Effect of Different Contemporary Rotary Nickel Titanium Systems on Root Canal Geometry

Yasmin Sobh, Mohsen M. Nour El Deen, A. Hashem
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引用次数: 1

Abstract

Purpose: This study aimed to compare NiTi rotary systems of different wires namely; EdgeFiles, Profile GT series X (GTX) and ProTaper (PT) in terms of: canal transportation and centering ability. Materials and Methods: One hundred and twenty extracted human mandibular first molars were selected and randomly divided into two main groups (I&II) according to the ranges of curvature (60 teeth each), where group I: samples with 25o40o range of curvature and group II: samples with 45o60o range of curvature. Each group was subdivided into four subgroups according to the NiTi rotary system (15 teeth each): subgroup A: ProTaper, subgroup B: Profile GT Series X, subgroup C: EdgeFile X3 and subgroup D: EdgeFile X5. The root canals were scanned by i -CAT CBCT scanner before and after instrumentation at 3, 5 and 8 mm levels from the apex, to assess the canal transportation and centering ability. Results: The EdgeFile system produced the least canal transportation and remained more centered around the original canal than the other systems. While, PT system produced significantly the highest canal transportation and the least centered canal preparation than other systems. Conclusions: EdgeFile systems showed superior performance regarding maintenance of the original root canal curvature and centering ability than do other systems.
当代不同镍钛旋转系统对根管几何形状的影响
目的:比较不同金属丝的NiTi旋转系统;EdgeFiles, Profile GT系列X (GTX)和ProTaper (PT)在管道运输和定心能力方面。材料与方法:选取120颗拔除的人下颌第一磨牙,按曲率范围随机分为I组和II组(每组60颗),其中I组为曲率范围为250 ~ 400度的样本,II组为曲率范围为45 ~ 600度的样本。每组根据NiTi旋转系统再分为4个亚组(每个15颗牙):A亚组:ProTaper, B亚组:Profile GT Series X, C亚组:EdgeFile X3, D亚组:EdgeFile X5。使用i -CAT CBCT扫描器械前后根管距离根尖3、5和8 mm水平,评估根管运输和定心能力。结果:与其他系统相比,EdgeFile系统产生的根管移动最少,并且更集中在原根管周围。PT系统的根管移动量最大,中心根管预备量最小。结论:EdgeFile系统在维持根管曲率和对中能力方面优于其他系统。
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