{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,12]],"date-time":"2026-01-12T22:32:13Z","timestamp":1768257133889,"version":"3.49.0"},"reference-count":15,"publisher":"FapUNIFESP (SciELO)","issue":"3","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Braz. Dent. J."],"published-print":{"date-parts":[[2012]]},"abstract":"<jats:p>A large number of disorders affecting the masticatory system can cause restriction of mouth opening. The most common conditions related to this problem are those involving the temporomandibular joint (TMJ) and the masticatory muscles, when facial pain also is an usual finding. Congenital or developmental mandibular disorders are also possible causes for mouth opening limitation, although in a very small prevalence. Coronoid process hyperplasia (CPH) is an example of these cases, characterized by an excessive coronoid process growing, where mandibular movements become limited by the impaction of this structure on the posterior portion of the zygomatic bone. This condition is rare, painless, usually bilateral and progressive, affecting mainly men. Diagnosis of CPH is made based on clinical signs of mouth opening limitation together with imaging exams, especially panoramic radiography and computerized tomography (CT). Treatment is exclusively surgical. This paper presents a case of a male patient with bilateral coronoid process hyperplasia, initially diagnosed with bilateral disk displacement without reduction, and successfully treated with intraoral coronoidectomy. It is emphasized the importance of differential diagnosis for a correct diagnosis and, consequently, effective management strategy.<\/jats:p>","DOI":"10.1590\/s0103-64402012000300012","type":"journal-article","created":{"date-parts":[[2012,7,18]],"date-time":"2012-07-18T10:10:37Z","timestamp":1342606237000},"page":"252-255","source":"Crossref","is-referenced-by-count":24,"title":["Coronoid process hyperplasia: an unusual cause of mandibular hypomobility"],"prefix":"10.1590","volume":"23","author":[{"given":"Yuri Martins","family":"Costa","sequence":"first","affiliation":[{"name":"University of S\u00e3o Paulo,  Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Andr\u00e9 Lu\u00eds","family":"Porporatti","sequence":"additional","affiliation":[{"name":"University of S\u00e3o Paulo,  Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Juliana","family":"Stuginski-Barbosa","sequence":"additional","affiliation":[{"name":"University of S\u00e3o Paulo,  Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Daniel Serra","family":"Cassano","sequence":"additional","affiliation":[{"name":"Private Practice in Oral and Maxillofacial Surgery,  Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Leonardo Rigoldi","family":"Bonjardim","sequence":"additional","affiliation":[{"name":"University of S\u00e3o Paulo,  Brazil; Federal University of Sergipe,  Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Paulo C\u00e9sar Rodrigues","family":"Conti","sequence":"additional","affiliation":[{"name":"University of S\u00e3o Paulo,  Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"530","reference":[{"key":"ref1","doi-asserted-by":"crossref","first-page":"250","DOI":"10.1016\/0278-2391(95)90219-8","article-title":"Hyperplasia of the mandibular coronoid process: an analysis of 31 cases and a review of the literature","volume":"53","author":"McLoughlin 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