不同根管预备器械对弯曲根管预备效果的影响  

Effect of different root canal preparation instruments on curved root canal preparation

作　　者：谷达玮 郭锦材 GU Dawei;GUO Jincai(Department of Stomatology,Chenzhou No.1 People's Hospital,Chenzhou 423000,China;Department of Medical Technology,Changsha Stomatological Hospital,Changsha 410006,China)

机构地区：[1]郴州市第一人民医院口腔科,湖南郴州423000 [2]长沙市口腔医院医技综合科,湖南长沙410006

出　　处：《中国医学物理学杂志》2021年第8期1028-1032,共5页Chinese Journal of Medical Physics

基　　金：湖南省卫生健康委科研项目(B2019133);长沙市卫生计生委科研项目(201809)。

摘　　要：目的:研究不同根管预备器械对弯曲根管预备效果的影响。方法:96例牙髓炎或根尖牙周炎患者作为研究对象,共148颗患牙,按照抽签法,分为观察A组、观察B组和对照组,各32例。观察A组Protaper机,观察B组Mtwo机,对照组不锈钢K锉,比较根管预备时间、弯曲度、疼痛反应、根管锥度、流畅度及充填效果。结果:观察A组、观察B组预备时间显著少于对照组(P<0.05)。观察A组、B组比较无显著差异(P>0.05)。预备后3组根管弯曲度均显著降低(P<0.05)。3组组间比较无显著差异(P>0.05)。观察A组、B组疼痛反应显著优于对照组(P<0.05);观察A组、观察B组前磨牙、后磨牙的锥度和流畅度显著优于对照组(P<0.05)。观察A组(90.63%)、B组(88.89%)适充充填显著优于对照组(80.00%)(P<0.05)。结论:镍钛预备器械的弯曲根管预备快速,能够保持根管形态,提高充填效果。Objective To explore the effect of different root canal preparation instruments on the preparation of curved root canals.Methods Ninety-six patients with pulpitis or apical periodontitis were enrolled in this study,with a total of 148 affected teeth,and then the patients were randomly divided into observation group A,observation group B and control group,with 32 cases in each group.Protaper nickel titanium instrument was used for root canal preparation in observation group A,Mtwo nickel titanium instrument in observation group B,and stainless steel K file in control group.The root canal preparation time,curvature,pain response,root canal conical degree fluency and obturation quality were compared.Results The preparation time of observation groups A and B was significantly shorter than that of control group,and there was no statistical difference between observation groups A and B(P>0.05).After preparation,the curvatures of the root canals in all 3 groups were significantly lower those before preparation,and there was trivial difference among 3 groups(P>0.05).The pain responses of observation groups A and B were significantly better than that of control group(P<0.05);and moreover,observation groups A and B were significantly superior to control group in the conical degree and fluency of premolars and posterior molars(P<0.05).The obturation quality in observation groups A(90.63%)and B(88.89%)were significantly better than that in control group(80.00%)(P<0.05).Conclusion Using nickel-titanium root canal instruments for curved root canal preparation is fast and effective,and it can maintain the shape of the root canal and improve the quality of root canal obturation.

关 键 词：根管预备 Protaper机 Mtwo机 不锈钢K锉 弯曲根管 根管充填 

分 类 号：R783[医药卫生—口腔医学]