两种方法预备根管后根充的牙胶副尖的比较研究

Applied research of root canals filling's auxiliary gutta-percha after 2 different methods in the preparation of root canals

目的比较两种根管预备方法对后继根充的牙胶副尖添加情况。方法牙髓炎、根尖周炎患者421个根管分为两组,A组201个根管用G型钻联合机用Protaper镍钛器械逐步深入法备根再做根充;B组220个根管用手用MaNi锉逐步后退法备根后再做根充。比较两组患者根充时牙胶副尖的添加情况。结果 A组201个根管的牙胶副尖共146根,而B组220个根管的牙胶副尖共685根,差异有统计学意义(P<0.05)。结论 G型钻联合Protaper镍钛器械根备后根管的根充比手用MaNi锉更方便、快捷。

Objective To compare the state of adding auxiliary gutta-percha in the root canals fillings after 2 different methods in the preparation of root canals. Methods 421 root canals in patients with pulptis or periapical periodontitis were divided into two groups . Group A：201 root canals were prepared with Gates-Glidden bur and Protaper nickel-titanium files.The preparing method is step-down technique. And then root canals filling. Group B：220 root canals were prepared with stainless steel MaNi files. The preparing method is step-back technique. And then also root canals filling.Then compare the adding situation of auxiliary gutta-percha in 2 groups. Results Group A：45 auxiliary gutta-percha were added in all 201 root canals. Group B：685 auxiliary gutta-percha in all 220 root canals. There＇s evident disparity between the 2 groups（P 0.05） . Conclusion The root canals filling after root canals preparation with Gate-Glidden bur and Protaper nickel-titanium files are more convinent than MaNi files