title: Radiological variations in mandibular condyles of Finnish students, one group orthodontically treated and the other not.
abstract: Panoramatomograms of 968 students (355 males and 613 females) aged between 19 and 25 years were evaluated with special emphasis on the mandibular condyles. Two-hundred-and-thirty-five students (24.3 per cent) had been treated orthodontically. Radiographic variations in the condyles were significantly more common in the orthodontically treated group as a whole and in males (n = 71, P < 0.001), but not in females (n = 164). No age correlation in the frequency of condylar variations was found in either group. In terms of individual severe variation, flattening of the articular surface (P < 0.001) and subcortical sclerosis (P < 0.01) were more common in the orthodontically treated students. In the untreated subjects (284 males and 449 females), females had more variations (9.3 per cent) in their condyles than males (3.7 per cent P < 0.001). In the orthodontically treated students the percentages with condylar variations were 21.1 per cent in males and 16.5 per cent in females (N.S.).
authors.affiliation: Department of Dental Radiology, University of Helsinki, Finland.
authors.forename: J S
authors.initials: JS
authors.lastname: Peltola
mesh_terms: D000328:Adult; D005260:Female; D005387:Finland; D006801:Humans; D008297:Male; D008335:Mandibular Condyle / Q000000981:diagnostic imaging* / Q000473:pathology; D008336:Mandibular Diseases / Q000000981:diagnostic imaging / Q000473:pathology; D009971:Orthodontics, Corrective; D011862:Radiography, Panoramic; D012598:Sclerosis; D012737:Sex Factors