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Volume 18 , Issue 4
July/August 2003

Pages 594598

Histologic Evaluation of Autogenous Calvarial Bone in Maxillary Onlay Bone Grafts: A Report of 2 Cases

Giovanna Orsini, DDS, MS/Andrea E. Bianchi, MD, MDM/Raffaele Vinci, MD, MDM/Adriano Piattelli, MD, DDS

PMID: 12939015

Bone augmentation for implant dentistry has become a necessary procedure for a number of edentulous patients. Calvarial bone grafting constitutes an important tool in achieving maxillary augmentation and sinus elevation. Much effort has been directed toward improving graft survival and volumetric maintenance. The purpose of the present study was to evaluate the histologic results of the calvarial onlay graft for maxillary reconstruction before implant placement. Two patients underwent maxillary augmentation using autogenous calvarial onlay grafts. After a 4-month healing period, biopsies of the augmented regions were performed and implants were placed. The implants were loaded after 5 months and then clinically examined after 15 months of function. Biopsies showed that calvarial onlay grafts were well incorporated into the pre-existing bone after a 4-month period. Histologic and histomorphometric findings demonstrated a living bone that showed features characteristic of mature and compact osseous tissue. The restored implants were stable and osseointegrated after a 15-month period of follow-up. The use of calvarial onlay grafts can be a predictable and successful method to achieve maxillary augmentation, allowing appropriate placement of implants and stable prosthetic restorations. (INT J ORAL MAXILLOFAC IMPLANTS 2003;18:594598)

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