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Updated: Jul 23, 2026
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A Postoperative Evaluation Guideline for Computer-Assisted Reconstruction of the Mandible
Published on: January 28, 2020
A biomechanical evaluation of mandibular angle fracture plating techniques
R H Haug1, T T Fattahi, M Goltz
1Division of Oral and Maxillofacial Surgery, University of Kentucky, College of Dentistry, Lexington, KY 40536-0084, USA.
Summary
This study evaluated biomechanical behaviors of various fixation techniques for mandibular angle fractures. While all methods met functional requirements for incisal edge loading, none adequately supported contralateral molar loading.
Area of Science:
- Oral and Maxillofacial Surgery
- Biomechanical Engineering
- Materials Science
Background:
- Mandibular angle fractures are common and require stable fixation for optimal healing.
- Numerous fixation techniques exist, but their comparative biomechanical performance is not fully understood.
Purpose of the Study:
- To evaluate and compare the biomechanical behavior of various fixation philosophies and techniques for mandibular angle fractures.
Main Methods:
- 150 synthetic mandible replicas were subjected to vertical loading at the incisal edge and contralateral molar region.
- Fourteen different fixation techniques, including lag screw, monocortical plating, and reconstruction plates, were tested.
- Load/displacement data were recorded to determine yield load, yield displacement, and stiffness.
Main Results:
- Statistically significant differences in stiffness and yield displacement were observed among certain monocortical fixation techniques under incisal edge loading.
- Significant differences in biomechanical performance were found within and among categories during contralateral molar loading.
Conclusions:
- All tested fixation systems met functional requirements for incisal edge loading.
- However, all systems failed to meet functional requirements for contralateral molar loading, indicating a need for improved fixation strategies.
