[Horseshoe-shaped osteotomy with bone interposition in order to raise the maxillary crest. An operating method stopped after the experiment].

An attempt was made to systematize a maxillary osteotomy to raise the maxilla using ten macerated skulls and two fresh cadavers with endentulous astrophied maxillas. The splayed vestibulum of the maxilla was depressed, and the flat palatine vault was arched. The complication rate in the experiment was so high that this operation must be rejected.