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Volume 23 , Issue 5
September/October 2008

Pages 935942

Deproteinized Bovine Bone Versus b-Tricalcium Phosphate in Sinus Augmentation Surgery: A Comparative Histologic and Histomorphometric Study

Antonin Simunek, MD, PhD/Dana Kopecka, MD, PhD/Rakesh V. Somanathan, BDS/Shriharsha Pilathadka, BDS/Tomas Brazda, MD

PMID: 19014165

Purpose: To compare the efficacy of 2 common materials in sinus augmentation surgery and to assess their contribution when enriched with autogenous bone. Materials and Methods: The prospective human study was performed in 48 sinus grafting operations using b-tricalcium phosphate or deproteinized bovine bone (pure or mixed with 10% to 20% autogenous bone) or autogenous bone. Biopsy specimens were taken after 9 months. Statistical evaluation was done with a 2-sample t test (P < .05). Results: When autogenous bone was used, 49.2% 3.1% of new bone was found, which is significantly higher than in all the other groups. A higher proportion (34.2% 13.1%) of the new vital bone was found in the deproteinized bovine bone group, in comparison with the b-tricalcium phosphate group (21.4% 8.1%) and the b-tricalcium phosphate composite graft group (24.0% 6.6%; P < .05). No significant differences between single-component grafts and corresponding composite grafts were established. Conclusions: Sinus augmentation with the aforementioned augmentation materials is a well-accepted procedure. However, autogenous bone alone was the best material. More new bone was found using deproteinized bovine bone than b-tricalcium phosphate. The addition of 10% to 20% autogenous bone to the bone substitute did not significantly influence the new bone formation. Int J Oral Maxillofac Implants 2008;23:935942

Key words: autogenous bone graft, b-tricalcium phosphate, composite graft, deproteinized bovine bone, histomorphometry, sinus augmentation

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