不同树脂水门汀对Ceramage聚合瓷嵌体微渗漏的对比研究

摘要

AIM:To compare the microleakage of Ceramage polymerization ceramic inlay after cemented by 4 kinds of resin cement.METHODS:Mesial-occlusal cavity was prepared on 40 extracted caries free premolars.40 Ceramage polymerization ceramic inlays were made and were cemented into the cavities of the teeth by Rely X ARC, Rely X Unicem,Panavia F and ResiCem respectively(n =10).After 500 psychro-thermal cycles,the teeth were stained by fuchsin.The inlays were cut longetively and dye penetration was measured under microscope.RESULTS:In terms of shaft wall,significant difference in microleakage was found among the 4 groups by single factor analysis of variance (F=8.04,P<0.05).Microleakage of Group Rely X Unicem was significantly higher than that of group Re-ly X ARC (q=6.56),group Panavia F(q=5.579)and group ResiCem (q=5.158),(P<0.05).No significant difference was found among the other three groups(P>0.05).In terms of gingival wall,no statistically significant difference of microleakage was found among the 4 groups (F=2.112,P>0.05).In all groups,microleakage in gin-gival wall was significantly higher than that in shaft wall(P<0.05).CONCLUSION:The cementing effect of Rely X Unicem is the poorest among the 4 resin cements.%目的：对比4种树脂水门汀粘结Ceramage聚合瓷嵌体后的微渗漏，为临床选择树脂水门汀提供参考。方法：40个离体无龋前磨牙按嵌体制洞原则制备近中邻牙合面洞，Ceramage聚合瓷制作树脂嵌体后随机分为4组（n＝10），分别使用Rely X ARC、Rely X Unicem、Panavia F、ResiCem 4种树脂水门汀粘结嵌体。经冷热循环500次品红染色后，金刚砂片平行于牙体长轴沿近远中方向将修复体纵向剖开2次，在体视显微镜下测量染料渗入轴壁、颈壁的深度。结果：在轴壁4种材料微渗漏长度差异有统计学意义（F ＝8．04， P＜0．05）；Rely X Unicem组的微渗漏值高于Rely X ARC组（q＝6．56）、Panavia F组（q ＝5．579）、ResiCem组（q ＝5．158），差异有统计学意义（P＜0．05），其他3组间差异无统计学意义（P＞0．05）。颈壁：不同材料间的微渗漏差异无统计学意义（F＝2．112，P＞0．05）；同材料组的颈壁渗漏程度均显著高于轴壁（P＜0．05）。结论：Rely X Unicem对釉质的封闭效果较差；Rely X ARC、Panavia F、ResiCem均是粘结树脂嵌体理想的粘结剂。