Effect of recombinant human bone morphogenetic protein-2 on bone formation in alveolar ridge defects in dogs |
| |
Authors: | Nagao H Tachikawa N Miki T Oda M Mori M Takahashi K Enomoto S |
| |
Institution: | Clinic for Oral Implantology, University Hospital, Faculty of Dentistry, Tokyo Medical and Dental University, Japan. hnagao.impl@tmd.ac.jp |
| |
Abstract: | This study was designed to evaluate the effect of recombinant human bone morphogenetic protein-2 (rhBMP-2) combined with poly D, L lactic-co-glycolic acid (PLGA)/gelatin sponge complex (PGS) on the formation of bone in critically sized marginal defects of the mandible in dogs. Three months after extraction of the pre-molar teeth, rectangular bone defects (10 x 8 x 7 mm) were made in both sides of the mandible. A PGS block soaked in rhBMP-2 (400 microgram/ml) was implanted into one defect (BMP (+) group). As control, an untreated PGS block was implanted into the contralateral defect (BMP (-) group). 2, 4, 8, and 12 weeks after implantation, the defects were examined. In the BMP (+) group, newly formed bone was found in all defects from 4 weeks onward and was marked at 12 weeks. In contrast, the BMP (-) group showed no appreciable new bone formation, even at 12 weeks. Moreover, density of newly formed bone in the BMP (+) group was similar to that of the surrounding cortical bone at 12 weeks. These findings suggest that rhBMP-2/PGS is an effective bone substitute for reconstructive surgery of the dog mandible. |
| |
Keywords: | |
本文献已被 ScienceDirect PubMed 等数据库收录! |
|