{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,2]],"date-time":"2026-07-02T05:26:14Z","timestamp":1782969974651,"version":"3.54.5"},"reference-count":19,"publisher":"BMJ","issue":"1","content-domain":{"domain":["bmj.com"],"crossmark-restriction":true},"short-container-title":["BMJ Case Rep"],"accepted":{"date-parts":[[2020,12,23]]},"published-print":{"date-parts":[[2021,1]]},"abstract":"<jats:p>Masseter hypertrophy (MH) is an uncommon disorder which can cause both aesthetic and functional problems. The most common aetiological factors associated with MH are habit of chewing gum, clenching and\/or bruxism. The treatment of MH includes conservative management as well as surgical resection of the enlarged muscle and\/or bone. Injection of botulinum toxin type A is a relatively new and minimally invasive method for management of masseter muscle hypertrophy, which offers many advantages over conventional surgical management. This paper reports a case of unilateral MH of unknown origin which was treated with injection of botulinum toxin type A, resulting in satisfactory reduction in the volume of muscle and improvement of facial aesthetics.<\/jats:p>","DOI":"10.1136\/bcr-2020-239056","type":"journal-article","created":{"date-parts":[[2021,1,18]],"date-time":"2021-01-18T12:31:49Z","timestamp":1610973109000},"page":"e239056","update-policy":"https:\/\/doi.org\/10.1136\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":8,"title":["Management of unilateral idiopathic masseter muscle hypertrophy with botulinum toxin type A"],"prefix":"10.1136","volume":"14","author":[{"given":"Kumar","family":"Nilesh","sequence":"first","affiliation":[{"name":"Oral & Maxillofacial Surgery, Krishna Institute of Medical Sciences Deemed University, Karad, Maharashtra, India"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ravina","family":"Dharamsi","sequence":"additional","affiliation":[{"name":"Oral & Maxillofacial Surgery, Krishna Institute of Medical Sciences Deemed University, Karad, Maharashtra, India"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Pankaj","family":"Patil","sequence":"additional","affiliation":[{"name":"Oral & Maxillofacial Surgery, Krishna Institute of Medical Sciences Deemed University, Karad, Maharashtra, India"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Payal","family":"Mate","sequence":"additional","affiliation":[{"name":"Oral & Maxillofacial Surgery, Krishna Institute of Medical Sciences Deemed University, Karad, Maharashtra, India"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"239","published-online":{"date-parts":[[2021,1,18]]},"reference":[{"key":"2025082803253594000_14.1.e239056.1","doi-asserted-by":"publisher","DOI":"10.1016\/0266-4356(94)90169-4"},{"key":"2025082803253594000_14.1.e239056.2","doi-asserted-by":"crossref","first-page":"790","DOI":"10.1590\/S0034-72992008000500024","article-title":"Benign masseter muscle hypertrophy","volume":"74","author":"Rispoli","year":"2008","journal-title":"Rev Bras Otorrinolaringol"},{"key":"2025082803253594000_14.1.e239056.3","doi-asserted-by":"crossref","first-page":"96","DOI":"10.4103\/0975-5950.85865","article-title":"Surgical management of masseteric hypertrophy and mandibular retrognathism","volume":"2","author":"Singh","year":"2011","journal-title":"Natl J Maxillofac Surg"},{"key":"2025082803253594000_14.1.e239056.4","first-page":"361","article-title":"Enlargement of the temporal and masseter muscle in both sides","volume":"63","author":"Legg","year":"1880","journal-title":"Jr Path Soc London"},{"key":"2025082803253594000_14.1.e239056.5","doi-asserted-by":"publisher","DOI":"10.1016\/0002-9610(47)90304-8"},{"key":"2025082803253594000_14.1.e239056.6","doi-asserted-by":"publisher","DOI":"10.1097\/00006534-198902000-00012"},{"key":"2025082803253594000_14.1.e239056.7","doi-asserted-by":"publisher","DOI":"10.1046\/j.1524-4725.2003.29117.x"},{"key":"2025082803253594000_14.1.e239056.8","first-page":"1","article-title":"Combination of medical and surgical treatments for masseter hypertrophy","volume":"2018","author":"Ayhan","year":"2018","journal-title":"Case Rep Dent"},{"key":"2025082803253594000_14.1.e239056.9","doi-asserted-by":"crossref","first-page":"227","DOI":"10.1159\/000349984","article-title":"RimabotulinumtoxinB versus OnabotulinumtoxinA in the treatment of masseter hypertrophy: a 24-week double-blind randomized split-face study","volume":"226","author":"Lee","year":"2013","journal-title":"Dermatology"},{"key":"2025082803253594000_14.1.e239056.10","first-page":"203","article-title":"Masseteric muscle hypertrophy","volume":"14","author":"Black","year":"1985","journal-title":"J Otolaryngol"},{"key":"2025082803253594000_14.1.e239056.11","doi-asserted-by":"publisher","DOI":"10.1016\/j.joms.2005.03.027"},{"key":"2025082803253594000_14.1.e239056.12","doi-asserted-by":"publisher","DOI":"10.1016\/S0301-0503(77)80072-6"},{"key":"2025082803253594000_14.1.e239056.13","doi-asserted-by":"crossref","first-page":"944","DOI":"10.1016\/j.joms.2010.06.205","article-title":"Masseteric hypertrophy: considerations regarding treatment planning decisions and introduction of a novel surgical technique","volume":"69","author":"Pary","year":"2011","journal-title":"J Oral Maxillofac Surg"},{"key":"2025082803253594000_14.1.e239056.14","doi-asserted-by":"crossref","first-page":"425","DOI":"10.1007\/978-3-662-04534-3_24","article-title":"Masseter muscle hypertrophy and bony surplus","volume":"23","author":"Obwegeser","year":"2001","journal-title":"Mandibular growth anomalies"},{"key":"2025082803253594000_14.1.e239056.15","first-page":"78","article-title":"Bilateral hypertrophy of the masseter muscle; an operation for correction; case report","volume":"2","author":"Adams","year":"1949","journal-title":"Br J Plast Surg"},{"key":"2025082803253594000_14.1.e239056.16","unstructured":"Converse JM . Reconstructive plastic surgery. 2. Philadelphia: Saunders, 1964."},{"key":"2025082803253594000_14.1.e239056.17","doi-asserted-by":"publisher","DOI":"10.1016\/0022-510X(71)90129-8"},{"key":"2025082803253594000_14.1.e239056.18","doi-asserted-by":"publisher","DOI":"10.1016\/S0161-6420(80)35127-0"},{"key":"2025082803253594000_14.1.e239056.19","doi-asserted-by":"publisher","DOI":"10.1054\/bjps.2000.3526"}],"container-title":["BMJ Case Reports"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/syndication.highwire.org\/content\/doi\/10.1136\/bcr-2020-239056","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,8,28]],"date-time":"2025-08-28T10:25:45Z","timestamp":1756376745000},"score":1,"resource":{"primary":{"URL":"https:\/\/casereports.bmj.com\/lookup\/doi\/10.1136\/bcr-2020-239056"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2021,1]]},"references-count":19,"journal-issue":{"issue":"1","published-online":{"date-parts":[[2021,1,18]]},"published-print":{"date-parts":[[2021,1]]}},"alternative-id":["10.1136\/bcr-2020-239056"],"URL":"https:\/\/doi.org\/10.1136\/bcr-2020-239056","relation":{},"ISSN":["1757-790X"],"issn-type":[{"value":"1757-790X","type":"electronic"}],"subject":[],"published":{"date-parts":[[2021,1]]}}}