根管封闭剂iRoot SP对椭圆形根管根尖封闭性能的评价

Apical sealing ability of iRoot SP in oval-root canals in vitro

目的:采用染料渗透法和透明牙技术评估根管封闭剂iRoot SP对椭圆形根管根尖封闭性能。方法:28颗椭圆形根管的离体牙完成根管预备,随机分成2组,分别用AH Plus(A组)和iRoot SP(B组)为根管封闭剂,采用改良连续波充填技术完成根管充填,通过根尖染料渗透实验和透明牙技术,观察根尖微渗漏情况。结果:A组染料渗入深度为(0.92±0.26)mm,B组为(0.84±0.40)mm,2组间的染料渗入深度比较差异无统计学意义(t=0.506,P>0.05)。结论:iRoot SP对椭圆形根管的根尖封闭性能与AH Plus不相上下。

Objective To evaluate the apical sealing ability of iRoot SP root canal sealer in oval-root canal. Methods After root canals were instrumented by Mtwo, 28 premolars with oval-root canal were randomly divided into 2 groups, 14 teeth in each. The root canals were obturated with AH Plus（group A） and iRoot SP（group B） by modified continuous wave condensation technique. The apical leakage was evaluated by dye penetration method and transparent teeth technique. Results Mean depth of leakage was（0.92 ± 0.26） mm for group A and（0.84 ± 0.40） mm for group B. There was no significant difference between the two groups（t = 0.506,P〈 0.05）. Conclusion The apical sealing ability of iRoot SP is equivalent to AH Plus in oval-root canal.