{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,7,30]],"date-time":"2025-07-30T12:37:01Z","timestamp":1753879021294,"version":"3.41.2"},"reference-count":29,"publisher":"Wiley","issue":"3","license":[{"start":{"date-parts":[[2019,5,15]],"date-time":"2019-05-15T00:00:00Z","timestamp":1557878400000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["J of Invest &amp; Clin Dent"],"published-print":{"date-parts":[[2019,8]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Aim<\/jats:title><jats:p>To determine the prevalence of dental anomalies and its association with gender.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>This retrospective cross\u2010sectional study was conducted using radiographs, photographs and clinical records of patients who attended the Department of Orthodontics at the National Dental Centre Singapore. Records of 2508 ethnic Chinese orthodontic patients aged 14\u201025\u00a0years were examined for the prevalence of dental anomalies in the permanent dentition, excluding third molars. Statistical analyses were performed using <jats:styled-content style=\"fixed-case\">SAS<\/jats:styled-content> version 9.4 (SAS Institute Inc.). Logistic regression was used to determine the association between gender and the occurrence of various dental anomalies. Kappa coefficients were calculated to test for intra\u2010examiner reproducibility. Statistical significance was set at <jats:italic>P<\/jats:italic>\u00a0&lt;\u00a00.05.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Prevalence of dental anomalies was 5.7% hyperdontia, 11.1% hypodontia, 5.5% peg\u2010shaped upper lateral incisors, 21.9% impacted teeth, 1.3% transposition and 0.4% double teeth. There was no significant gender difference in the occurrence of the anomalies except hyperdontia, with males having significantly higher odds of hyperdontia compared with females (odds ratio, 1.488; 95% confidence interval, 1.062\u20102.085; <jats:italic>P<\/jats:italic>\u00a0=\u00a00.021).<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>Occurrence of hyperdontia is greater in males than females, while no significant gender differences were noted for hypodontia, peg\u2010shaped upper lateral incisors, impacted teeth, transposition and double teeth.<\/jats:p><\/jats:sec>","DOI":"10.1111\/jicd.12421","type":"journal-article","created":{"date-parts":[[2019,5,15]],"date-time":"2019-05-15T13:08:21Z","timestamp":1557925701000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":3,"title":["Secondary dentition characteristics in an ethnic Chinese orthodontic population: A retrospective cross\u2010sectional study"],"prefix":"10.1111","volume":"10","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-8776-7770","authenticated-orcid":false,"given":"Grace X. L.","family":"Chan","sequence":"first","affiliation":[{"name":"Department of Orthodontics National Dental Centre Singapore Singapore"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Elaine L. Y.","family":"Tan","sequence":"additional","affiliation":[{"name":"Department of Orthodontics National Dental Centre Singapore Singapore"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ming T.","family":"Chew","sequence":"additional","affiliation":[{"name":"Department of Orthodontics National Dental Centre Singapore Singapore"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Hung C.","family":"Wong","sequence":"additional","affiliation":[{"name":"Yong Loo Lin School of Medicine National University of Singapore Singapore"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Kelvin W. C.","family":"Foong","sequence":"additional","affiliation":[{"name":"Discipline of Orthodontics and Pediatric Dentistry Faculty of Dentistry National University of Singapore Singapore"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9710-3692","authenticated-orcid":false,"given":"Mimi","family":"Yow","sequence":"additional","affiliation":[{"name":"Department of Orthodontics National Dental Centre Singapore Singapore"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2019,5,15]]},"reference":[{"issue":"2","key":"e_1_2_7_2_1","first-page":"89","article-title":"Eruption of supernumerary permanent teeth in a sample of urban primary school population in Genoa, Italy","volume":"7","author":"Alberti G","year":"2006","journal-title":"Eur J Paediatr Dent"},{"key":"e_1_2_7_3_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1600-0528.1987.tb00524.x"},{"issue":"2","key":"e_1_2_7_4_1","first-page":"16","article-title":"Hypodontia and hyperdontia of permanent teeth in 12\u201014\u00a0year old Singaporean Chinese: a preliminary study","volume":"16","author":"Ho KK","year":"1991","journal-title":"Singapore Dent J"},{"issue":"3","key":"e_1_2_7_5_1","first-page":"140","article-title":"Prevalence of dental developmental anomalies: a radiographic study","volume":"24","author":"Ardakani