Surgical correction of the atrophic alveolar ridge. A preliminary report on a new concept of treatment.

Inferior repositioning of the atrophic maxillary edentulous alveolar ridge by LeFort I osteotomy and simulataneous bone grafting, and superior repositioning of the atrophic mandibular edentulous ridge by horizontal osteotomy of the mandibular body and simultaneous bone grafting have been accomplished successfully. These two new surgical procedures add a new dimension to treatment of severe atrophy of the alveolar ridges in edentulous or partially edentulous patients.