不同根管充填方法对椭圆形根管根尖封闭效果的影响  

Evaluation of apical sealing ability with different obturation techniques in oval-root canals in vitro

作　　者：杨勤[1] 童方丽[2] 杨明[2] 梁彩英[1] 元佩燕[2] 

机构地区：[1]广东省口腔医院.南方医科大学附属口腔医院特诊中心,广东广州510280 [2]广东省口腔医院.南方医科大学附属口腔医院牙体牙髓病科

出　　处：《口腔疾病防治》2016年第7期407-410,共4页Journal of Prevention and Treatment for Stomatological Diseases

基　　金：广东省医学科研基金(A2014105)

摘　　要：目的采用染料渗透法和透明牙技术观察不同根管充填方法对椭圆形根管根尖封闭效果的影响。方法 42颗椭圆形根管的离体前磨牙经机用镍钛锉完成根管预备后,随机分成3组,每组14颗牙,以i Root SP作为根管封闭剂,分别采用单尖充填法(A组)、改良热牙胶连续波垂直加压充填法(B组)和冷牙胶侧方加压充填法(C组)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(1.34±0.33)mm,B组染料渗入深度为(0.84±0.40)mm,C组染料渗入深度为(1.13±0.33)mm,A组与B组染料渗入深度的差异具有统计学意义(P=0.004),A组与C组、B组与C组间差异均无统计学意义(P=0.198和P=0.072)。结论以i Root SP作为根管封闭剂,改良热牙胶连续波垂直加压充填法充填根管可以使椭圆形根管获得更好的根尖封闭效果。Objective To evaluate the apical sealing ability of different obturationtechniques in oval-root canals.Methods After root canals shaping with Mtwo instruments, 42 premolars with oval-root canals were randomly divided into 3 groups of 14 teeth each. Group A wereobturated by single-cone technique. Group B were obturated by modified continuous wave condensation technique. Group A were obturated by lateral condensation. IRoot SP was used as root canal sealer in all groups. The apical leakage was evaluated by dye penetration method and transparent teeth technique.Results Mean depth of leakage was（1.34 ± 0.33） mm for group A,（0.84 ± 0.40） mm for group B and（1.13 ± 0.33）mm for group C. There was significant difference between group A and group B（P = 0.004）. while no significant difference was found between group A and group C（P = 0.198）, group C and group C（P = 0.072）. Conclusion The oval-root canalobturated withmodified continuous wave condensation withi Root SP as sealercan get a goodapical sealing ability.

关 键 词：根管充填 椭圆形根管 根尖封闭性能 染料渗透法 透明牙技术 

分 类 号：R781.3[医药卫生—口腔医学]