title: [Design and application of the framework to prevent fracture of the magnetic denture].
abstract: OBJECTIVE
  To investigate the methods to prevent magnetic denture from fracture.
  
  
  METHODS
  17 cases were selected and divided into group A and group B. 9 cases in group A only used resin base, 8 cases in group B were strengthened with frameworks. The rates of fracture or fissure in denture base were observed for 5 years, Chi(2) test was used for statistical analysis.
  
  
  RESULTS
  In group A, 3 cases were found with damaged base, there was no fracture happened in group B. Chi(2) test showed that there was significant difference between the two groups (P<0.05).
  
  
  CONCLUSIONS
  Frameworks should be designed to improve the strength of the magnetic denture base. It is easy to manufacture and apply with satisfactory clinical effects.
authors.affiliation: Department of Prosthodontics, School of Stomatology, Ninth People's Hospital, Shanghai Jiaotong University, China.
authors.forename: Bin
authors.initials: B
authors.lastname: Wei
authors.forename: Wei-dong
authors.initials: WD
authors.lastname: Jiang
authors.forename: Fu-qiang
authors.initials: FQ
authors.lastname: Zhang
mesh_terms: D019232:Dental Restoration Failure; D003819:Denture Bases; D003779:Denture Design; D006801:Humans; D060328:Magnetic Phenomena; D008422:Materials Testing