title: Delayed formation of a lower second premolar.
abstract: Delayed odontogenesis of a lower second premolar is presented in a case treated without extraction and focuses on the 7-year follow-up of the delayed tooth bud. The follow-up was initiated when the crown formation was diagnosed and was finished when the tooth erupted completely into the orthodontically provided space, which enabled the orthodontic leveling and alignment of the delayed premolar. The long follow-up indicates that delayed tooth buds may develop completely and normally.
authors.affiliation: Hospital for Rehabilitation of Craniofacial Anomalies, University of São Paulo in Bauru, Brazil. ortoface@travelnet.com.br
authors.forename: Omar Gabriel
authors.initials: OG
authors.lastname: da Silva Filho
authors.forename: Rita Cássia Moura Carvalho
authors.initials: RC
authors.lastname: de Lauris
authors.forename: Flávio Mauro
authors.initials: FM
authors.lastname: Ferrari Júnior
authors.forename: Terumi Okada
authors.initials: TO
authors.lastname: Ozawa
mesh_terms: D001641:Bicuspid / Q000254:growth & development*; D002648:Child; D003818:Dentition, Mixed; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008312:Malocclusion, Angle Class II / Q000628:therapy; D008334:Mandible; D009805:Odontogenesis / Q000502:physiology*; D013027:Space Maintenance, Orthodontic; D019228:Tooth Crown / Q000254:growth & development; D014078:Tooth Eruption / Q000502:physiology; D014083:Tooth Germ / Q000254:growth & development; D014087:Tooth Movement Techniques