Stability of autogenous bone grafts after sinus lift procedures: A comparative study between anterior and posterior aspects of the iliac crest and an intraoral donor site


    loading  Checking for direct PDF access through Ovid

Abstract

BackgroundAutologous bone is the standard material used for augmentations in oral-maxillofacial surgery. Depending on the origin of the graft, subsequent bone resorption may vary.Study designThis prospective study evaluated 57 patients receiving 2-stage sinus floor augmentations. Monocortical samples were taken at the site of bone harvesting, including the posterior (n = 28) and anterior pelvic (n = 15) and retromolar (n = 14) regions. At second-stage surgery, 6 months after the implant insertion, bone cores were harvested at the site of implant placement. All samples were analyzed by microradiography.ResultsMean retromolar mineralization was 68.7% ± 8.75%; 35.1% ± 7.6% in the anterior and 30.7% ± 9.5% in the posterior iliac crest. Areas augmented with grafts originating from the retromolar region showed a significant decrease to 53.0% ± 5.15% (P = .001). A stable mineralization of 36.1% ± 7.59% was found in sites where bone grafts from the anterior pelvic crest were used. Grafts from the posterior pelvis showed a slight increase to 34.5% ± 6.5%.ConclusionThis prospective clinical study demonstrates the differences in mineralization depending on the origin of autogenous bone. Even after 6 months, these values could still be correlated to the transplants origin.

    loading  Loading Related Articles