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    • Keywords


      Zirconia; leucite; metal–ceramic bond; mechanical properties.

    • Abstract


      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.

    • Author Affiliations


      Ming Kang1 2 Xiaoming Liao1 Guangfu Yin1 Xun Sun3 Xing Yin4 Lu Xie4 Jun Liu2

      1. College of Materials Science and Engineering, Sichuan University, Chengdu 610064, China
      2. College of Material Science and Engineering, Southwest University of Science and Technology, Mianyang 621010, China
      3. Department of Urology, People’s Hospital of Jinghong, Jinghong 666100, China
      4. West China College of Stomatology, Sichuan University, Chengdu 610041, China
    • Dates

  • Bulletin of Materials Science | News

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    • Editorial Note on Continuous Article Publication

      Posted on July 25, 2019

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