title: Retarded eruption of maxillary second premolars associated with late development of the germs.
abstract: This study focused on five unusual cases with anomalous eruptions of the maxillary second premolars that related to late development of the germs. In four cases, the affected premolars erupted between the ages of 12y3m and 14y6m. In one case, which was suspected to include bilateral anomalies, the eruption of the premolar was excessively late, continuing up to 17y8m old. It was surmised that the degree of tooth formation in the contralateral side might help to predict approximately at what age the late premolars will erupt.
authors.affiliation: Department of Oral Health Science, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan.
authors.forename: Yo
authors.initials: Y
authors.lastname: Taguchi
authors.forename: Yoshihiko
authors.initials: Y
authors.lastname: Yano
authors.forename: Hiroaki
authors.initials: H
authors.lastname: Kobayashi
authors.forename: Tadashi
authors.initials: T
authors.lastname: Noda
mesh_terms: D000293:Adolescent; D001641:Bicuspid / Q000002:abnormalities / Q000254:growth & development / Q000503:physiopathology*; D002648:Child; D005260:Female; D005671:Fused Teeth / Q000150:complications; D006801:Humans; D008297:Male; D008437:Maxilla; D014074:Tooth Calcification / Q000502:physiology; D014078:Tooth Eruption / Q000502:physiology*; D014079:Tooth Eruption, Ectopic / Q000209:etiology; D014083:Tooth Germ / Q000254:growth & development*; D014094:Tooth, Deciduous / Q000473:pathology; D014096:Tooth, Supernumerary / Q000150:complications; D014097:Tooth, Unerupted / Q000209:etiology