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Updated: Jun 2, 2026
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A Postoperative Evaluation Guideline for Computer-Assisted Reconstruction of the Mandible
Published on: January 28, 2020
Biomechanical analysis of mandibular angle fractures
Julie Kimsal1, Bret Baack, Lionel Candelaria
1Mechanical Engineering Department, University of New Mexico, Albuquerque, NM, USA.
Summary
Minimal fixation for mandibular angle fractures, like a single tension band, may reduce complications. This biomechanical study supports less invasive approaches for better healing outcomes.
Area of Science:
- Biomechanics
- Oral and Maxillofacial Surgery
- Orthodontics
Background:
- Clinical evidence suggests minimal fixation reduces complications in mandibular angle fractures.
- Previous biomechanical models have not explored this finding.
Purpose of the Study:
- To biomechanically evaluate different fixation schemes for mandibular angle fractures.
- To compare single tension band, single bicortical plate, and dual plate fixation.
Main Methods:
- Finite element analysis was used.
- Three fixation scenarios were simulated: superior tension band, inferior bicortical plate, and combined fixation.
Main Results:
- The dual plate model showed the lowest stress and strain.
- The tension band model had high plate/screw stress but favorable callus strain.
- The bicortical plate model exhibited the highest callus strain.
Conclusions:
- Results support the single tension band as a less invasive fixation for mandibular angle fractures.
- This study provides the first biomechanical validation of clinical observations regarding mandibular angle fracture fixation.
