Thesis (M.Sc.) - Cairo University - Faculty of oral and dental Medicine - Department of Oral and Maxillofacial Surgery

Guided bone regeneration (GBR) is a reconstructive procedure of alveolar ridge using membranes. This procedure is indicated when there is no sufficient bone for implantation, or in the case of optimal implant installation for esthetic or functional needs. GBR can be performed before implant placement, when there is not enough bone for initial stability of implants and less predictable outcomes (staged approach), or performed simultaneously with implantation (combined approach). GBR techniques have been used for vertical and horizontal ridge augmentations with acceptable results. In this study, 12 patients were included (12 males patients) who had missing maxillary and mandibular anterior and premolar teeth. Patients were divided into two groups A&B. The implants were delayed loaded after insertion and patients were subjected for observation period of six month during which a series of radiographic pictures, probing depth and bleeding index were taken. The crestal bone height was measured at mesial and distal side of the implants. The results had shown that GBR technique of implant had shown to be reliable methods if proper selection of the patient and proper surgical procedure had been done

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