Objectives: The purpose of the present study was to compare clinicaly, histologically and histomorphometrically between two mineralized bone graft materials, in two cases of bilateral maxillary sinus augmentation. Method: This report presents two cases of missing upper posterior teeth, with initial residual maxillary bone height of less than 5 mm. Treatment plan included sinus augmentation using lateral window technique. In the first stage, both patients had undergone a bilateral sinus floor grafting using two different mineralized materials. Right sinus of each patient was augmented using bovine mineralized bovine bone€ and left sinus with mineralized allograft ₫. In the second stage, 9 months later, implants were placed in the augmented sites. Prior to implants placement a 2mm apico-coronally core biopsies were harvested using a Trephine bur. Results: No complications were observed during the surgical procedures; all patients healed uneventfully. No signs or symptoms of maxillary sinus disease were observed during 9 months after surgery. Sites augmented with bovine mineralized bone were significally more radiopaque.
The histomorphometrical analysis showed an average new bone formation of 37% and 42%, residual graft particles of 18% and 24.7% and connective tissue of 45% and 33.3% for FDBA and bovine mineralized bone, respectively. Conclusions: Mineralized allograft ₫ used in this study have shown to be osteoconductive and biocompatible. FDBA demonstrated good results generating new bone thus could be recommended for maxillary sinus augmentation procedures.
€ Bio-Oss, Geistlich Biomaterials, Wolhousen, Switzerland
₫ Ora-Graft,