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Unilateral coronoid hyperplasia treated by coronoidectomy using a transzygomatic approach
Vilas Newaskar1, Faisal Idrees, Poornima Patel
1Department of Oral and Maxillofacial Surgery, Government College of Dentistry, Indore, Madhya Pradesh, India.
National Journal of Maxillofacial Surgery
|July 9, 2013
Summary
Coronoid hyperplasia, a rare cause of limited mouth opening, can lead to facial asymmetry. Surgical removal (coronoidectomy) effectively corrected asymmetry in a teenage patient.
Area of Science:
- Oral and Maxillofacial Surgery
- Surgical Pathology
Background:
- Coronoid hyperplasia is a rare condition characterized by enlargement of the coronoid process, leading to restricted mandibular movement and potential facial deformities.
- This mechanical issue can cause the enlarged coronoid to impact the zygomatic bone, resulting in facial asymmetry.
Observation:
- A 15-year-old male presented with a chief complaint of facial asymmetry.
- The patient exhibited symptoms consistent with coronoid hyperplasia impacting the zygomatic bone.
Findings:
- A transzygomatic surgical approach provided optimal access to the enlarged coronoid process.
- Coronoidectomy was successfully performed, leading to a significant reduction in the patient's facial asymmetry.
Implications:
- Coronoidectomy is an effective surgical intervention for correcting facial asymmetry caused by coronoid hyperplasia.
- The transzygomatic approach facilitates adequate surgical access for this procedure.
- The case demonstrates a favorable outcome with no reported recurrence, highlighting the procedure's efficacy.

