{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,12,1]],"date-time":"2025-12-01T11:18:10Z","timestamp":1764587890637,"version":"3.40.4"},"reference-count":18,"publisher":"BMJ","content-domain":{"domain":["bmj.com"],"crossmark-restriction":true},"short-container-title":["BMJ Case Reports"],"accepted":{"date-parts":[[2017,8,2]]},"abstract":"<jats:p>Numerical anomalies, either addition or deletion, are quite a common findings in human dentition. However, it is extremely rare to find both hypodontia and hyperdontia simultaneously in the same individual. This condition is referred as concomitant hypohyperdontia (CHH). Aetiology of this condition is still obscure. The prevalence of CHH has been reported to be between 0.002% and 3.1%. This case report highlights a rare occurrence of bimaxillary CHH represented by the absence of both mandibular central incisors and presence of two supernumerary teeth in the maxillary anterior segment. The rarity of such condition of mixed hypodontia as well as hyperdontia in single human dentition prompted the author to report the case.<\/jats:p>","DOI":"10.1136\/bcr-2017-220683","type":"journal-article","created":{"date-parts":[[2017,8,10]],"date-time":"2017-08-10T08:40:18Z","timestamp":1502354418000},"page":"bcr-2017-220683","update-policy":"https:\/\/doi.org\/10.1136\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":3,"title":["Bimaxillary concomitant hypohyperdontia in a 10-year-old child"],"prefix":"10.1136","volume":"2017","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-8240-3142","authenticated-orcid":false,"given":"Pratik B","family":"Kariya","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Sweta","family":"Singh","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Narayan","family":"Kulkarni","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3230-9227","authenticated-orcid":false,"given":"Ankita","family":"Arora","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"239","published-online":{"date-parts":[[2017,8,10]]},"reference":[{"key":"2025042712274944000_2017.aug10_1.bcr-2017-220683.1","doi-asserted-by":"crossref","first-page":"101","DOI":"10.1179\/bjo.6.2.101","article-title":"Concomitant hypo-hyperodontia","volume":"6","author":"Gibson","year":"1979","journal-title":"Br J Orthod"},{"key":"2025042712274944000_2017.aug10_1.bcr-2017-220683.2","doi-asserted-by":"crossref","first-page":"167","DOI":"10.17796\/jcpd.25.2.k4617k5126205k46","article-title":"A rare non-syndrome case of concomitant multiple supernumerary teeth and partial anodontia","volume":"25","author":"Sharma","year":"2001","journal-title":"J Clin Pediatr Dent"},{"key":"2025042712274944000_2017.aug10_1.bcr-2017-220683.3","doi-asserted-by":"crossref","first-page":"295","DOI":"10.2334\/josnusd.56.295","article-title":"A comprehensive review of the literature and data analysis on hypo-hyperdontia","volume":"56","author":"Mallineni","year":"2014","journal-title":"J Oral Sci"},{"key":"2025042712274944000_2017.aug10_1.bcr-2017-220683.4","first-page":"338","article-title":"Concomitant hypodontia and hyperodontia. 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