纯钛嵌体微渗漏的对比研究

目的评价纯钛嵌体分别采用三种不同粘结材料粘结的微渗漏情况，为临床应用提供参考依据。方法选择36颗健康上前磨牙，随机分为3个实验组，每组12颗牙。分别用玻璃离子水门汀、树脂改良型玻璃离子水门汀和树脂水门汀粘结固位。统计学方法，应用sPss10．0统计学软件，采用Kruskal—Wallis检验和Mann—Whitney U秩和检验，取α=0．05为显著性标准。结果①同一种材料嵌体用不同粘结材料粘结，其微渗漏程度差异有统计学意义（P〈0．05）；②轴壁的微渗漏较龈壁的微渗漏差异有统计学意义（P〈0．05）。结论①树脂改良型玻璃离子水门汀和树脂水门汀的抗微渗漏性能优于玻璃离子水门汀。②轴壁的微渗漏较龈壁的微渗漏明显减小。

Compartive study of microleakage of titanium composite inlays

Objective To compare the effect of three types of luting agents on finessing the titanium inlays to protect the microleakage. Methods Thirty-six healthy maxillary premolars were randomly assigned to three groups, 12 in each. The group I,Ⅱ and Ⅲ treated with glass ionomer, resin-modified glass ionomer and composite resin as luting agents. Groups were compared by one-way analysis of variance and post Hoc multiple comparison test whenever appropriate. The statistical result was set at 0.05 as significant. Results ①The titanium inlays treated with different luting agents demonstrated significantly different degree microleakage.②The microleakage at enamal margins was different to the microleakage at the cementum margins.Conclusion ①The effect of resin-modified glass ionomers and resin luting agents on protecting microleakage is superior to glass ionomers luting agents;②The microleakage at enamal margins was significantly lower than the microleakage at the cementum margins.