Computer simulation of projectile injuries to pig mandibular angle / 中华口腔医学杂志

ABSTRACT

<p><b>OBJECTIVE</b>To investigate the feasibility of computer simulation in maxillofacial firearm injury.</p><p><b>METHODS</b>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.</p><p><b>RESULTS</b>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.</p><p><b>CONCLUSIONS</b>Computer simulation can simulate maxillofacial firearm injuries effectively and may become an important method for oral and maxillofacial firearm injuries analysis.</p>