Journal of the Korean Association of Oral and Maxillofacial Surgeons

  • 제42권2호
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  • Pages.90-98
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  • 2016
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  • 2234-7550(pISSN)
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  • 2234-5930(eISSN)
대한구강악안면외과학회 (The Korean Association of Oral and Maxillofacial Surgeons)
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Demineralized dentin matrix combined with recombinant human bone morphogenetic protein-2 in rabbit calvarial defects

  • Um, In-Woong (R&D Institute, Korea Tooth Bank) ;
  • Hwang, Suk-Hyun (Department of Medicine, Korea University Graduate School) ;
  • Kim, Young-Kyun (Department of Oral and Maxillofacial Surgery, Section of Dentistry, Seoul National University Bundang Hospital) ;
  • Kim, Moon-Young (Department of Oral and Maxillofacial Surgery, College of Dentistry, Dankook University) ;
  • Jun, Sang-Ho (Department of Dentistry, Korea University Anam Hospital) ;
  • Ryu, Jae-Jun (Department of Dentistry, Korea University Anam Hospital) ;
  • Jang, Hyon-Seok (Department of Dentistry, Korea University Ansan Hospital)
  • 투고 : 2016.01.20
  • 심사 : 2016.03.13
  • 발행 : 2016.04.30
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초록

Objectives: The aim of this study was to compare the osteogenic effects of demineralized dentin matrix (DDM) combined with recombinant human bone morphogenetic protein-2 (rhBMP-2) in rabbit calvarial defects with DDM and anorganic bovine bone (ABB) combined with rhBMP-2. Materials and Methods: Four round defects with 8-mm diameters were created in each rabbit calvaria. Each defect was treated with one of the following: 1) DDM, 2) ABB/rhBMP-2, or 3) DDM/rhBMP-2. The rhBMP-2 was combined with DDM and ABB according to a stepwise dry and dip lyophilizing protocol. Histological and microcomputed tomography (${\mu}CT$) analyses were performed to measure the amount of bone formation and bone volume after 2- and 8-week healing intervals. Results: Upon histological observation at two weeks, the DDM and ABB/rhBMP-2 groups showed osteoconductive bone formation, while the DDM/rhBMP-2 group showed osteoconductive and osteoinductive bone formation. New bone formation was higher in DDM/rhBMP-2, DDM and ABB decreasing order. The amounts of bone formation were very similar at two weeks; however, at eight weeks, the DDM/rhBMP-2 group showed a twofold greater amount of bone formation compared to the DDM and ABB/rhBMP-2 groups. The ${\mu}CT$ analysis showed markedly increased bone volume in the DDM/rhBMP-2 group at eight weeks compared with that of the DDM group. Notably, there was a slight decrease in bone volume in the ABB/rhBMP-2 group at eight weeks. There were no significant differences among the DDM, ABB/rhBMP-2, and DDM/rhBMP-2 groups at two or eight weeks. Conclusion: Within the limitations of this study, DDM appears to be a suitable carrier for rhBMP-2 in orthotopic sites.

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참고문헌

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