目的:探讨合适的渗透陶瓷表面处理方式。方法:以不同的表面处理为影响因素,将陶瓷片分为4组,采用水平推式剪切强度试验法,所得试验数据经统计学分析,考察不同表面处理方式与常规Bis-GMA类树脂粘接剂间的结合强度。结果:HF加硅烷、喷砂加硅烷组粘接抗剪强度24 h略增加,但差别无统计学意义,在模拟口腔环境下30 d后,抗剪强度下降十分明显,而热学硅涂层加硅烷组24 h后增加明显,与其它组对照差别有统计学意义(P<0.05),30 d后抗剪强度略有下降。结论:热学硅涂层加硅烷是渗透陶瓷粘接面的较好的处理方法。%Objective: The adequate surface conditioning method for GI-Ⅱ glass infiltrated alumia ceramic was investigated. Methods: The test specimens were divided into 3 groups (A. HF + silicone, B. sandblasting + silicone and C. thermal silicoating + silicone). Shear bonding strengths of porcelain bonded to dentin were tested. Results: The bond strength of group A and B slightly increased after one day but decreased sharply after 30 days. However, no statistical significance was observed. The group C showed a pronounced enlargement of bond strength after one day and had a durable bond after 30 days′ thermal cycling. It is statistically significant when group C was compared with group A and B. Conclusion: It can be inferred that silicoating method be a better way for glass infiltrated alumia ceramic bonding.
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