Unilateral coronoid process hyperplasia causing restricted opening of the mandible and facial asymmetry-Report of a case

Document Type : Case report

Authors

Assistant professor, Dept. of Oral& Maxillofacial Surgery, Dental School, Mashhad University of Medical Sciences, Mashhad, Iran

Abstract

Introduction
Hyperplasia of the coronoid process of the mandible is a rare developmental anomaly and my be unilateral or bilateral.
 Unilateral enlargement of the coronoid process can result from a true tumor,such as an osteochondroma or osteoma.
The purpose of this case report is its abnormal sits as well as rarity.
Results and discussion
            An enlarged coronid  process impinging on the posterior surface of the zygoma restricting mandibular opening and facial asymmetry and fracture of zygomatic arch was detected.
Coronoidectomy was done for the patient under general anesthesia via an intraoral approach.
Conclusion
            One of the differential diagnosis of restricted mandibular opening is coronoid process hyperplasia. Treatment of coronoid hyperplasia consists of surgical removal of the
 enlarged coronoid process or processes to allow freedom of mandibular motion. Coronoidectomy is usually accomplished via an intraoral approach.
Conventional radiographic techniques do not fully reveal the size and mushroom-shaped coronoid process, so CTScanning and tomography is suggested.

Keywords

Journal of Mashhad Dental School
Volume 27, Issue 3,4
Autumn & Winter 2004
October 2003
Pages 185-188

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History

  • Receive Date: 21 September 2013
  • Accept Date: 21 September 2013

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