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目的:探讨ProTaper Universal和Hero Shaper两种根管再治疗器用于根管内充填材料清除临床效果差异。方法:选取近期于我院行正畸减数拔除单根管离体下颌前磨牙共100颗,采用随机数字表法分为A组(50颗)和B组(50颗);分别采用Hero Shaper和ProTaper Universal根管再治疗器行根管填充材料清除;比较两组患者根管再治疗过程中推出根尖孔碎屑量和根管壁残留充填物评分。结果:B组患者推出根尖孔碎屑量显著少于A组,差异有统计学意义(p<0.05);B组患者根尖部位根管壁残留填充物评分显著低于A组,差异有统计学意义(p<0.05);两组患者根中和根冠部位根管壁残留填充物评分比较差异无统计学意义(p>0.05)。结论:相较于Hero Shaper根管再治疗器械,ProTaper Universal根管再治疗器械用于根管内充填材料清除可有效降低经根尖孔推出碎屑量,改善根尖部清洁程度,具有临床应用价值。
OBJECTIVE: To investigate the clinical effects of two root canal remediators, ProTaper Universal and Hero Shaper, for root canal filling material clearance. Methods: A total of 100 mandibular premolars from a single canal were selected by orthodontics in our hospital recently. A random number table was divided into group A (50) and group B (50). Hero Shaper And ProTaper Universal root canal re-treatment device root canal filler material clearance; compared two groups of patients with root canal re-treatment of the introduction of root tip hole debris and root canal wall residual filling score. Results: The amount of detrital debris in group B was significantly less than that in group A (p <0.05). The score of residual filling in root apical wall of group B was significantly lower than that in group A (P <0.05). There was no significant difference in the scores of residual filling in the root canal and root canals between the two groups (p> 0.05). Conclusion: Compared with Hero Shaper root canal re-treatment equipment, ProTaper Universal root canal re-treatment equipment for root canal filling material removal can effectively reduce the amount of debris introduced through the apical foramen and improve the apical cleansing, with clinical application value.