For a century, autologous bone grafts have been used in maxillofacial reconstruction. Best harvest site and grafting procedure remain discussed to ensure stable bone quantity and density, without serious complications. The purpose of this study was to evaluate implant rate success and complications of maxilla-mandibular bone reconstruction with parietal bone grafting as pre-implant surgery. Patients who have been operated on by a same surgeon for pre-implant surgery using parietal bone grafting were retrospectively included. All different reconstruction sites were considered (symphysis menti, mandibular corpus, maxillary sinus and premaxilla), as well as different aetiologies (dental or periodontal infection, dento-alveolar traumatic wound or congenital missing teeth), except neoplastic aetiology. Implant osseointegration was clinically evaluated, and by a CT scan systematically realized 6 months after the surgery. 311 procedures in 211 patients were encountered. There were no serious complications in the harvest site. Few infections and low bone resorption were observed. The implant success rate was 95% overall. A secondary grafting procedure was necessary for 6.1% of the patients. With a safe harvesting procedure and an implant success rate similar to that seen in the literature, parietal bone grafting possesses the qualities required in pre-implant surgery.