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

Year 2023, Volume: 3 Issue: 1, 27 - 34, 29.04.2023

Mehmet Zahit Baş , Enes Bekman , Musa Erdem

Abstract

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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