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Template guided extra oral vertical ramus osteotomy for facial deformity correction - a technical note
Vengesna Balakrishna Krishna Kumar Raja1, Sasikala Balasubramanian1, Surya Kiran Mudigonda1
1Department of Oral & Maxillofacial Surgery, SRM Dental College and Hospital, Bharathi Salai, Ramapuram Campus Ramapuram, Chennai 600089, Tamil Nadu, India.
International Journal of Burns and Trauma
|January 27, 2021
Summary
Using a surgical template for extra-oral vertical ramus osteotomy effectively guides the procedure, preventing damage to the inferior alveolar nerve. This technique ensures accurate osteotomy and preserves neurosensory function.
Area of Science:
- Oral and Maxillofacial Surgery
- Surgical Technique Innovation
Background:
- Temporomandibular joint (TMJ) ankylosis can cause facial asymmetry and restricted mouth opening.
- Extra-oral vertical ramus osteotomy is a surgical procedure used to correct such deformities.
- Protecting the inferior alveolar nerve during this osteotomy is critical.
Observation:
- A case study involving a 21-year-old male with right TMJ ankylosis.
- An acrylic template was utilized as a guide during extra-oral vertical ramus osteotomy and coronoidectomy.
- Post-operative assessment included subjective evaluation and objective static two-point discrimination tests for inferior alveolar nerve function.
Findings:
- The use of a template ensured accurate intraoperative osteotomy.
- No subjective or objective signs of neurosensory impairment were observed in the inferior alveolar nerve during a six-month follow-up.
- The surgical template proved effective in guiding the osteotomy precisely.
Implications:
- Template-guided extra-oral vertical ramus osteotomy can minimize the risk of intraoperative inferior alveolar nerve damage.
- This technique offers a safer approach for correcting TMJ ankylosis and associated facial deformities.
- Further studies could explore the broader application of template-guided osteotomies in oral surgery.