Shaping ability of a new heat-treated NiTi system in continuous rotation or reciprocation in artificial curved canals
Shaping ability of a new heat-treated NiTi system in continuous rotation or reciprocation in artificial curved canals
复制标题
新型热处理镍钛系统在人工弯曲根管中连续旋转或往复运动的成形能力
DOI：
10.1007/s10266-021-00600-9
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发表时间：
2021
期刊：
影响因子：
2.5
通讯作者：
M. K. Kaloustian
中科院分区：
文献类型：
--
作者：
Jad Rebeiz;C. E. Hachem;N. Osta;M. Habib;Tamara Rebeiz;C. Zogheib;M. K. Kaloustian
目的是评价一种新型热处理NiTi系统（Endostar E3 Azure）在连续旋转或往复运动下的髓腔输送。将40个树脂块分为两组。第一个是连续旋转的，而第二个是往复运动的。拍摄了一张术前图像和两张术后图像，一张是在使用20/06后拍摄的，另一张是在使用25/06后拍摄的。这些图像被叠加以确定运河运输。记录根管成形所需的时间。采用单样本t检验、重复测量方差分析、单变量分析和Bonferroni多重比较检验进行统计分析。显著性水平设定为p < 0.05。在1 mm（p= 0.761，p = 0.559）、2 mm（p = 0.584，p = 0.810）和3 mm（p = 0.651，p = 0.070）处，20/06和25/06的连续和往复运动之间无显著差异。对于20/06和25/0.6，往复运动显示在5 mm（p= 0.049，p < 0.001）和7 mm（p<0.001，p < 0.001）处的根管运输显著较少。连续旋转比往复运动更耗时（p< 0.001）。Endostar E3 Azure在所有水平上的往复运动比连续旋转更好地尊重原始根管曲率，并且需要更少的时间来准备人工弯曲根管。根管医师应了解新型热处理镍钛锉的成形能力，包括根管移动及其与器械运动和根尖直径扩大的关系。
The purpose is to evaluate canal transportation of a new heat-treated NiTi system, the Endostar E3 Azure operated in continuous rotation or reciprocation. 40 resin blocks were divided into two groups. The first was shaped in continuous rotation while the second in reciprocation. A preoperative and two postoperative images were taken, one after the use of the 20/06 and one after the 25/06. The images were superimposed to determine canal transportation. Time required for canal shaping was recorded. One-sample and studentttests, repeated-measure analyses of variance, univariate analyses and Bonferroni multiple comparisons tests were used for statistical analysis. The significance level was set atp< 0.05. There was no significant difference between continuous and reciprocating motion with the 20/06 and 25/06, respectively, at 1 mm (p= 0.761,p= 0.559), 2 mm (p= 0.584,p= 0.810) and 3 mm (p= 0.651,p= 0.070). The reciprocating motion showed significantly less canal transportation at 5 mm (p= 0.049,p< 0.001) and 7 mm (p< 0.001,p< 0.001) for the 20/06 and 25/0.6. Continuous rotation was more time-consuming than reciprocation (p< 0.001). The Endostar E3 Azure in reciprocation respected the original canal curvature better than in continuous rotation at all levels, and required less time to prepare artificial curved canals. Endodontists should know the shaping abilities of novel heat-treated NiTi files, regarding canal transportation and its relation with the instruments’ motion and apical diameter enlargement.