镍钛、M 型丝和金丝在根管成形术中的应用：上颌第一磨牙中 ProTaper Next 、WaveOne Gold 器械与一种形状的镍钛、M 型丝和金丝的微 CT 比较研究。
Root Canal Shaping Using Nickel Titanium, M-Wire, and Gold Wire: A Micro-computed Tomographic Comparative Study of One Shape, ProTaper Next, and WaveOne Gold Instruments in Maxillary First Molars.
机构信息
Department of Odontology, School of Dentistry, Faculty of Health Sciences, University of Pretoria, Pretoria, South Africa.
Department of Odontology, School of Dentistry, Faculty of Health Sciences, University of Pretoria, Pretoria, South Africa.
出版信息
J Endod. 2019 Jan;45(1):62-67. doi: 10.1016/j.joen.2018.09.013. Epub 2018 Nov 13.
INTRODUCTION
The aim of this study was to evaluate the root canal shaping effect of instruments manufactured from nickel titanium, M-Wire, and Gold wire with different glide path preparation techniques.
METHODS
One hundred thirty-five mesiobuccal canals of extracted human maxillary molars were randomly divided into 3 equal groups (N = 45) for glide path preparation with K-files (KF) (Dentsply Sirona, Ballaigues, Switzerland), One G (OG) files (Micro-Mega, Besançon, France), and ProGlider (PG) files (Dentsply Sirona). Specimens of each glide path group were further divided equally into 3 groups for instrumentation with ProTaper Next (PTN, Dentsply Sirona), One Shape (OS, Micro-Mega), and WaveOne Gold (WOG, Dentsply Sirona) systems (n = 15). Micro-computed tomographic imaging was used to scan teeth before instrumentation and after shaping to compare centering ratio and canal transportation values at the apical, midroot, and coronal levels and the overall changes in canal volume. Data sets were statistically analyzed (analysis of variance and Kruskal-Wallis H tests).
RESULTS
The centering ratios for all groups were statistically similar at all levels. Apical canal transportation was significantly high for K/OS and K/PTN (P = .003). Midroot canal transportation was significantly high for K/PTN, K/OS, and OG/OS (P = .0003). Coronal canal transportation was significantly high for K/PTN and K/OS (P = .011). The highest change in canal volume was observed with all PTN groups and the lowest with PG/WOG (P = .06).
CONCLUSIONS
WOG manufactured from Gold wire combined with PG showed better root canal shaping ability and removed less dentin from the canal walls. The nickel-titanium (OS) and M-Wire (PTN) instruments used in combination with KF significantly transported more canals. PTN removed the most dentin from the canal walls regardless of the GPP technique.
介绍
本研究旨在评估镍钛合金、M-Wire 和 Gold wire 制造的器械在使用不同预备冠向直线入口技术时的根管成形效果。
方法
将 135 颗上颌磨牙的颊舌向根管随机均分为 3 组（每组 45 颗），分别使用 K 锉（Dentsply Sirona，Ballaigues，瑞士）、One G（OG）锉（Micro-Mega，Besançon，法国）和 ProGlider（PG）锉（Dentsply Sirona）预备冠向直线入口。每个预备冠向直线入口组的样本进一步均分为 3 组，分别使用 ProTaper Next（PTN，Dentsply Sirona）、One Shape（OS，Micro-Mega）和 WaveOne Gold（WOG，Dentsply Sirona）系统进行器械预备（每组 15 颗）。在器械预备前和成形后，使用微计算机断层扫描成像技术对牙齿进行扫描，以比较根尖、中根和冠方水平的根管中心率和根管偏移值以及根管总体容积的变化。对数据集进行了统计学分析（方差分析和 Kruskal-Wallis H 检验）。
结果
所有组的根管中心率在各个水平均无统计学差异。K/OS 和 K/PTN 的根尖部根管偏移显著较高（P=0.003）。K/PTN、K/OS 和 OG/OS 的中根部根管偏移显著较高（P=0.0003）。K/PTN 和 K/OS 的冠部根管偏移显著较高（P=0.011）。所有 PTN 组的根管容积变化最大，PG/WOG 组的变化最小（P=0.06）。
结论
Gold wire 制造的 WOG 与 PG 联合使用具有更好的根管成形能力，对根管壁的牙本质去除较少。镍钛合金（OS）和 M-Wire（PTN）与 KF 联合使用的器械显著增加了根管偏移。无论使用何种冠向直线入口预备技术，PTN 均从根管壁去除了最多的牙本质。
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