title: Variation in prevalence of radiographic alveolar bone loss in subgroups of 14-year-old schoolchildren in Oslo.
abstract: The aim of the present study was to assess the prevalence of radiographic alveolar bone loss, as related to selected background variables in 2767 14-year old schoolchildren. Bone loss was recorded when the distance from the cemento-enamel junction to the alveolar crest exceeded 2 mm. The radiographs were magnified approximately 10 times. 3% of the subjects and 18.5% of the sites were excluded because of indistinct radiographic reference points. Radiographic bone loss was found in 4.5% of the subjects. Horizontal lesions were more prevalent than vertical defects. Most subjects with bone loss had 1 (75%) or 2 (22%) lesions. No subject was diagnosed with juvenile periodontitis kind of lesion. The prevalence of bone loss depended on the variables sex, orthodontic treatment and ethnic background.
authors.affiliation: Department of Periodontology, University of Oslo, Norway.
authors.forename: A M
authors.initials: AM
authors.lastname: Aass
authors.forename: J
authors.initials: J
authors.lastname: Albandar
authors.forename: R
authors.initials: R
authors.lastname: Aasenden
authors.forename: T
authors.initials: T
authors.lastname: Tollefsen
authors.forename: P
authors.initials: P
authors.lastname: Gjermo
mesh_terms: D000293:Adolescent; D000539:Alveolar Process / Q000000981:diagnostic imaging*; D001208:Asia / Q000208:ethnology; D001862:Bone Resorption / Q000000981:diagnostic imaging / Q000453:epidemiology* / Q000208:ethnology; D005006:Ethnicity; D005260:Female; D006801:Humans; D008297:Male; D009664:Norway / Q000208:ethnology; D009967:Orthodontic Appliances; D010510:Periodontal Diseases / Q000000981:diagnostic imaging / Q000453:epidemiology / Q000208:ethnology; D011859:Radiography; D013548:Sweden