{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,21]],"date-time":"2026-04-21T18:36:14Z","timestamp":1776796574447,"version":"3.51.2"},"reference-count":21,"publisher":"SAGE Publications","issue":"2","license":[{"start":{"date-parts":[[1990,5,1]],"date-time":"1990-05-01T00:00:00Z","timestamp":641520000000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["British Journal of Orthodontics"],"published-print":{"date-parts":[[1990,5]]},"abstract":"<jats:p> This study was carried out to determine the prevalence of hypodontia and congenital malformation in permanent teeth of Saudi Arabian male children. Five-hundred schoolchildren were investigated, selected randomly from Riyadh city. The age group of the examined sample ranged from 13 years and 6 months to 14 years and 6 months. Clinical and radiographic examinations were performed. The findings indicated that hypodontia was present in about 4 per cent of the children; most frequently affected was the mandibular second premolars, maxillary laterals, and maxillary second premolars. Tooth malformations, mainly peg-shaped upper lateral incisors were also observed in about 4 per cent of the sample. <\/jats:p>","DOI":"10.1179\/bjo.17.2.115","type":"journal-article","created":{"date-parts":[[2014,12,16]],"date-time":"2014-12-16T13:22:12Z","timestamp":1418736132000},"page":"115-118","source":"Crossref","is-referenced-by-count":47,"title":["Prevalence of Hypodontia and Developmental Malformation of Permanent Teeth in Saudi Arabian Schoolchildren"],"prefix":"10.1177","volume":"17","author":[{"given":"Sulaiman","family":"Al-Emran","sequence":"first","affiliation":[{"name":"Orthodontic Department, Charles Clifford Dental Hospital, Wellesley Road, Sheffield S10 2SZ"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"179","published-online":{"date-parts":[[1990,5,1]]},"reference":[{"key":"bibr1-bjo.17.2.115","unstructured":"AbuAffanA. H. 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