4种根管封闭剂根尖封闭效果的体外实验研究  

Apical sealing ability evaluation of four root canal sealers

作　　者：李秀丽 杨玥[1] 侯本祥[1] 张琛[1] 

机构地区：[1]首都医科大学口腔医学院牙体牙髓科,100050 [2]顺义区医院口腔科

出　　处：《北京口腔医学》2014年第4期200-203,共4页Beijing Journal of Stomatology

基　　金：国家自然科学基金(81200783);北京市卫生系统高层次卫生技术人才培养计划(2013-3-039)

摘　　要：目的比较4种根管封闭剂采用热牙胶垂直加压技术充填时的根尖封闭效果。方法 78颗离体单根管牙ProTaper机动镍钛锉系统冠向下法根管预备至F2,预备好的牙齿随机分为A、B、C、D 4个实验组(每组12颗),E、F、G 3个对照组(E、F组各12颗,G组6颗),A、B、C、D组分别使用AH-Plus根管封闭剂、2 Seal easymix根管封闭剂、iRoot SP根管封闭剂、Cortisomol根管封闭剂,及0.06锥度牙胶尖,采用热牙胶连续波充填技术进行根管充填,E组为阴性对照,F组为阳性对照组,G组为空白对照组。用染料渗透法和透明牙法对标本进行处理后对染料渗入根管长度进行分析,采用单因素方差分析对结果进行数据统计。结果测量不同根管封闭剂充填组染料渗透长度:C组iRoot SP根管封闭剂(0.3005±0.21808)mm明显低于B组2 Seal easymix根管封闭剂(1.4665±0.97767)mm和D组Cortisomol根管封闭剂(1.2753±0.47919)mm(P<0.05);低于A组AH-Plus根管封闭剂(0.7875±0.46930)mm,无统计学差异。结论 iRoot及AH-Plus在采用热牙胶垂直加压根充技术进行根管充填时根尖封闭效果可能较其它材料更理想。Objective To evaluate the apical sealing ability of four root canal sealers AH-Plus, 2 seal easymix, iRoot SP and Cortisomol with ObturaⅡ method. Methods Seventy-eight isolated human single canal teeth were divided randomly into 4 experimental groups A, B, C and D （12 teeth in each group）and 3 control groups E, F and G （12 teeth in group E and F, 6 in group G）. The root canals in group A,B,C and D were filled with gutta-percha and the sealers AH-Plus,2 Seal Easymix, iRoot- SP and Cortisomol using continuous wave of condensation techniques. The apical microleakage was evaluated by the dye penetration method. Linear dye penetration was measured with tooth clearing technique. Results Mean depth of leakage in group C （0. 3005 ± 0. 21808） mm was lower than in group B（ 1. 4665 ± 0. 97767） mm and D（ 1. 2753 ± 0. 47919） ram. There were significant differences between group C and B, group C and D（ P 〈 0. 05）. However, there was no significant difference between the group C and A （0. 7875± 0. 46930）mm. Conclusion AH-Plus and iRoot SP showed a greater apical sealing ability than 2 seal easymix and Cortisomol. No difference was found between AH Plus and iRoot SP in apical sealing ability.

关 键 词：根管封闭剂 热牙胶垂直加压充填技术 封闭效果 微渗漏 

分 类 号：R781.05[医药卫生—口腔医学]