The present article describes the treatment given to a patient who underwent horizontal ridge augmentation surgery in the maxillary anterior area due to the premature loss of the maxillary central incisors. The complete dehiscence of the buccal plate was detected after elevation of mucoperiosteal flaps. The lesion was overfilled with deproteinized bovine xenograft particles combined with recombinant human platelet-derived growth factor BB (rhPDGF-BB) and covered with a porcine collagen barrier hydrated with the same growth factor. The soft tissues healed with no adverse complications. After 12 months, reentry surgery was carried out to place endosseous implants. Complete bone regeneration with the presence of bone-like tissue was observed. Cross-sectional computed tomography scan images confirmed integration of the bone graft and reconstruction of the lost hard tissue volume. The implants were inserted in an optimal three-dimensional position, thus facilitating esthetic restoration. Two years after insertion of final crowns, cone beam computed tomography scans displayed the stability of regenerated hard tissues around the implants. Controlled clinical studies are necessary to determine the benefit of hydrating bovine bone particles and collagen barriers with rhPDGF-BB for predictable bone regeneration of horizontal lesions.
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