The Segmental Ridge-Split Procedure - …

J Periodontol May 2003 Innovations in Periodontics757 This report details surgical procedures for ridge expan-sion by means of splitting the crest of an edentulousridge. Atrophic bony ridges present a unique chal-lenge to the dental implant surgeon. In the past, onlaygrafts of bone harvested from the hip, maxillarytuberosity, symphysis of the chin, or external obliqueridge have all been used with success in reconstruc-tion of atrophic ridges. However, bone onlay graftingprocedures require a secondary surgical site, whichexhibits typical postoperative morbidity associatedwith bone harvesting performed with chisels andburs. Additionally, onlay grafts often require a heal-ing period of 6 months to a year before dental implantscan be placed, and the onlay graft sometimes fails tofuse to the augmented site.

Volume 74 • Number 5 Innovations in Periodontics materials are isolated within an area surrounded by bony walls and periosteum, preosteoblasts and func-

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