目的 探讨基于三维数字化评估的WaveOne Gold单支锉系统在离体弯曲根管成形中的成形效果及安全性。 方法 选取2021年3月至2025年3月期间在南京中医药大学连云港附属医院就诊患者经锥形束CT（CBCT）确认为弯曲角度20° ～ 40°的84颗离体单根管恒牙，随机分为对照组（n = 42，采用ProTaper Universal系统）和观察组（n = 42，采用WaveOne Gold单支锉系统）。比较两组预备时间、根管偏移量、根管预备切割量、根管弯曲度、根尖碎屑推出量。 结果 观察组根管的预备时间低于对照组（P ＜ 0.05）。观察组的1、3、5 mm根管偏移量均低于对照组（P ＜ 0.05）。观察组根管体积与表面积增加量均显著低于对照组（P ＜ 0.05）。两组根管预备前的弯曲度比较差异无统计学意义（P ＞ 0.05），预备后两组的弯曲度低于预备前（P ＜ 0.05），且观察组的差值低于对照组（P ＜ 0.05）。观察组的根尖碎屑推出量低于对照组（P ＜ 0.05）。 结论 基于三维数字化评估，WaveOne Gold单支锉系统在离体弯曲根管成形中可显著缩短预备时间，减少根管偏移与根尖碎屑外推量，并保持较佳的弯曲度，具有较高的操作效率与安全性。

Objective To investigate the shaping performance and safety of the WaveOne Gold single-file system in the instrumentation of curved root canals using three-dimensional （3D） digital assessment. Methods From March 2021 to March 2025， 84 extracted single-rooted permanent teeth with canal curvature angles ranging from 20° to 40°， confirmed by cone-beam computed tomography （CBCT）， were selected. The specimens were randomly assigned to two groups： a control group （n = 42）， prepared with the ProTaper Universal system， and an experimental group （n = 42）， prepared with the WaveOne Gold single-file system. Preparation time， canal transportation （at 1， 3， and 5 mm from the apex）， changes in canal volume and surface area， alteration in canal curvature， and apically extruded debris were compared between the groups. Results The preparation time was significantly shorter in the experimental group compared to the control group （P < 0.05）. Canal transportation values at 1， 3， and 5 mm from the apex were significantly lower in the experimental group （P < 0.05）. Furthermore， the increases in canal volume and surface area were significantly less pronounced in the experimental group （P < 0.05）. While no significant difference in initial canal curvature was observed between the groups （P > 0.05）， both groups exhibited a reduction in curvature after instrumentation； however， this change was significantly smaller in the experimental group （P < 0.05）. Additionally， the amount of apically extruded debris was significantly lower in the experimental group than in the control group （P < 0.05）. Conclusion Based on 3D digital evaluation， the WaveOne Gold single-file system demonstrates superior efficiency and safety for instrumenting curved root canals. It significantly reduces preparation time， minimizes canal transportation and apical debris extrusion， and better preserves the original canal curvature compared to the ProTaper Universal system.