title: Orientation and eruptive patterns of the mandibular second premolar.
abstract: Distal migration of the mandibular second premolar into a first molar extraction site is a clinical finding often correlated with the early loss of a permanent mandibular first molar. Signs of this tendency can be detected radiographically as early as 6 to 7 years of age when the mineralization of the crown of the mandibular second premolar is almost complete. The results of a study of 2000 panoramic dental radiographs of children, aged 8 to 18 years, are reported.
authors.affiliation: Faculty of Dentistry, University of Athens, Greece.
authors.forename: N D
authors.initials: ND
authors.lastname: Spyropoulos
mesh_terms: D000293:Adolescent; D000367:Age Factors; D001641:Bicuspid / Q000503:physiopathology*; D002648:Child; D005260:Female; D006115:Greece; D006801:Humans; D008297:Male; D008334:Mandible; D008963:Molar / Q000601:surgery; D011862:Radiography, Panoramic; D014081:Tooth Extraction / Q000009:adverse effects*; D014085:Tooth Migration / Q000209:etiology* / Q000473:pathology; D014097:Tooth, Unerupted / Q000000981:diagnostic imaging*