The role of the orthodontist in the multidisciplinary approach to periodontal therapy.

The effects of orthodontic tooth movement upon the supporting tissues of teeth with periodontal breakdown are conflictingly reported. Recent studies in beagle dogs have, however, enlarged our understanding of the effects of tipping and bodily movements of teeth and of factors important in retention after orthodontic treatment. Such treatment should always be preceded by the treatment of periodontal inflammation and the elimination of deep pockets.