Novel method for the synthesis of a beta-tricalcium phosphate coating on a zirconia implant

作者：Stefanic Martin^*; Krnel Kristoffer; Kosmac Tomaz

来源：Journal of the European Ceramic Society, 2013, 33(15-16): 3455-3465.

DOI：10.1016/j.jeurceramsoc.2013.05.015

• Zirconia
• beta-Tricalcium phosphate
• Coating
• Adhesion
• Bioactivity

A novel method for the synthesis of a thin beta-tricalcium phosphate (beta-TCP) coating on zirconia implants has been developed. The synthesis procedure involves two steps: (i) rapid wet-chemical deposition of a biomimetic CaP coating and (ii) subsequent post-deposition processing of the biomimetic CaP coating, which includes a heat treatment at 900 degrees C followed by a short sonication in a water bath. The obtained beta-TCP coating showed a uniform and dense morphology with a thickness of approximate to 500 nm and displayed a roughness in the nanometre range (R-a = 28 nm). The beta-TCP coating demonstrated an apatite-mineralization ability in a simulated body fluid and enhanced the adsorption of serum proteins on the zirconia. Moreover, the beta-TCP coating adhered firmly to the zirconia substrate, developing a notable scratch resistance (L-c = 97 N) and tensile strength (52 MPa) and showed strong resistance towards mechanical forces present during implantation of the coated zirconia implant into the artificial bone.

• 出版日期2013-12