2007•Key engineering materialsOpen access

The Influence of Nanosized Leucite on Dental Porcelain Properties

Jin Ping Yang, Jian Qing Wu, Ping Gen Rao, Chong Fei Xin, Dong Dan Chen

Abstract

The influence of leucite on dental porcelain properties is investigated in this paper. The nanosized leucite powder prepared by sol-gel method was added into a low-fusing temperature frit to fabricate dental porcelain fused to metal. The porcelains with different leucite contents were sintered at the temperatures ranging from 780° to 900°C. The flexural strength and the thermal expansion coefficient (TEC) of the dental porcelain containing leucite particles are evaluated. The micro- structure and phases of the porcelain are characterized and the mechanism that nanosized leucite particles strengthening the porcelain is discussed.

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Key concepts: Leucite, Frit, Materials science, Dental porcelain, Composite material, Thermal expansion, Flexural strength, Ceramic