[Contribution of orthodontics in treatment planning patients with reduced periodontium].

Orthodontics is the planned movement of teeth that can be carried thanks to the provoked resorption and apposition of osseous tissue. From the standpoint of the periodontium orthodontists should always be cognizant of the risk of iatrogenically weakening soft tissue status but at the same time they should consider that an improved character of the periodontium is one of the benefits that can be derived from mechano-therapy. These periodontal improvements, in the broadest sense of the term, can result from traditional overall therapy as well as treatment aimed solely at a local condition requiring extrusion of a tooth or, more rarely, alveolar distraction.