Chinese Journal of Tissue Engineering Research ›› 2010, Vol. 14 ›› Issue (42): 7869-7872.doi: 10.3969/j.issn.1673-8225.2010.42.019

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Influence of different surface treatments on shear bond strength of zirconia ceramic to resin cement

Zhang Lei, Hu Shu-hai, Ren Xiang, Zuo En-jun   

  1. College of Stomatology, Dalian Medical University, Dalian   116044, Liaoning Province, China
  • Online:2010-10-15 Published:2010-10-15
  • Contact: Hu Shu-hai, Doctor, Professor, Master’s supervisor, College of Stomatology, Dalian Medical University, Dalian 116044, Liaoning Province, China shuhaihu4141@yahoo.com.cn
  • About author:Zhang Lei★, Master, Physician, College of Stomatology, Dalian Medical University, Dalian 116044, Liaoning Province, China
  • Supported by:

    Scientific and Technological Planning Program of Science and Technology Bureau of Liaoning Province, No.2009225009-4*

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Abstract:

BACKGROUND: At present the surface treatment of zirconia ceramics remains controversial. Some scholars believe that the traditional silanization treatment can not improve the bond strength of zirconia ceramics, while it has reported that silanization treatment or treatment after sandblast can improve the bond strength of zirconia ceramics.
OBJECTIVE: To evaluate the effect of different surface treatments on bond strength of zirconia ceramics to resin cement, and to find proper surface treatment for bonding oral zirconia ceramic.
METHODS: According to surface treatment, 50 zirconia ceramic sheets (15 mm×10 mm×3 mm) after sintering were divided into five groups: control group (no treatment), silane coupling agent group, sandblast group, sandblast plus silane coupling agent group, sandblast plus silica coating and silane coupling agent group. All samples were bonded to resin cement and subjected to a shear bond strength test in a fatigue testing machine. Fracture mode of each sample tested was observed.
RESULTS AND CONCLUSION: Shear bond strength values of four experimental groups was significantly increased compared with control group (P < 0.05), reached the peak in sandblast plus silane coupling agent group. Except for sandblast group and sandblast plus silica coating and silane coupling agent group, sandblast plus silane coupling agent group and sandblast plus silica coating and silane coupling agent group (P > 0.05), the significant differences were showed between every two groups (P < 0.05). Sandblast and silane coupling agent can effectively enhance the shear bond strength of zirconia ceramic to resin cement. Sandblast combined with silane coupling agent is the most proper surface treatment for bonding zirconia ceramic. Silica sol cannot affect bond strength of zirconia ceramic to resin cement.

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