Assessment of the Biomechanical Performance of 5 Plating Techniques in Fixation of Mandibular Subcondylar Fracture Using Finite Element Analysis

Publication date: April 2016
Source:Journal of Oral and Maxillofacial Surgery, Volume 74, Issue 4
Author(s): Mhd Ayham Darwich, Mhd Hassan Albogha, Adnan Abdelmajeed, Khaldoun Darwich
PurposeThe aim of this study was to compare the performances of 5 plating techniques for fixation of unilateral mandibular subcondylar fracture.Materials and MethodsFive titanium plating techniques for fixation of condylar fracture were analyzed using the finite element method. The modeled techniques were 1) 1 straight plate, 2) 2 parallel straight plates, 3) 2 angulated straight plates, 4) 1 trapezoidal plate, and 5) 1 square plate. Three-dimensional models were generated using patient-specific geometry for the mandible obtained from a computerized tomographic image of a healthy living man. Plates were designed and combined with the mandible and analyzed under a 500-N load.ResultsThe single straight plate presented the most inferior performance; it presented maximum displacement and strain on cortical bone. The trapezoidal plate induced the least amount of strain on cortical bone and was best at resisting displacement.ConclusionThe trapezoidal plate is recommended for fixation of subcondylar fracture.



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