title: [The construction and analysis of three-dimensional finite element model of human unilateral maxillary defect].
abstract: OBJECTIVE
  To built a three-dimensional finite element model of the common unilateral maxillary defect, and to study the stress of the traditional maxillofacial prostheses for unilateral maxillary defect.
  
  
  METHODS
  The three-dimensional finite element model of unilateral maxillary defect and maxillofacial obturator prosthesis were constructed by means of spiral CT scanning, digital image transfer, self-developed software MedGraphics, UG engineering design program and ANASYS software. Then 3-D finite element stress analysis was carried out, for the prosthesis.
  
  
  RESULTS
  The three-finite element models of the unilateral maxillary defect and maxillofacial obturator prosthesis were established. In the traditional obturator prosthesis, the stress was on the posterior teeth of the healthy side; the area of stress concentration was on the palatal base near the position of the anterior teeth.
  
  
  CONCLUSIONS
  The three-dimensional finite element models of the unilateral maxillary defect and maxillofacial obturator prosthesis have good similarity in geometry and biology. The obturator prosthesis is in accorded with the biomechanical demands.
authors.affiliation: Department of Prosthodontics, College of Stomatology, Ninth People's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200011, China.
authors.forename: Ling-fei
authors.initials: LF
authors.lastname: Hong
authors.forename: Jian
authors.initials: J
authors.lastname: Sun
authors.forename: Ting
authors.initials: T
authors.lastname: Jiao
authors.forename: Bao-wei
authors.initials: BW
authors.lastname: Zhang
authors.forename: Ying
authors.initials: Y
authors.lastname: Tie
authors.forename: Dong-mei
authors.initials: DM
authors.lastname: Wang
mesh_terms: D003799:Dental Stress Analysis / Q000379:methods*; D020342:Finite Element Analysis; D006801:Humans; D021621:Imaging, Three-Dimensional / Q000379:methods*; D008437:Maxilla / Q000002:abnormalities*; D008447:Maxillofacial Prosthesis; D003765:Models, Dental; D036542:Tomography, Spiral Computed