Abstract
Periodontal therapy for severe periodontitis seems to be different from that for slight or moderate periodontitis. It is indispensable for preserving teeth with severe alveolar resorption to finish adequate initial treatment and to carry out periodontal surgery for complete elimination of the inflammation surrounding the teeth as soon as possible. Orthodontic treatment is often required in case of diastema and extreme maxillary protrusion associated with severe periodontitis. In addition, the cases with narrow attached gingiva sometimes need free gingival graft or apically positioned flap surgery. This is the report for periodontal therapy of a severe periodontitis patient with orthodontic treatment and free gingival graft. At first examination, many teeth seemed to be difficult to preserve, however the most of all were preserved for about 9 years. Through this case, we recognized that periodontal therapy for severe periodontitis required various treatment different from periodontal therapy for slight or moderate periodontitis.
