3种机用镍钛根管锉中心定位能力的比较

发布时间：2018-03-19 08:39

本文选题：根管制备　切入点：镍钛根管锉　出处：《华中科技大学学报(医学版)》2017年05期 　论文类型：期刊论文

【摘要】：目的比较3种机用镍钛根管锉预备树脂模拟弯曲根管的中心定位能力差异,为临床应用提供实验室依据。方法把30个树脂模拟弯曲根管(弯曲度30°)按照随机数字表分为3组,分别用Reciproc(R组)、Protaper(P组)和WaveOne(W组)机用镍钛根管锉进行根管预备,定位拍摄预备前后模拟弯曲根管的数码照片。应用Photoshop软件进行预备前后图像的提取和重叠。应用Digimizer软件在1妣1标尺条件下测量距离根尖孔每1mm根管中心点在预备前后的偏移量,每根管测量10个位点。用单因素方差分析和Student-Newman-Kuels检验进行统计学检验(α=0.05)。结果在距离根尖1、2和3mm水平上,3组根管中心点向弯曲外侧偏移;在6、7和8mm水平上,3组根管中心点向弯曲内侧偏移,且R组和W组的中心定位能力优于P组,差异有统计学意义(均P0.05),R组和W组的中心定位能力差异无统计学意义(均P0.05)。在距离根尖4、5、9和10mm水平上,各组之间的根管中心定位能力差异无统计学意义(均P0.05)。结论 Reciproc和WaveOne的中心定位能力相近,且比Protaper在根尖区和根管弯曲最大部位具有更好的中心定位能力。
[Abstract]:Objective to compare the central localization ability of three kinds of Nickel-titanium root canal files prepared by resin simulated curved root canal, and to provide laboratory basis for clinical application. Methods 30 resin simulated curved root canals (30 掳curvature) were divided into 3 groups according to random digital table. Reciproc(R group (P group) and WaveOne(W group (group WaveOne(W) were used to prepare the root canal with nickel-titanium root canal file, respectively. Position and take digital photos of analogue curved root canal before and after preparation. Photoshop software was used to extract and overlap the image before and after preparation. Digimizer software was used to measure the distance between root canal center point and root canal center point per 1mm root canal at 1 ruler. Deviation before and after preparation, Ten loci per root canal were measured. The results were analyzed by single factor ANOVA and Student-Newman-Kuels test (伪 0.05). The results showed that the central point of root canal in the 3 groups shifted to the lateral curvature at the level of 1 / 2 and 3 mm from the root tip. At 6mm and 8mm levels, the central point of root canal in the 3 groups shifted to the medial curvature, and the ability of locating the center of group R and group W was superior to that of group P. There was no significant difference in the ability of central localization between group P 0.05 and group W (all P 0.05). At the level of 4mm and 10mm from the root tip, there was no significant difference between the two groups. There was no significant difference in the ability to locate the root canal center between the three groups (all P 0.05). Conclusion the central localization ability of Reciproc and WaveOne is similar and better than that of Protaper in the apical region and the largest part of root canal curvature.
【作者单位】：深圳市人民医院口腔医学中心暨南大学第二临床医学院;
【基金】：深圳市科技计划资助项目(No.JCYJ20140416122812030)
【分类号】：R781.05

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