title: [Computer simulation of projectile injuries to pig mandibular angle].
abstract: OBJECTIVE
  To investigate the feasibility of computer simulation in maxillofacial firearm injury.
  
  
  METHODS
  The three-dimensional finite element models and simulations of 7.62 mm, 5.56 mm standard bullets projectile injuries to pig mandibular angle were established by using MIMICS, ANSA, LS-DYNA and LS-POST software. Based on the simulation results, the bullet hole diameters, energy loss values, energy loss rates, von Mises stress, effective strain, effective strain rate dynamic contours at different time points were used for biomechanical analysis.
  
  
  RESULTS
  The damage processe of 7.62 mm, 5.56 mm standard bullets projectile injury to pig mandibular angle were simulated successfully. The injury rate of 7.62 mm standard bullet and injury severity of the mandible were higher than that of 5.56 mm standard bullet.
  
  
  CONCLUSIONS
  Computer simulation can simulate maxillofacial firearm injuries effectively and may become an important method for oral and maxillofacial firearm injuries analysis.
authors.affiliation: Department of Stomatology, Xinqiao Hospital, The Third Military Medical University, Chongqing, China.
authors.forename: Tao
authors.initials: T
authors.lastname: Lei
authors.forename: Yu-Bin
authors.initials: YB
authors.lastname: Chen
authors.forename: Liang-Xian
authors.initials: LX
authors.lastname: Xie
authors.forename: Gang
authors.initials: G
authors.lastname: Zhang
authors.forename: Ying-Hui
authors.initials: YH
authors.lastname: Tan
mesh_terms: D000818:Animals; D001696:Biomechanical Phenomena; D003198:Computer Simulation; D020342:Finite Element Analysis; D021621:Imaging, Three-Dimensional; D008338:Mandibular Injuries / Q000503:physiopathology*; D008954:Models, Biological; D012984:Software; D013314:Stress, Mechanical; D013552:Swine; D014948:Wounds, Gunshot / Q000503:physiopathology*