Abstract：Objective To explore the clinical characteristics of patients with different therapeutic outcomes after root canal treatment for periapical periodontitis,in order to provide a reference for clinical evaluation of therapeutic efficacy. Methods A retrospective analysis was conducted on 282 patients with periapical periodontitis admitted to our hospital from December 2019 to December 2022.All patients underwent root canal treatment and were followed up for 3 years.According to the therapeutic effect,they were divided into the poor therapeutic effect group(70 cases)and the good therapeutic effect group(212 cases).The clinical data of the two groups of patients were compared [age,gender,tooth position(anterior teeth,posterior teeth),number of root fillings(single root canal,double root canal,multiple root canals),quality of root fillings(complete,incomplete),whether there was fistula before surgery,whether there was gingival swelling before surgery,whether there was secondary caries,whether there was crown leakage,whether there was re-treatment,whether there was instrument fracture,and the range of low-density shadow(<5mm,>5mm)];The risk factors for poor therapeutic effect after root canal treatment in patients with apical periodontitis were analyzed through multivariate Logistic regression. Results The age,gender,number of root fillings,preoperative fistula,preoperative gingival swelling,and the range of low-density shadow were comparable between the two groups(P>0.05);The proportions of posterior tooth position,incomplete root filling quality,secondary caries,crown leakage,re-treatment and instrument fracture in the poor therapeutic effect group were all higher than those in the good therapeutic effect group(P<0.05).Multivariate Logistic regression analysis showed that posterior tooth position,incomplete root filling quality,secondary caries,crown leakage,re-treatment,and instrument fracture were independent risk factors for poor therapeutic effect after root canal treatment in patients with periapical periodontitis(P<0.05).A risk prediction model was established. Conclusion The therapeutic effect of root canal treatment in patients with periapical periodontitis is affected by the position of posterior teeth,incomplete root filling quality,secondary caries,crown leakage,re-treatment,and instrument breakage.Close clinical monitoring should be carried out.
程虹, 王广华, 郭凯杰. 根尖周炎根管治疗后不同疗效患者的临床特征比较[J]. 哈尔滨医药, 2026, 46(2): 25-28.
Cheng Hong, Wang Guanghua, Guo Kaijie. Comparison of Clinical Characteristics of Patients with Different Therapeutic Effects after Root Canal Treatment for Periapical Periodontitis. journal1, 2026, 46(2): 25-28.
2026, Vol. 46 
