MTA三维根管充填治疗难治性根尖周炎

MTA three dimensional root canal filling in the treatment of refractory periapical periodontitis

目的观察MTA用于根管三维充填治疗难治性根尖周炎的临床效果。方法选择根管治疗失败的前牙53个,随机分为试验组(n=29),对照组(n=24);两组均行常规法去除原充填物,疏通根管,重新预备到位消毒后;试验组MTA用作根充剂一元相无牙胶尖三维直接加压分层充填根管,对照组行常规热牙胶充填;X线片确认致密后,根管口树脂光固化充填。观察3个月和半年后根尖周情况。结果在3个月和半年复查时,试验组的临床疗效优于对照组,且组间差异显著(P<0.05)。结论 MTA用于直接三维根管充填治疗难治性根尖周炎疗效可靠。

Objective To observe the clinical effect of MTA for three dimensional root canal filling in the treatment of refractory periapical periodontitis. Methods The failure of root canal treatment of anterior teeth in 53 cases,were randomly divided into trial group（n=29）,control group（n=24）;the two groups were all treated with conventional method to remove the original filling,root canal dredging,to prepare in place after disinfection,but the trial group MTA was used as root canal filling agent without gutta percha 3 D element for direct pressure root filling layered tube,meanwhile in the control group conventional warm gutta percha;after X-ray confirmed dense,taking light cure resin root canal filling. The periapical conditions were observed at 3 and 6 monthes afterwards.Results At the 3 and 6 monthes reexamination showed the clinical efficacy of the trial group was better than that of the control group,and there was a significant difference between the two groups（P〈0.05）. Conclusion MTA is reliable in the treatment of refractory periapical periodontitis with direct three-dimensional root canal filling.