title: Retrospective evaluation of perforation repairs in 6 private practices.
abstract: BACKGROUND
  The purpose of this study was to investigate retrospectively the clinical outcome of 70 perforation repairs performed by 6 endodontic specialists.
  
  
  METHODS
  Endodontic specialists performed a total of 70 perforation repairs (69 patients) between 1998 and 2010 using a nonsurgical or combined nonsurgical/surgical approach. Treatments were performed with the aid of a dental operating microscope. Recalls of at least 6 months were obtained on 49 patients (50 teeth). Two calibrated observers evaluated the radiographic results on recalls up to 116 months, with a mean of 37 months. Pre-, intra-, and postoperative data were evaluated with respect to treatment outcomes and possible prognostic factors.
  
  
  RESULTS
  Successful results were obtained in 45 of 50 perforation repairs, a success rate of 90%. Significant prognostic factors included the location of the perforation, sex of the patient, and restorative status of the tooth before perforation repair. The overall success rate of this study was higher than reported in other studies.
  
  
  CONCLUSIONS
  Perforation repairs can be performed with a high level of success at least in the short- to medium-term.
authors.affiliation: Department of Operative Dentistry and Endodontics, Dental School, University of Marburg and University Medical Center Giessen and Marburg, Campus Marburg, Germany.
authors.forename: Valérie
authors.initials: V
authors.lastname: Pontius
authors.forename: Oliver
authors.initials: O
authors.lastname: Pontius
authors.forename: Andreas
authors.initials: A
authors.lastname: Braun
authors.forename: Roland
authors.initials: R
authors.lastname: Frankenberger
authors.forename: Matthias Johannes
authors.initials: MJ
authors.lastname: Roggendorf
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D017607:Aluminum Compounds / Q000627:therapeutic use; D017610:Calcium Compounds / Q000627:therapeutic use; D002126:Calcium Hydroxide / Q000627:therapeutic use; D055812:Community-Based Participatory Research; D003786:Dental Pulp Cavity / Q000000981:diagnostic imaging / Q000293:injuries* / Q000601:surgery; D003793:Dental Restoration, Permanent / Q000145:classification; D004338:Drug Combinations; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008866:Microsurgery / Q000295:instrumentation; D008875:Middle Aged; D010087:Oxides / Q000627:therapeutic use; D011859:Radiography; D012189:Retrospective Studies; D012387:Root Canal Filling Materials / Q000627:therapeutic use; D012388:Root Canal Irrigants / Q000627:therapeutic use; D018915:Root Canal Preparation / Q000379:methods; D012390:Root Canal Therapy / Q000009:adverse effects / Q000379:methods*; D012737:Sex Factors; D017640:Silicates / Q000627:therapeutic use; D014081:Tooth Extraction; D016896:Treatment Outcome; D055815:Young Adult
chemical_list: D017607:Aluminum Compounds; D017610:Calcium Compounds; D004338:Drug Combinations; D010087:Oxides; D012387:Root Canal Filling Materials; D012388:Root Canal Irrigants; D017640:Silicates; C086631:mineral trioxide aggregate; D002126:Calcium Hydroxide
keywords: Mineral trioxide aggregate; perforation repair; root perforation; treatment outcome