E-Q根管充填系统的实验研究

目的 :体外评价E -Q根管充填系统的充填质量和封闭根尖能力。方法 :离体单根管恒牙 5 5个 ,随机分为 3组 ,每组 17个 ;通过X线与根尖微渗漏实验 ,比较E -Q根管充填系统 (包括A组 :固核载体插入技术 ,B组 :热牙胶旋转推入技术 )和冷牙胶侧方加压充填技术 (C组 )的充填质量和封闭根尖能力。结果 :糊剂超充以A组最多 ,B组次之 ,C组最少 (P <0 .0 5 ) ;近中远中向根充质量以C组最好 (P <0 .0 5 ) ,颊舌向各组差别无统计学意义 ;封闭根尖能力以A组最强 ,B组次之 ,C组最差 (P <0 .0 5 )。结论 :E -Q根管充填系统有较好的封闭根尖能力 ,但X线充填质量差于侧方加压技术

Evaluation of E-Q system endodontic obturation technique in vitro

AIM:To evaluate the quality of obturation and sealability of E-Q system endodontic obturation technique in vitro .METHODS:A total of 55 freshly extracted human mature single root teeth were divided into three identical groups of 17 teeth.Then the effect and sealability of lateral condensation of gutter-percha or E-Q system were assessed by radiography and microleakage.RESULTS: In vitro study,apical extrusion of sealer was most in group A,less in group B,and least in group C among three groups( P <0.05).For radiographic quality of obturation,Group C achieved significantly better score than Group A and B from the mesio-distal views( P <0.05).There was no statistically significant difference among three groups from the bucco-lingual views.CONCLUSION:Under laboratory conditions E-Q system had better sealability but poor radiographic quality than lateral condensation.