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Bite forces in patients treated for mandibular angle fractures: implications for fixation recommendations
G S Tate1, E Ellis, G Throckmorton
1University of Texas Southwestern Medical Center, Dallas.
Summary
This study found that male patients with mandibular angle fractures treated with rigid internal fixation had significantly lower bite forces for weeks after surgery. Bite force was also reduced on the fractured side compared to the non-fractured side.
Area of Science:
- Oral and Maxillofacial Surgery
- Biomechanics
- Orthodontics
Background:
- Mandibular angle fractures are common facial injuries.
- Rigid internal fixation is a standard treatment.
- Understanding functional recovery, like bite force, is crucial for treatment optimization.
Purpose of the Study:
- To quantify voluntary bite forces in males after mandibular angle fracture treatment.
- To compare bite forces between operated and control groups.
- To assess bite force recovery over time and on different sides of the mandible.
Main Methods:
- Recording voluntary molar bite forces in 35 males with rigid internal fixation for mandibular angle fractures.
- Comparing these forces with those of 29 male controls.
- Measuring forces at various time points post-surgery.
Main Results:
- Significantly reduced molar bite forces were observed in patients for several weeks post-surgery compared to controls.
- Molar bite forces were significantly lower on the fractured side than on the non-fractured side.
- These deficits suggest a prolonged impact on masticatory function.
Conclusions:
- Rigid internal fixation for mandibular angle fractures leads to temporary deficits in bite force.
- The findings may inform reduced recommendations for fixation in certain cases.
- Further research could explore long-term functional recovery and optimal rehabilitation strategies.