Shi Lu, Yang Yunfei, Wan Jie, Xie Wen, Yang Ruiming, Yao Ying
The First Affiliated Hospital of Zhengzhou University, Zhengzhou, People's Republic of China.
J Dent Sci. 2022 Oct;17(4):1520-1527. doi: 10.1016/j.jds.2022.04.029. Epub 2022 May 12.
BACKGROUND/PURPOSE: Glide path management (GPM) is a consequential clinical step that serves to influence predictably successful root canal therapy. However, the effect of GPM on the shaping ability of single-file system remains controversial. This study compared the performance of rotary single-file One Curve (OC) and reciprocating single-file Reciproc Blue (RCB) in combination with/without different glide path techniques: no glide path preparation (NG), PathFile (PF), ProGlider (PG) and WaveOne Gold Glider (WOGG), respectively.
80 simulated curved canals (n = 10 canals/per group) were instrumented to an apical size of 0.25 mm using OC and RCB in combination with/without different glide path techniques, respectively. The amount of resin removal, canal transportation, and the degree of canal straightening were measured in Photoshop CS6 software. Statistical analysis of the data was performed by using Kruskal-Wallis test, followed by Dunn's post hoc test with Bonferroni correction ( = 0.05).
Post-glide path analysis found that WOGG and PG produced less canal transportation and curvature straightening than PF ( < 0.05). Post-shaping analysis showed that OC groups removed significantly less resin than RCB groups ( < 0.05). The PG and WOGG subgroups in both OC groups and RCB groups produced less transportation and curvature straightening than NG and PF subgroups ( < 0.05). OC + PG subgroup and OC + WOGG subgroup yielded the least canal transportation and curvature straightening ( < 0.05).
PG and WOGG can improve the shaping ability of OC and RCB instrument. OC, especially when combined with PG and WOGG, has a less aggressive dentin cutting and more centered preparation than the RCB instrument.
背景/目的：滑行路径管理（GPM）是一个重要的临床步骤，有助于实现可预测的成功根管治疗。然而，GPM对单根管系统成形能力的影响仍存在争议。本研究比较了旋转单根管One Curve（OC）和往复式单根管Reciproc Blue（RCB）分别与不同滑行路径技术（无滑行路径预备（NG）、PathFile（PF）、ProGlider（PG）和WaveOne Gold Glider（WOGG））联合使用时的性能。
使用OC和RCB分别与不同滑行路径技术联合，将80个模拟弯曲根管（每组n = 10个根管）预备至根尖尺寸0.25 mm。在Photoshop CS6软件中测量树脂去除量、根管偏移和根管拉直程度。采用Kruskal-Wallis检验对数据进行统计分析，随后进行Dunn事后检验并采用Bonferroni校正（α = 0.05）。
滑行路径后分析发现，WOGG和PG产生的根管偏移和弯曲度拉直比PF少（P < 0.05）。成形后分析表明，OC组去除的树脂明显少于RCB组（P < 0.05）。OC组和RCB组中的PG和WOGG亚组产生的偏移和弯曲度拉直比NG和PF亚组少（P < 0.05）。OC + PG亚组和OC + WOGG亚组产生的根管偏移和弯曲度拉直最少（P < 0.05）。
PG和WOGG可提高OC和RCB器械的成形能力。OC，尤其是与PG和WOGG联合使用时，与RCB器械相比，具有更温和的牙本质切削和更居中的预备。
