title: [Study of three-dimensional model on biomechanical characteristics of mandibular fractures in different site].
abstract: OBJECTIVE
  To determine the biomechanical characteristics of mandibular fractures in different site.
  
  
  METHODS
  Nine adult mandibular specimens were measured precisely. The data was used to establish a three-dimensional model. When mandibular was under functional loading, the bending and torsion moment as well as shear force of angle, body and symphyseal fracture was calculated. The data were analyzed by Origin 6.0 software.
  
  
  RESULTS
  Angle fracture had relatively high positive bending moment and high shear force. Body fracture had positive as well as negative bending moment and the highest torsion moments. Symphyseal fracture had only negative bending moment and relatively low shear force.
  
  
  CONCLUSIONS
  Angle, body and symphyseal fractures each have a biomechanics characteristic. These biomechanics characteristic should have an important meaning in the treatment of mandibular fractures and instructing patient how to bite correctly.
authors: Dept. of Oral and Maxillofacial Surgery, College of Stomatology, Jilin University, Changchun 130000, China.
authors: Chun-li
authors: CL
authors: Liu
authors: An-ping
authors: AP
authors: Wu
authors: Zheng-guo
authors: ZG
authors: Piao
authors: Hong
authors: H
authors: Wu
authors: Tie-nan
authors: TN
authors: Peng
authors: Lei
authors: L
authors: Liu
mesh_terms: D000328:Adult; D001696:Biomechanical Phenomena; D006801:Humans; D008334:Mandible; D008337:Mandibular Fractures