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Clin Oral Implants Res. 2011 Feb;22(2):173-81. doi: 10.1111/j.1600-0501.2010.01976.x.

Repair of bone defects around dental implants with bone morphogenetic protein/fibroblast growth factor-loaded porous calcium phosphate cement: a pilot study in a canine model.

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  • 1Department of Stomatology, East Hospital affiliated to Tongji University, Jimo Road No. 150, Shanghai, China.

Abstract

OBJECTIVES:

To study the effects of the bone morphogenetic protein-2 (BMP-2)/fibroblast growth factor (bFGF)-loaded porous calcium phosphate cement (CPC) on the repair of bone defects around dental implants.

MATERIAL AND METHODS:

Thirty critical-sized bone defects in beagle dogs were repaired with engineered bone composed of autologous bone-marrow-derived mesenchymal stem cells (BMSCs), BMP-2, bFGF and CPC. Repairs were divided into six groups: BMSC/BMP-2/bFGF/CPC, BMSC/BMP-2/CPC, BMSC/bFGF/CPC, BMSC/CPC, CPC and no treatment. Polychrome sequential fluorescent labels were also performed post-operatively. Fluorescence histological examinations of undecalcified sections at post-operative week 12 were performed to clarify changes in the new bone around the dental implants.

RESULTS:

The animals exhibited a perfect post-operative course, with none experiencing any infection. Undecalcified sections showed that new bone was actively formed in the BMP-2/bFGF group after 12 weeks. The bone mineralization apposition rate was better in the BMP-2/bFGF group than in the other groups (P<0.05).

CONCLUSION:

BMP-2 and bFGF together are more effective than either one alone in promoting the formation of new bone and may exert a synergistic activity at bone defects around dental implants.

© 2010 John Wiley & Sons A/S.

PMID:
20678131
[PubMed - indexed for MEDLINE]
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