HyFlex、S3、K3XF以及ProTaper在树脂模拟根管中成形能力的比较研究  

Comparative evaluation of shaping ability of HyFlex,S3,K3XF and ProTaper in simulated curved canals

作　　者：李宗莉 彭彬[1] 

机构地区：[1]口腔基础医学省部共建国家重点实验室培育基地和口腔生物医学教育部重点实验室,武汉大学口腔医学院,武汉430079

出　　处：《国际口腔医学杂志》2017年第3期256-260,共5页International Journal of Stomatology

基　　金：湖北省自然科学基金(2014CFA059)~~

摘　　要：目的通过树脂模拟根管比较HyFlex、S3、K3XF以及ProTaper的成形能力。方法 40个单弯树脂模拟根管随机分为4组,分别使用HyFlex、S3、K3XF以及ProTaper预备根管,数码相机采集预备前后根管的形态,采用图片处理软件Photoshop CS5将其重叠,通过分析软件Auto CAD 2010计算10个观测点的根管树脂去除量并计算中心定位能力,采用SPSS 17.0对数据进行单因素方差分析。结果 HyFlex无器械分离,其他3种器械各发生1例。在距根尖2、3 mm处HyFlex的中心定位能力最好(P<0.05),在4~6 mm处则是K3XF最好(P<0.05)。结论 4种器械预备后的树脂根管都保持着较好的根管形态,没有明显的偏移、台阶出现。HyFlex在根尖段的成形能力最好,K3XF则在根管中段更有优势。Objective To compare the shaping ability of HyFlex, S3, K3XF and ProTaper in simulated resin canals. Methods Forty curved artificial root canals in resin blocks were divided into four groups randomly, and prepared to an apical using HyFlex, S3, K3XF and ProTaper, respectively. Images ofpre- and post-instrumentation were superimposed by Photoshop CS5. Incidence of instrument fracture was recorded. The amount of resin removed by each system was measured at 10 measuring points by AutoCAD 2010. The data were analyzed by using one-way analysis of variance. Results One case of instrument fracture occurred in S3, K3XF and ProTaper respectively. The centering ability of HyFlex was the best at 2 mm to 3 mm from the apex（P〈0.05）. At 4 mm to 6 mm levels, K3XF showed a significantly higher centering ability（P〈0.05）. Conclusion The four systems could maintain the original canal morphology well without obvious canal transportation and ledging. In the apical of the root canal, the shaping ability of HyFlex was the best compared with others, whereas K3XF seemed to have more advantages in the middle.

关 键 词：镍钛器械 中心定位能力 模拟树脂根管 

分 类 号：R781.05[医药卫生—口腔医学]