• Xiaoming Liao

      Articles written in Bulletin of Materials Science

    • Synthesis and properties of dental zirconia–leucite composites

      Ming Kang Xiaoming Liao Guangfu Yin Xun Sun Xing Yin Lu Xie Jun Liu

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      The dental zirconia–leucite composites were synthesized by high temperature solid-state method using potash feldspar, potassium carbonate and zirconia as raw materials. The mechanical properties and the coefficient of thermal expansion (CTE) of the prepared zirconia–leucite composites were tested. The results show that the bending strength, the fracture toughness and the metal–ceramic bonding strength of the prepared samples are about 110 MPa, 3.5 MPa/m1/2 and 45 MPa, respectively. The CTE was about 13.73×10$^{-6}\ ^\circ $C-1 and close to that of Ni–Cr dental alloy (14.0×10$^{-6}\ ^\circ $C-1). The results indicate that the introduction of zirconia is beneficial to the improvement in the mechanical properties and CTE adjustment of porcelain material. The clinical application of the zirconia–leucite composites with good metal–ceramic bonding strength in the dental restoration could be envisioned.

    • In vitro bioactivity and cytocompatibility of tricalcium silicate

      Xiaoming Liao Hongyang Zhu Guangfu Yin Zhongbing Huang Yadong Yao Xianchun Chen

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      The in vitro bioactivity of tricalcium silicate (Ca3SiO5) ceramics was investigated by the bone-like apatite-formation ability in simulated body fluid (SBF), and the cytocompatibility was evaluated through osteoblast adhesion and proliferation assay. The results show that the Ca3SiO5 ceramics possess bone-like apatite formation ability in SBF. In vitro cytocompatible evaluation reveals that osteoblasts adhere and spread well on the Ca3SiO5 ceramics, indicating good bioactivity and cytocompatibility.

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