title: [The application of desocclusol and manual mechanical method in endodontic retreatment].
abstract: OBJECTIVE
  To investigate the clinical method to remove a gutta-percha and root canal sealers.
  
  
  METHODS
  168 root canals which had been filled with gutta-percha were selected,all root canals needed endodontic retreatment.The root canal fillings were removed and the root canal was re-prepared with the method of desocclusol and manual mechanical method. Then the root canal was filled again with lateral condensation technique.
  
  
  RESULTS
  With manual mechanical method and desocclusol,all original root canal fillings were removed completely. The combined method could effectively prevent the formation of step,root canal-side wear,broken equipment or other complications during the course of retreatment.The success rate of retreatment was 89.3%.
  
  
  CONCLUSIONS
  Combined manual mechanical method with desocclusol could improve the success rate of recanalization of the root canal and saved time and effort. It is a method which could reduce the intensity and improve the efficiency of dentists, and worthy of wide clinical application.
authors.affiliation: Department of Preventive Dentistry, the Affiliated Stomatological Hospital of Nanchang University, Nanchang 330006, Jiangxi Province, China. aiminzhao167@163.com
authors.forename: Ai-min
authors.initials: AM
authors.lastname: Zhao
authors.forename: Hai-liang
authors.initials: HL
authors.lastname: Zhang
authors.forename: Xiao-yan
authors.initials: XY
authors.lastname: Ou
mesh_terms: D006171:Gutta-Percha; D006801:Humans; D019233:Retreatment; D012387:Root Canal Filling Materials; D012389:Root Canal Obturation; D018915:Root Canal Preparation; D012390:Root Canal Therapy
chemical_list: D012387:Root Canal Filling Materials; D006171:Gutta-Percha