Abstract
Long-term generalized chronic periodontitis often causes overbite with excessively elongated lower incisors. In such cases, healthy lower molars are usually chosen for orthodontic anchorage to intrude lower incisors. Reciprocal force loading produced by incisal intrusion on molars with loss of supporting alveolar bone is detrimental, however, even if periodontal treatment eliminates inflammation. We describe a case in which titanium screws were implanted in the cortical bone of the chin as intramaxillary anchorage, resulting in succesful intrusion of the elongated lower incisors, 5 mm at the edge, resulting in a proper occlusal relationship and esthetic improvement of the lower face. J Jpn Soc Periodontol, 44: 206-212, 2002.
