Orthodontic treatment, dental health, and oral health behavior in young Norwegian adults.

Information about previous orthodontic treatment and oral health is evaluated for 525 17 yr-olds and 175 21 yr-olds. Of these, 24.6% of the 17 yr-olds and 14.3% of the 21 yr-olds had received orthodontic treatment. Orthodontic treatment did not appear to have had any adverse effect on the level of periodontal disease, and caries prevalence in the orthodontically treated 17 yr-olds was less than in the untreated subjects.