title: Ultrasonic root-end preparation: clinical and radiographic evaluation of results.
abstract: OBJECTIVE
  This study evaluated the results of periradicular surgery performed using ultrasonic root-end preparation.
  
  
  METHODS
  The course of healing during observation periods ranging from 6 months to 3 years was examined in 157 teeth.
  
  
  RESULTS
  One hundred forty-five teeth were successfully treated, for a success rate of 92.4%.
  
  
  CONCLUSIONS
  It was concluded that the ultrasonic root-end preparation technique for periradicular surgery is a simple procedure that provides excellent results.
authors.affiliation: Division of Dental and Oral Surgery, Komaki-City Hospital, Japan.
authors.forename: Y
authors.initials: Y
authors.lastname: Sumi
authors.forename: H
authors.initials: H
authors.lastname: Hattori
authors.forename: K
authors.initials: K
authors.lastname: Hayashi
authors.forename: M
authors.initials: M
authors.lastname: Ueda
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D001047:Apicoectomy; D017220:Dentin-Bonding Agents; D005260:Female; D005500:Follow-Up Studies; D006171:Gutta-Percha; D006801:Humans; D008297:Male; D008875:Middle Aged; D011670:Pulpectomy; D011859:Radiography; D012184:Retrograde Obturation; D012387:Root Canal Filling Materials; D018915:Root Canal Preparation / Q000379:methods*; D012391:Root Resorption / Q000601:surgery; D014092:Tooth Root / Q000000981:diagnostic imaging / Q000473:pathology / Q000601:surgery*; D016896:Treatment Outcome; D014464:Ultrasonic Therapy; D014945:Wound Healing
chemical_list: D017220:Dentin-Bonding Agents; D012387:Root Canal Filling Materials; C084074:Super EBA; D006171:Gutta-Percha