Chinese Journal of Tissue Engineering Research ›› 2011, Vol. 15 ›› Issue (8): 1425-1428.doi: 10.3969/j.issn.1673-8225.2011.08.023

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Influence of different surface treatments on shear bond strength to feldspathic machinable ceramics

Tan Xiao-lei1, Chen Jing-jing2, Deng Ai-ting1, Shen Wei1   

  1. 1Department of Stomatology, the 256 Clinical Department of Bethune International Peace Hospital of PLA, Shijiazhuang   050800, Hebei Province, China
    2Hebei Provincial Children’s Hospital, Shijiazhuang   050031, Hebei Province, China
  • Received:2010-09-07 Revised:2010-10-13 Online:2011-02-19 Published:2011-02-19
  • About author:Tan Xiao-lei★, Master, Attending physician, Department of Stomatology, the 256 Clinical Department of Bethune International Peace Hospital of PLA, Shijiazhuang 050800, Hebei Province, China tanxiaolei2000@126.com

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Abstract:

BACKGROUND: Feldspathic machinable ceramics are an essential all-ceramic material, it has been used in CAD/CAM chairside dental restoration system and has advantages with precision, rapid, efficiency and single visit. The bonding result is relevant to different surface treatments.
OBJECTIVE: To evaluate the shear bond strength of different surface treatments to feldspathic machinable ceramics.
METHODS: Thirty-two Vita MarkⅡ ceramic slices were randomly divided into four groups. Blank group: no treating; acid etching group: acid etching for 40 seconds using Porcelain Etchant and water washing for one minute; silane coupling agent group: treating with RelyX Ceramic Primer for one minute and drying; combination group: laying on silane coupling agent for one minute after acid etching and drying. All ceramic slices were cemented with RelyX Unicem. Shear bond strength was determined on an universal testing machine. The bonded surface was examined with scanning electron microscopy.
RESULTS AND CONCLUSION: The bond strength in combination group was significantly higher than the other three groups (P < 0.05), and the silane coupling agent group was superior to acid etching group and blank group (P < 0.05). The bonded surface of combination group was the most compact. Acid etching combined to silane coupling agent can significantly increase shear bond strength to feldspathic machinable ceramics.

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