title: [The stress distribution of mandibular alveolar mucosa under functional impressive complete denture studied by 3-D finite element analysis].
abstract: OBJECTIVE
  To analyze the stress distribution and displacement of the mandibular alveolar mucosa under functional impressive complete denture.
  
  
  METHODS
  CT images were processed by Mimics and Geomagic studio, and the solid models and 3-D finite element models were established by Unigraphics NX. 3-D finite element analysis (3-D FEA) was used to study the stress distribution and displacement on the mandibular alveolar mucosa under functional impressive complete denture and anatomic impressive complete denture.
  
  
  RESULTS
  The stress distribution on the mandibular alveolar mucosa under two types of complete denture were consistent, and arranged from large to small order as follow: alveolar process crest of molar area, alveolar process crest of anterior area, external oblique ridge and internal oblique ridge. At alveolar process crest and internal oblique ridge, the stress and Z-axis displacement of functional impressive complete denture were less than those of anatomic impressive complete denture.
  
  
  CONCLUSIONS
  During masticatory period, the stress distribution on the mandibular alveolar mucosa under functional impressive complete denture is more even and more comprehensive than that under anatomic one.
authors.affiliation: Department of Prosthodontics, Shanghai Stomatology Disease Centre, Shanghai, China. zhongqun681115@yahoo.com.cn
authors.forename: Qun
authors.initials: Q
authors.lastname: Zhong
authors.forename: Qing-yi
authors.initials: QY
authors.lastname: Shen
authors.forename: Xue-ying
authors.initials: XY
authors.lastname: Wu
authors.forename: Dong-mei
authors.initials: DM
authors.lastname: Wang
mesh_terms: D000539:Alveolar Process; D003824:Denture, Complete; D020342:Finite Element Analysis; D006801:Humans; D008334:Mandible; D008963:Molar; D009092:Mucous Membrane