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Effect of lateral cranial base surgery on temporomandibular joint function
M M Alsawaf1, W Missert, I P Janecka
1University Health Center, Pittsburgh, School of Dental Medicine, Penn.
The Journal of Prosthetic Dentistry
|February 1, 1993
Summary
Temporomandibular joint (TMJ) surgery for lateral cranial base tumors impacts jaw function. Resected condyles significantly increase mandibular deviation, affecting TMJ movement.
Area of Science:
- Neurosurgery
- Orthodontics
- Biomechanical Engineering
Background:
- Lateral cranial base tumor surgery can affect temporomandibular joint (TMJ) function.
- Assessing TMJ function post-surgery is crucial for patient outcomes.
Purpose of the Study:
- To evaluate temporomandibular joint (TMJ) function after lateral cranial base tumor surgery.
- To compare condylar movement and mandibular deviation in surgical patients versus controls.
Main Methods:
- Computerized axiography was used to record condylar movement in parasagittal planes during opening and protrusive movements.
- Six post-surgical patients (three with disarticulated/rearticulated condyles, three with resected condyles) were compared to 16 asymptomatic controls.
- Medical history, clinical examination, MRI, and CT scans were utilized for diagnosis and morphological assessment.
Main Results:
- Significant interaction effects were observed between right and left sides within groups (p < 0.001).
- Computerized axiography revealed dynamic TMJ function, while MRI and CT showed static morphology.
- Patients with surgically resected condyles exhibited increased mandibular deviation.
Conclusions:
- Lateral cranial base tumor surgery can alter TMJ dynamics.
- Condylar resection is associated with greater mandibular deviation, highlighting the need for careful surgical planning and rehabilitation.