title: [Stress analyses and comparison of the Kennedy III dentition defect restored with removable partial denture].
abstract: OBJECTIVE
  To investigate the stress distribution of the abutment and oral mucosa in Kennedy III, restored with removable partial dentures, either unilateral or bilateral designed.
  
  
  METHODS
  Five FEA models were established for the partial edentulous and RPDs, which were divided into group A and group B. According to the denture design, bilateral (B) or unilateral (A) designed. The 3-D finite element analyses were proceeded and calculated with the help of the software ANSYS. Paired t test was used for statistical analysis using SAS 6.2 software package.
  
  
  RESULTS
  The maximum stress appeared near the cervical mesial area of the first bicuspid and the second molar. There was no significant difference between the two groups in the stress distribution of the abutment and oral mucosa (P>0.05).
  
  
  CONCLUSIONS
  In regard to the stress of the abutments, unilateral designs have no excess stress formed when RPD was used to restore Kennedy III dentition defect.
authors.affiliation: Department of Prosthodontics, College of Stomatology, Ninth People's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200011, China. Weibin0328@hotmail.com
authors.forename: Bin
authors.initials: B
authors.lastname: Wei
authors.forename: Fu-qiang
authors.initials: FQ
authors.lastname: Zhang
authors.forename: Li-niu
authors.initials: LN
authors.lastname: Yu
authors.forename: Cheng-tao
authors.initials: CT
authors.lastname: Wang
mesh_terms: D001641:Bicuspid; D000044:Dental Abutments; D003799:Dental Stress Analysis; D003817:Dentition; D003779:Denture Design; D003832:Denture, Partial, Removable; D020342:Finite Element Analysis; D006801:Humans; D008963:Molar; D009061:Mouth Mucosa