Shaping ability of three instrumentation system in moderately curved canals: A micro-CT study

IF 2 3区工程技术 Q2 ANATOMY & MORPHOLOGY Microscopy Research and Technique Pub Date : 2024-05-30 DOI:10.1002/jemt.24613

Deniz Yanık, Şelale Özel

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Abstract

This study aims to compare the shaping ability of three systems using micro-computed tomography (micro-CT). Moderately-curved mesial canals of 36 mandibular molars were assigned to three groups (n = 24); Protaper Next (PTN, 0.25, 0.06), WaveOne Gold (WOG, 0.25, 0.07), TruNatomy (TRN, 0.25, 0.04), and instrumentation was performed. Pre- and post-micro-CT scans were obtained. Canal volume and surface, structure model index (SMI), centroid shift, canal transportation, and untouched canal were analyzed. One-way ANOVA and Student's t-test were used for statistics. There was no difference in SMI, centroid shift, and centering ability between the study groups (p > .05). Removed dentin and canal surface changes were lower in TRN, while untouched dentin walls were higher (p < .05). Cross-sections became more rounded (p < .05), but not significant between groups (p > .05). Considering the removed dentin by TRN, it can be used in critical dentin thickness, such as the danger zone (DZ). PTN, WOG, and WOG kept the original canal course similarly. Untouched dentin by TRN (41%) was wider than PTN and WOG, consequently, meticulous irrigation is recommended. TRN, which provides a controlled increase in canal volume, can be used in thin dentin such as the DZ, however, its use should be supported by copious irrigation and brushing considering the rate of untouched dentin walls.

Research Highlights

TRN presented a higher untouched dentin wall compared to PTN and WOG.
Canal volume and surface changes were the lowest in the TRN group.
The centering abilities were similar in PTN, WOG, and TRN.

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三种器械系统在中度弯曲牙槽骨中的塑形能力：显微 CT 研究

本研究旨在使用微型计算机断层扫描（micro-CT）比较三种系统的塑形能力。将 36 颗下颌磨牙的中度弯曲中轴管分配到三组（n = 24）：Protaper Next (PTN, 0.25, 0.06)、WaveOne Gold (WOG, 0.25, 0.07)、TruNatomy (TRN, 0.25, 0.04)，并进行了器械操作。获得前、后微型计算机断层扫描结果。分析了牙槽骨体积和表面、结构模型指数（SMI）、中心点偏移、牙槽骨运输和未修整牙槽骨。统计采用单因素方差分析和学生 t 检验。研究组之间在结构模型指数（SMI）、中心偏移和居中能力方面没有差异（P > .05）。在 TRN 中，去除的牙本质和牙管表面变化较低，而未触及的牙本质壁较高 (p .05)。考虑到 TRN 所去除的牙本质，它可用于临界牙本质厚度，如危险区（DZ）。PTN、WOG 和 WOG 保持了类似的原始管路。TRN 未触及的牙本质（41%）比 PTN 和 WOG 更宽，因此建议进行细致的灌洗。TRN 可控制牙管容量的增加，适用于牙本质较薄的情况，如 DZ，但考虑到未触及牙本质壁的比率，使用 TRN 时应辅以大量灌洗和刷牙。研究亮点：与 PTN 和 WOG 相比，TRN 的未触及牙本质壁更高。TRN组的牙槽体积和表面变化最小。PTN、WOG 和 TRN 的居中能力相似。

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来源期刊

Microscopy Research and Technique 医学-解剖学与形态学

CiteScore

5.30

自引率

20.00%

发文量

233

审稿时长

4.7 months

期刊介绍： Microscopy Research and Technique (MRT) publishes articles on all aspects of advanced microscopy original architecture and methodologies with applications in the biological, clinical, chemical, and materials sciences. Original basic and applied research as well as technical papers dealing with the various subsets of microscopy are encouraged. MRT is the right form for those developing new microscopy methods or using the microscope to answer key questions in basic and applied research.