Mehmet Zahit BAŞ, Enes BEKMAN, Musa ERDEM

Evaluation of CFR-PEEK Miniplates with Finite Element Analysis in Mandibular Angle Fracture

Purpose The purpose of this study to compare the biomechanical stability of the fixation system made of CFR-PEEK and titanium alloy with the three-dimensional finite element analysis method (FEA) in the internal fixation of an unfavorable (inferior to superior, anteriorly oblique) mandibular angle fracture in which muscle tractions increase the amount of displacement. Materials and Methods A virtual unfavorable fracture line was formed on the mandible models. Fracture lines were virtually fixed with 4-hole, 1.0 mm profile thickness mini-plates with bar and 5 mm long titanium screws. Mini plates were designed from two different materials (titanium alloy and CFR-PEEK). These plates were placed in three different positions (Position A: single miniplate from the lower side, Position B: double miniplate, Position C: single miniplate from the upper side). To simulate the bite forces, 200 N force (anterior incisor and posterior molar) was applied separately in the vertical direction. Results All-titanium miniplate systems were able to withstand 200N molar and anterior loads, but the double miniplate system showed the lowest stress value. CFR-PEEK plates could not show strength in single miniplate systems under 200N molar and anterior forces, they showed strength only in double miniplate systems. CFR-PEEK double plate system reduces the stress on the bone by approximately 40% in anterior and molar loadings compared to titanium miniplates placed in the same positions. Conclusion As a conclusion, to the titanium plates used in current practice, CFR-PEEK materials can also be used in the field of maxillofacial traumatology in the future.

Keywords:

CFR-PEEK, titanium finite element analysis, miniplates, mandibular angle fractures,

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