PMID- 29487645 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20200930 IS - 1930-0433 (Print) IS - 1930-0433 (Electronic) IS - 1930-0433 (Linking) VI - 13 IP - 1 DP - 2018 Feb TI - Bilateral coronoid hyperplasia causing painless limitation of mandibular movement. PG - 112-117 LID - 10.1016/j.radcr.2017.11.001 [doi] AB - The coronoid process is a beaklike process in the ramus of the mandible. Coronoid process hyperplasia (CPH) is a rare possible cause of reduced mouth opening. An overgrown process interferes with mandibular rotation and lateral excursion and hence leads to restricted mouth opening (RMO). Although some factors are suggested, etiology of CPH is not completely known. Prescription of suitable radiography is necessary for an accurate diagnosis. This article reports a 30-year-old man with bilateral CPH and progressive RMO since childhood. This disorder affected his oral hygiene and quality of life. With the help of different types of radiography, CPH was diagnosed and coronoidectomy was the only treatment option. The patient showed normal jaw movements after the surgery and postoperative physiotherapy. General dentists have an important role in noticing RMO and referring the patients to maxillofacial radiologists. Although it is a rare phenomenon, general dentists need to keep CPH in mind as a possible cause. Panoramic imaging accompanied by computed tomography or cone beam computed tomography is the best imaging option in such cases. FAU - Ghazizadeh, Maryam AU - Ghazizadeh M AD - Department of Oral & Maxillofacial Radiology, School of Dentistry, Kermanshah University of Medical Sciences, Kermanshah, Iran. FAU - Sheikhi, Mahnaz AU - Sheikhi M AD - Dental Research Center, Department of Oral & Maxillofacial Radiology, School of Dentistry, Isfahan University of Medical Sciences, Isfahan, Iran. FAU - Salehi, Mohammad Mahdi AU - Salehi MM AD - Dental Students' Research Committee, School of Dentistry, Isfahan University of Medical Sciences, Hezar Jarib Street, 81746-73461 Isfahan, Iran. FAU - Khaleghi, Amin AU - Khaleghi A AD - Dental Students' Research Committee, School of Dentistry, Isfahan University of Medical Sciences, Hezar Jarib Street, 81746-73461 Isfahan, Iran. LA - eng PT - Case Reports DEP - 20171229 PL - Netherlands TA - Radiol Case Rep JT - Radiology case reports JID - 101467888 PMC - PMC5826470 OTO - NOTNLM OT - Computed tomography OT - Coronoid process hyperplasia OT - Restricted mouth opening OT - Temporomandibular joint EDAT- 2018/03/01 06:00 MHDA- 2018/03/01 06:01 PMCR- 2017/12/29 CRDT- 2018/03/01 06:00 PHST- 2017/07/01 00:00 [received] PHST- 2017/10/30 00:00 [revised] PHST- 2017/11/02 00:00 [accepted] PHST- 2018/03/01 06:00 [entrez] PHST- 2018/03/01 06:00 [pubmed] PHST- 2018/03/01 06:01 [medline] PHST- 2017/12/29 00:00 [pmc-release] AID - S1930-0433(17)30274-1 [pii] AID - 10.1016/j.radcr.2017.11.001 [doi] PST - epublish SO - Radiol Case Rep. 2017 Dec 29;13(1):112-117. doi: 10.1016/j.radcr.2017.11.001. eCollection 2018 Feb.