Clinical Outcome Evaluation Of 43 Cases Of Endodontic Microsurgery

Objective:This retrospective study aimed to evaluate the clinical efficacy of endodontic microsurgery and to explore early postoperative healing factors related to endodontic microsurgeryMethods:The clinical records of all patients who had undergone endodontic microsurgery from December 2017 to October 2019 at the Department Endodontic Dentistry,Stomatology Hospital affiliated to Zhejiang University School of Medicine were examined.Teeth with a recall period of at least six months were selected.Evaluate the surgical outcome by combining teeth symptoms and examinations.The volume of the periapical lesions was measured on the preoperative CBCT(Cone beam computed tomography)using ITK-SNAP software.Other parameters that were analyzed included gender,age,teeth positions,the quality of root canal filling,the type of periapical lesions,with or without sinus,root canal post,and cortical bone fenestration.Binary and multiple logistic regression models were used to identify factors affecting the early healing of endodontic microsurgeryResults:A total of 43 teeth from 36 patients were included in this study with a mean recall period of 9.0 months,and the effective rate was 90.7%.The surgically effective tooth radiographic healing outcome was 30.6%for complete healing and 69.4%for limited healing at six months.Both binary and multiple logistic regression analysis showed that the volume of preoperative periapical lesions was an important factor affecting early healing after endodontic microsurgery(P<0.05)Conclusion:Endodontic microsurgery is an effective method for the treatment of persistent periapical diseases.This study found that the volume of the preoperative periapical lesion has an essential effect on the early healing of endodontic microsurgery.For teeth with preoperative periapical lesions<50mm3,expected early healing could be obtained.