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目的探讨System B联合ObturaⅡ根管充填系统中应用根管封闭剂对临床疗效的影响。方法 60颗上颌恒中切牙随机分成二组,每组各30颗牙。第一组用A H Plus联合System B、ObturaⅡ充填,第二组直接用System B和ObturaⅡ充填。术后即刻及术后1年行X线片对比研究。结果两组根管充填质量,术后1年复查没有显著性差异(P>0.05)。根管超填情况第一组多于第二组,二者有显著性差异(P<0.01)。术后1年复查治疗成功率无明显性差异。结论是否使用根管封闭剂对根管治疗的成功率无明显影响。
Objective To investigate the effect of root canal blocker on the clinical efficacy of System B combined with Obtura Ⅱ root canal filling system. Methods Sixty maxillary central incisors were randomly divided into two groups of 30 teeth each. The first group was filled with A H Plus System B and Obtura II, and the second group was filled directly with System B and Obtura II. Comparison of X - ray films immediately after operation and one year after operation. Results There was no significant difference in the quality of root canal filling between two groups (P> 0.05). There were significant differences between the first group and the second group (P <0.01). There was no significant difference in success rate after 1 year of follow-up. Conclusions The use of root canal blockers has no significant effect on the success rate of root canal therapy.