Journal of Tissue Engineering and Reconstructive Surgery ›› 2011, Vol. 7 ›› Issue (6): 330-332.doi: 10.3969/j.issn.1673-0364.2011.06.008

• Original article • Previous Articles     Next Articles

Biomechanical Study of Rigid Internal Fixation for Mandibular Angle Fracture Through 3-D FEM Simulation

DAI Yan1,ZHANG Chao1,2,ZHAO Huaqiang1   

  1. 1 Department of Oral and Maxillofacial Surgery,School of Stomatology of Shandong University,Jinan 250012,China;2 Department of Oral and Maxillofacial Surgery,Rizhao Hospital of TCM,Rizhao 276800,China
  • Published:2020-07-23

Abstract: Objective To observe the stress distribution of mandibular angle fracture under different rigid internal fixation(RIF) methods by developing a three-dimensional finite-element method(3-D FEM).Methods CT scan technology and related software were used to develop a 3-D FEM of mandibular angle fracture under different RIF.On this basis,the mandibular stress distributions were analyzed by MSC.Marc software.Results The von Mises stress mainly concentrated on the middle of the titanium plate in tension band fixation,while in two mini-plate fixation,it concentrated on the middle of the superior titanium plate.In the tension band fixation,the max-values of displacement was more than that in the two mini-plate fixation.When the biting force dropped to 102.7 N(LMOL) and 40.3 N(ICP),the furthest fracture mobility got into margin of safety under the tension band fixation.Conclusion The two mini-plate fixation was more stable than the tension band fixation.Choosing the suitable occlusion,tension band fixation could also provide sufficient stability for the mandibular angle fracture.

Key words: Mandibular angle fracture, Three-dimensional finite-element method, Tension band fixation, Two mini-plate fixation

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