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目的:分析比较不同方法预备根管对根管治疗后牙齿冠渗漏的影响。方法:随机选取84例牙齿疾病患者作为实验对象,就实施生理盐水及过氧化氢冲洗(A组,n=30颗)与实施EDTA凝胶及次氯酸钠冲洗(B组,n=30颗)和采用超声仪冲洗(C组,n=30颗)的冲洗效果及牙齿冠渗漏情况展开探讨。结果:从牙齿冠渗漏深度方面分析,A组显著高于B组及C组,组间差异显著,(P<0.05),但B组和C组差异不显著,(P>0.05),无统计学意义。从冲洗效果方面分析,A组根管内壁出现碎屑,牙本质小管关闭。B组根管内壁干净,牙本质小管关闭2/3,C组根管内壁干净,无玷污层,牙本质小管全部开放。结论:不同方法预备根管其产生的效果不同,建议临床采用不同预备根管方法减少牙齿冠渗漏,提高治疗效率。
OBJECTIVE: To analyze and compare the effect of different methods of preparing root canal on the tooth crown leakage after root canal treatment. Methods: Totally 84 patients with dental diseases were randomly selected. The patients were treated with saline and hydrogen peroxide (group A, n = 30), EDTA gel and sodium hypochlorite (group B, n = 30) Flushing effect of ultrasonic rinse (C group, n = 30) and crown leakage were explored. Results: In terms of the depth of tooth crown leakage, group A was significantly higher than group B and C (P <0.05), but there was no significant difference between group B and C (P> 0.05) Statistical significance. Analysis from the rinse effect, A group of root canal wall debris, dentinal tubules closed. In group B, the inner wall of the root canal was clean, the dentinal tubules were closed 2/3, the inner wall of group C was clean, without smear layer, and the dentinal tubules were all open. Conclusions: Different methods of root canal preparation have different effects. It is suggested that different methods of root canal preparation should be used to reduce the crown leakage and improve the treatment efficiency.