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Electrognathographic patterns of mandibular motion after bilateral vertical ramus setback osteotomy
1The Royal Dental College, Aarhus C, Denmark.
The International Journal of Adult Orthodontics and Orthognathic Surgery
|January 1, 1992
Summary
Orthognathic surgery for mandibular prognathism generally improves, not hinders, jaw motion. Postoperative analysis showed enhanced mandibular function after bilateral vertical ramus osteotomy.
Area of Science:
- Oral and Maxillofacial Surgery
- Orthodontics
- Biomechanical Engineering
Background:
- Mandibular prognathism presents functional and aesthetic challenges.
- Surgical correction aims to improve jaw alignment and function.
- Understanding the impact of surgery on mandibular motion is crucial for patient outcomes.
Purpose of the Study:
- To evaluate mandibular motion following bilateral vertical ramus osteotomy.
- To assess the effects of orthognathic surgery on jaw kinesiography.
- To compare postoperative mandibular function with preoperative data and normative values.
Main Methods:
- Electrognathography and kinesiography were employed to record mandibular motion.
- 27 adult patients with mandibular prognathism undergoing surgery were studied.
- Data collected preoperatively and 6 months postoperatively.
Main Results:
- Orthognathic surgery did not negatively impact postoperative mandibular motion on average.
- Significant improvements were observed in most measured variables of jaw movement.
- Postoperative function compared favorably to normative data.
Conclusions:
- Bilateral vertical ramus osteotomy is effective in correcting mandibular prognathism without compromising jaw function.
- The surgical procedure can lead to enhanced mandibular motion post-recovery.
- This study supports the safety and efficacy of orthognathic surgery for improving jaw biomechanics.