Accelerated bone formation in distracted alveolar bone after injection of recombinant human bone morphogenetic protein-2

치과대학/박사This study was done to evaluate the effect of recombinant human bone morphogenic protein-2 (rhBMP-2) on enhancing the quality and quantity of regenerated bone when injected into distracted alveolar bone. Sixteen adult beagle dogs were assigned to either the control or rhBMP-2 group. After distraction was completed, an rhBMP-2 dose of 330 µg in 0.33 ml was injected slowly into the distracted alveolar crest of the mesial, middle, and distal parts of the alveolar bone in the experimental group. Histological and micro-computed tomography analyses of regenerated bone were done after 2 and 6 weeks of consolidation. After 6 weeks of consolidation, the vertical defect height of regenerated bone was statistically lower in the rhBMP-2 group (2.2 mm) than in the control group (3.4 mm) (P <0.05). Additionally, the width of the regenerated bone was significantly greater in the rhBMP-2 group (4.3 mm) than in the control group (2.8 mm) (P <0.05). The bone density and volume of regenerated bone in the rhBMP-2 group were denser and greater, respectively, than in the control group after 6 weeks of consolidation (P