Augmentation through guided bone regeneration in horizontal bone reconstruction

Objective: The objective of the study was to evaluate the success rate of guided bone regeneration (GRB) technique in the horizontal reconstruction of atrophied alveolar ridge using the Cytoplast™ Barrier Membrane in combination with anorganic bovine-derived bone mineral (ABBM) and autologous bone. Material and Method: This clinical study included fifteen patients, who presented partial mandibullary and maxillary edentations and were eligible for implanto-prosthetic rehabilitation. Two had co-morbidities - drug-controlled type II diabetes mellitus (DM) and six were smokers. All patients underwent GBR surgery, because all of them required horizontal crestal bone enlargement so that dental implants could be inserted. Treatment was made using the Cytoplast™ Barrier Membrane, a titanium-reinforced high-density polytetrafluoroethylene membrane (Ti-PTFE) and a mixture of 75% ABBM with 25% autologous bone. Maxillary reconstruction sites represented 40% and mandibulary reconstruction sites represented 60%. Eight months after surgery the Ti-PTFE membrane was removed and the new dimension of the crest was determined, clinically and with cone beam computed tomography (CBCT) investigations. Results: The successful reconstructed areas, showed good incorporation and osteoconductive potential. The reconstruction site was successful for the diabetes patients. Referring to the smoke habit, the reconstruction site was successful for 66% of them. Conclusion: The use of the Cytoplast™ Barrier Membrane in combination with ABBM and autologous bone showed a success rate of 60 %. The reconstruction site was stable after ridge augmentation and supported the functional loading of the implant.