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Updated: Jun 28, 2025
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A Postoperative Evaluation Guideline for Computer-Assisted Reconstruction of the Mandible
Published on: January 28, 2020
6.5K
To what extent can mastication functionality be restored following mandibular reconstruction surgery? A computer
Hamidreza Aftabi1, Benedikt Sagl2, John E Lloyd1
1Department of ECE, University of British Columbia, Vancouver, V6T 1Z4, BC, Canada.
Computer Methods and Programs in Biomedicine
|April 19, 2024
Summary
This study models mandible reconstruction to predict post-operative function. Dynamic biomechanical models show significant potential for restoring jaw function, even after large defects, aiding surgical decisions.
Area of Science:
- Biomechanical Engineering
- Oral and Maxillofacial Surgery
- Reconstructive Surgery
Background:
- Advanced head and neck cancers often necessitate mandible resection and reconstruction with bone grafts.
- Predicting long-term post-operative function is challenging due to complex surgical trade-offs and rehabilitation impacts.
Purpose of the Study:
- To develop an approach for estimating post-operative mandible function after reconstruction.
- To aid surgeons in making informed decisions regarding bone resection and reconstruction.
Main Methods:
- Development of dynamic biomechanical models for reconstructed mandibles with various defect types.
- Validation of models using existing literature data.
- Estimation of functional outcomes post-operative rehabilitation.
Main Results:
- Significant potential for restoring mandibular function, even with large defects.
- Achieved average trajectory error below 2 mm.
- Demonstrated comparable bite force to healthy individuals, improved condyle mobility, and limited muscle activation changes (max 20%).
Conclusions:
- The masticatory system exhibits substantial adaptability, enhancing post-operative rehabilitation.
- The developed models suggest improved restoration of jaw function is achievable.
