Development of alveolar ridge awgmentation with active GBR

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We planned Guided Bone Regeneration (GBR) with recombinant human BMP-2 for the purpose of the restoration of alveolar bone defect. We named this method, <active GBR> and we already reported the results of our research.If we use this method, we can certainly restore the larger bone defects as well as the small bone defects in periodontal field and we also have many successful results of animal experiment about the alveolar ridge augmentation. Furthermore, we should restore not only the shape but the function of the mandibular bone with this method.So we inserted the dental implants in the newly formed bone and tried to evaluate the efficacy of rhBMP-2 for mandibular functional reconstructionAt first we restored the mandibular bone defects of beagle dog with rhBMP-2 and carrier material. 8 weeks after operation, titanium dental implants were inserted in the newly formed bone and we examined the regenerated bone tissue radiographically and histologically after implantation.As the results, intimate contact between the dental implants and the induced bone was observed in 4 weeks, and the area of osseointegration between newly induced bone and the implant surface increased time-dependently. Furthermore we could placeprosthetic suprastructure and load under appropriate conditions.Consequently, by <active GBR> with rhBMP-2-, we can effectively restore the alveolar bone defect for functional rehabilitation.