., "Study on Properties of Leucite for Dental Porcelain Compositions", Applied Mechanics and Materials, Vols. 66-68, pp. 1522-1527, 2011

Online since:

July 2011

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$35.00

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