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Influence of Plate Design, Thickness, and Fixation Architecture on Mandibular Advancement Stability: A Finite Element
Sergio Olate1,2, Víctor Ravelo3,4, Henry García Guevara5,6
1Department of Oral Diagnosis, Division of Oral and Maxillofacial Surgery, Faculty of Dentistry, State University of Campinas, Piracicaba 13414-018, SP, Brazil.
Journal of Clinical Medicine
|February 27, 2026
Summary
Optimizing plate design, thickness, and fixation architecture enhances mechanical stability in mandibular advancement surgery. Reinforced plates and integrated systems reduce deformation and improve stress distribution for better outcomes.
Area of Science:
- Biomechanical Engineering
- Oral and Maxillofacial Surgery
- Orthodontics
Background:
- Mandibular advancement surgery treats retrognathia and Class II deformities.
- Large advancements stress fixation systems; standard plates are common but need evaluation.
- Biomechanical assessment is crucial for optimizing stability in demanding cases.
Purpose of the Study:
- Evaluate how plate design, thickness, and fixation influence mechanical stability in mandibular advancement.
- Utilize finite element analysis for comprehensive biomechanical assessment.
- Identify optimal configurations for enhanced surgical outcomes.
Main Methods:
- Developed a 3D finite element model of mandibular advancement with a 10 mm gap.
- Analyzed 15 fixation configurations varying plate design, thickness (0.8mm, 1.0mm), and architecture (independent vs. integrated).
- Simulated functional loading and measured stress and deformation.
Main Results:
- Distinct mechanical behaviors observed across configurations.
- Reinforced designs, thicker plates, and integrated systems showed reduced deformation.
- Favorable stress distribution noted with optimized configurations compared to simple plates.
Conclusions:
- Plate design, thickness, and fixation architecture significantly impact mechanical stability.
- Biomechanical optimization of fixation systems is vital, especially for large advancements.
- Findings support informed selection of fixation strategies for improved surgical performance.
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