【摘要】 目的对比3MESPE RelyXTMARC黏接水门汀在干燥和湿润两种状态下对钛合金嵌体微渗漏的影响。方法选择20颗因阻生新拔除的完整无隐裂、无磨耗的第三磨牙,随机分成2组,制备成邻嵌体洞,分别在干燥和湿润两种状态下,用3MESPE RelyXTMARC黏接水门汀粘结钛合金嵌体,用体视显微镜观测嵌体密合度和嵌体微渗漏。结果两种粘接法嵌体密合度无显著差异(P>0.05),微渗漏深度有极显著差异(P<0.001)。结论以釉质壁为主的窝洞干粘结效果显著,以牙本质壁为主的窝洞湿粘结效果好。更多还原

【Abstract】 Objective To study the influences of dry or wet bonding cement on microleakge of Ti alloy inlay.Methods 20 intact human molars extracted for impact reasons were divided into two groups at random.A class Ⅱ cavity with fixed dimension was made in each tooth.Ti alloy inlays in each group were bonded in cavities under dry or wet condition respectively.The crevice width and microleakge depth were measured by stereomicroscope between inlay and cavity walls in different groups.Results There were no differences in the widths.The microleakge in the dry bonding group was significantly lower than that in wet bonding group(P<0.001).Conclusions Dry bonding was good for enamel wall and wet bonding was effective on dentin wall.Hydrophilia bonding cement was recommended in dry bonding of enamel and dentin.更多还原