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首页> 外文期刊>Journal of Endodontics: Official Journal of American Association of Endodontists >Removal of broken files from root canals by using ultrasonic techniques combined with dental microscope: a retrospective analysis of treatment outcome.
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Removal of broken files from root canals by using ultrasonic techniques combined with dental microscope: a retrospective analysis of treatment outcome.

机译：通过使用超声技术结合牙科显微镜从根管中去除破碎的锉刀：治疗效果的回顾性分析。

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INTRODUCTION: The objective of this study was to assess the clinical outcome after removal of a broken file from root canal by using ultrasonic techniques and to evaluate various factors that might influence the outcome. METHODS: One hundred two patients with 102 teeth with a broken file in the root canal, treated between 2004 and 2008, were contacted for follow-up examination 12-68 months after treatment (median, 28 months). Outcome was assessed on the basis of clinical and radiographic criteria by calibrated examiners and dichotomized as healed or disease. The result was analyzed statistically by Pearson or Fisher exact test and multivariate logistic regression. RESULTS: Of 66 teeth examined (64.7% recall), 81.8% were healed. Stepwise logistic regression analysis revealed that inadequate root canal filling was a statistically significant factor in predicting failure of successful healing. The cases with removal of broken files had a higher healing rate than those with broken files left in the root canal, but the difference was not statistically significant (P > .05). There was no significant difference in outcome related to presence or absence of perforation, although the rate of healing was greater in teeth without perforation. Other factors including age, sex, tooth type, apical status, position of segment, and type of restoration did not affect prognosis. CONCLUSIONS: Treatment outcome after the use of ultrasonics for removal of broken files was favorable. Adequate root filling has a more substantial impact on treatment outcome than the other factors.
机译：引言：本研究的目的是通过超声技术评估从根管切除断头后的临床疗效，并评估可能影响疗效的各种因素。方法：对2004年至2008年间收治的102例102根牙齿在根管内有断齿的患者进行了随访，随访时间为治疗后12-68个月（中位数为28个月）。通过校准的检查员根据临床和放射学标准对结果进行评估，并根据治愈或疾病将其分为两部分。通过Pearson或Fisher精确检验和多元Logistic回归对结果进行统计分析。结果：在检查的66颗牙齿中（召回率为64.7％），治愈了81.8％。逐步逻辑回归分析表明，根管充盈不足是预测成功治愈失败的统计学显着因素。去除断屑的病例的治愈率高于留在根管中的断屑的病例，但差异无统计学意义（P> .05）。尽管没有穿孔的牙齿的愈合率更高，但与是否存在穿孔有关的结局没有显着差异。其他因素包括年龄，性别，牙齿类型，根尖状态，节段的位置以及修复的类型均不影响预后。结论：使用超声波去除破碎的文件后的治疗效果良好。与其他因素相比，充足的根部充填对治疗效果具有更大的影响。

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