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Coronoid hyperplasia: A review.
1Department of Oral and Maxillofacial Clinical Sciences, Faculty of Dentistry, University of Malaya, 50603 Kuala Lumpur, Malaysia.
Journal of Stomatology, Oral and Maxillofacial Surgery
|January 7, 2020
Summary
Coronoid hyperplasia, a rare cause of limited mouth opening, affects young males and often involves both sides of the mandible. Surgical treatments like coronoidectomy or coronoidotomy significantly improve mouth opening.
Area of Science:
- Oral and Maxillofacial Surgery
- Orthodontics
- Anatomy
Background:
- Coronoid hyperplasia is a rare condition causing progressive limitation of mouth opening.
- It results from the enlarged mandibular coronoid process impinging on the zygomatic bone.
- The exact etiopathogenesis remains inconclusive.
Purpose of the Study:
- To review and analyze existing case reports and series on coronoid hyperplasia.
- To evaluate patient demographics, clinical presentation, and treatment outcomes.
- To assess the effectiveness of surgical interventions for improving mouth opening.
Main Methods:
- Systematic review of 82 articles reporting 115 cases of coronoid hyperplasia.
- Data extraction included demographics, type of hyperplasia, treatment, and mouth opening measurements.
- Analysis of preoperative, intraoperative, and follow-up mouth opening dimensions.
Main Results:
- Coronoid hyperplasia commonly affects males, with a mean age of onset around 22.64 years.
- Bilateral involvement of the coronoid process was frequently observed.
- Surgical treatment significantly improved mouth opening from a mean of 16.5mm preoperatively to 36.3mm intraoperatively and 34.8mm at follow-up.
Conclusions:
- Coronoidectomy and coronoidotomy are effective treatments for improving mouth opening in patients with coronoid hyperplasia.
- Early diagnosis and intervention, particularly between ages 11-20, are crucial.
- Further research into the etiopathogenesis is warranted.
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