title: [Radiographic evaluation of the quality of root canal filling in a dental teaching hospital].
abstract: OBJECTIVE
  To evaluate the quality of root canal filling performed by dentists and advanced dental trainees (ADTs) and the current level of continuing education in a dental teaching hospital.
  
  
  METHODS
  2 043 cases, randomly completed by six dentists and eight ADTs over half a year, were divided into two groups. The quality of root canal filling was analyzed radiographically.
  
  
  RESULTS
  The overall percentage of the adequate root filling was 49.6%. The percentages of the adequate teeth filling and root canals filling (59.9%; 63.9%) by dentists were significantly higher than those (40.1%; 47.4%) by ADTs. In addition, the frequency of the adequate root canals filling by ADTs in the last two months (57.8%) was significantly higher than that in the first two months (40.0%), and the adequate filling rate by ADTs during the last two months was close to that by dentists.
  
  
  CONCLUSIONS
  The quality of root canal filling performed by dentists was adequate. There was a substantial improvement for ADTs in filling quality after six months training.
authors.affiliation: Department of Operative Dentistry and Endodontics, School of Stomatology, Wuhan University, Wuhan 430079, China.
authors.forename: Yue
authors.initials: Y
authors.lastname: Cheng
authors.forename: Ya
authors.initials: Y
authors.lastname: Shen
authors.forename: Bin
authors.initials: B
authors.lastname: Peng
mesh_terms: D003786:Dental Pulp Cavity / Q000000981:diagnostic imaging*; D004498:Education, Dental, Continuing; D006784:Hospitals, Teaching; D006801:Humans; D010518:Periodontitis / Q000628:therapy; D011671:Pulpitis / Q000628:therapy; D011787:Quality of Health Care; D011859:Radiography; D012389:Root Canal Obturation / Q000592:standards*