title: [A three-dimensional finite element analysis of stress distribution in mandibular FPDs with different length pontics].
abstract: OBJECTIVE
  To investigate the stress distribution in the mandibular fixed partial denture (FPD) by changing the length of pontics.
  
  
  METHODS
  Based on a 3-DFE model of the mandibular FPD, we analyzed the stress distribution in the mandibular FPDs by loading the same level force at pontics with different lengths that were 2 to 4 times of normal length.
  
  
  RESULTS
  The distribution trends of the stresses in the mandibular FPDs with differently elongated pontics were similar, but the highest von Mises stress in the bridge was enlarged.
  
  
  CONCLUSIONS
  Damages may develop in the mandibular FDP, when the length of the pontic is longer than 3 times of normal length.
authors.affiliation: Department of Stomatology, General Hospital of PLA, Beijing 100853, China.
authors.forename: Li-jin
authors.initials: LJ
authors.lastname: Yan
authors.forename: Hong-chen
authors.initials: HC
authors.lastname: Liu
authors.forename: Lu
authors.initials: L
authors.lastname: Bai
authors.forename: Yan-rong
authors.initials: YR
authors.lastname: Wang
mesh_terms: D003799:Dental Stress Analysis; D003830:Denture, Partial, Fixed; D020342:Finite Element Analysis; D006801:Humans; D008334:Mandible