FE","year":"2007","journal-title":"Community Dent Health"},{"key":"e_1_2_7_6_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.ajodo.2005.06.027"},{"key":"e_1_2_7_7_1","doi-asserted-by":"publisher","DOI":"10.3109\/00016357.2010.539979"},{"key":"e_1_2_7_8_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.ajodo.2007.03.030"},{"issue":"2","key":"e_1_2_7_9_1","first-page":"22","article-title":"Anomalies of permanent tooth number in three Asian ethnicities","volume":"33","author":"Qian L","year":"2017","journal-title":"Aust Orthod J"},{"key":"e_1_2_7_10_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1600-0528.2004.00158.x"},{"issue":"1","key":"e_1_2_7_11_1","first-page":"59","article-title":"Prevalence of tooth agenesis in adolescent Chinese populations with or without orthodontics","volume":"18","author":"Zhang J","year":"2015","journal-title":"Chin J Dent Res"},{"key":"e_1_2_7_12_1","doi-asserted-by":"publisher","DOI":"10.1186\/s12903-017-0352-y"},{"key":"e_1_2_7_13_1","doi-asserted-by":"publisher","DOI":"10.2334\/josnusd.52.455"},{"key":"e_1_2_7_14_1","doi-asserted-by":"publisher","DOI":"10.1177\/00220345630420062501"},{"issue":"6","key":"e_1_2_7_15_1","first-page":"395","article-title":"Prevalence of dental anomalies in orthodontic patients","volume":"43","author":"Thongudomporn U","year":"1998","journal-title":"Aust Dent J"},{"key":"e_1_2_7_16_1","doi-asserted-by":"publisher","DOI":"10.4317\/medoral.16.e56"},{"key":"e_1_2_7_17_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.joms.2009.04.137"},{"key":"e_1_2_7_18_1","doi-asserted-by":"publisher","DOI":"10.1007\/s007840100128"},{"key":"e_1_2_7_19_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jds.2011.03.003"},{"key":"e_1_2_7_20_1","doi-asserted-by":"publisher","DOI":"10.3109\/00016356809004587"},{"key":"e_1_2_7_21_1","doi-asserted-by":"publisher","DOI":"10.1093\/milmed\/147.12.1059"},{"issue":"2","key":"e_1_2_7_22_1","first-page":"194","article-title":"Gemination; report of two cases","volume":"50","author":"Boyne PJ","year":"1955","journal-title":"J Am Dent Assoc (1939)"},{"key":"e_1_2_7_23_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1601-0825.2007.01434.x"},{"key":"e_1_2_7_24_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0917-2394(11)70222-1"},{"key":"e_1_2_7_25_1","doi-asserted-by":"publisher","DOI":"10.1002\/ajpa.1330460204"},{"issue":"3","key":"e_1_2_7_26_1","first-page":"158","article-title":"Prevalence of impacted teeth and associated pathologies \u2013 a radiographic study of the Hong Kong Chinese population","volume":"9","author":"Chu FCS","year":"2003","journal-title":"Hong Kong Med J"},{"key":"e_1_2_7_27_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.2041-1626.2010.00041.x"},{"issue":"2","key":"e_1_2_7_28_1","first-page":"99","article-title":"Maxillary canine\u2010first premolar transposition, associated dental anomalies and genetic basis","volume":"63","author":"Peck L","year":"1993","journal-title":"Angle Orthod"},{"key":"e_1_2_7_29_1","doi-asserted-by":"publisher","DOI":"10.1016\/0030-4220(84)90220-2"},{"issue":"2","key":"e_1_2_7_30_1","first-page":"667","article-title":"Double tooth","volume":"26","author":"Knezevic A","year":"2002","journal-title":"Coll Antropol"}],"container-title":["Journal of Investigative and Clinical Dentistry"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/api.wiley.com\/onlinelibrary\/tdm\/v1\/articles\/10.1111%2Fjicd.12421","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1111\/jicd.12421","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/full-xml\/10.1111\/jicd.12421","content-type":"application\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1111\/jicd.12421","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2023,9,10]],"date-time":"2023-09-10T02:40:32Z","timestamp":1694313632000},"score":1,"resource":{"primary":{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/10.1111\/jicd.12421"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2019,5,15]]},"references-count":29,"journal-issue":{"issue":"3","published-print":{"date-parts":[[2019,8]]}},"alternative-id":["10.1111\/jicd.12421"],"URL":"https:\/\/doi.org\/10.1111\/jicd.12421","archive":["Portico"],"relation":{},"ISSN":["2041-1618","2041-1626"],"issn-type":[{"type":"print","value":"2041-1618"},{"type":"electronic","value":"2041-1626"}],"subject":[],"published":{"date-parts":[[2019,5,15]]},"assertion":[{"value":"2019-02-06","order":0,"name":"received","label":"Received","group":{"name":"publication_history","label":"Publication History"}},{"value":"2019-03-28","order":1,"name":"accepted","label":"Accepted","group":{"name":"publication_history","label":"Publication History"}},{"value":"2019-05-15","order":2,"name":"published","label":"Published","group":{"name":"publication_history","label":"Publication History"}}],"article-number":"e12421"}}