• Chinese Journal of Lasers
  • Vol. 36, Issue 5, 1273 (2009)
Zhang Lijun1、*, Gao Bo1, Wang Zhongyi1, Gao Yang1, Zou Chengrong2, and Zhang Chunbao1
Author Affiliations
  • 1[in Chinese]
  • 2[in Chinese]
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    Zhang Lijun, Gao Bo, Wang Zhongyi, Gao Yang, Zou Chengrong, Zhang Chunbao. Evaluation of Bond Characteristics between Porcelain and Titanium Fabricated by Rapid Laser Forming[J]. Chinese Journal of Lasers, 2009, 36(5): 1273 Copy Citation Text show less

    Abstract

    The bond characteristics of titanium porcelain Noritake Ti-22 bonded to pure titanium fabricated by laser rapid forming (LRF) technigue is evaluated. Titanium specimens are fabricated using commercial titanium powder and laser raped forming system, based on the optimized processing parameters. And the coefficient of thermal expansion (CTE) of LRF titanium is evaluated. The bond strength is analyzed with three-point-bonding test according to ISO9693 Standard, and the titanium surface after debonding is analyzed by scanning electron microscope (SEM) and energy disperse spectroscopy (EDS). There is no significant difference in the CTE between cast titanium and LRF titanium. The CTE of LRF titanium matchs that of Ti-22 porcelain. All titanium-porcelain specimens prepared from LRF titanium exhibit a mixed failure mode of cohesive and adhesive failure. The bond strength of LRF titanium and Ti-22 is above the lower limit value in the ISO9693 Standard (25 MPa). Laser rapid forming of titanium alloy seems to be an alternative technique to conventional casting of dental alloys for porcelain fused to metal restorations.
    Zhang Lijun, Gao Bo, Wang Zhongyi, Gao Yang, Zou Chengrong, Zhang Chunbao. Evaluation of Bond Characteristics between Porcelain and Titanium Fabricated by Rapid Laser Forming[J]. Chinese Journal of Lasers, 2009, 36(5): 1273
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