Visor/sandwich osteotomy. Progress report

Modification of the visor/sandwich osteotomy in treating the atrophic mandible is described as a one stage osteotomy-sulcoplasty procedure. Seven cases, with a vertical dimension of 10 mm or less in the premolar region, were assessed over a 12-month post-operative period. Vertical measurements were obtained clinically and cephalometrically, from the symphysis and premolar regions. The rates of resorption varied considerably in each area and were most marked in the first 3 months post-operatively.