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J Periodontal Implant Sci. 2019 Apr;49(2):114-126. English. Original Article. https://doi.org/10.5051/jpis.2019.49.2.114
Hwang JH , Oh S , Kim S .
Department of Periodontology, Dental Research Institute, Seoul National University School of Dentistry, Seoul, Korea. kst72@snu.ac.kr
Department of Dental Biomaterials, Institute of Biomaterials-Implant, Wonkwang University School of Dentistry, Iksan, Korea.
Abstract

Purpose

The aim of this study was to evaluate the enhancement of osteogenic potential of biphasic calcium phosphate (BCP) bone substitute coated with Escherichia coli-derived recombinant human bone morphogenetic protein-2 (ErhBMP-2) and epigallocatechin-3-gallate (EGCG).

Methods

The cell viability, differentiation, and mineralization of osteoblasts was tested with ErhBMP-2-/EGCG solution. Coated BCP surfaces were also investigated. Standardized, 6-mm diameter defects were created bilaterally on the maxillary sinus of 10 male New Zealand white rabbits. After removal of the bony windows and elevation of sinus membranes, ErhBMP-2-/EGCG-coated BCP was applied on one defect in the test group. BCP was applied on the other defect to form the control group. The animals were sacrificed at 4 or 8 weeks after surgery. Histologic and histometric analyses of the augmented graft and surrounding tissue were performed.

Results

The 4-week and 8-week test groups showed more new bone (%) than the corresponding control groups (P<0.05). The 8-week test group showed more new bone (%) than the 4-week test group (P<0.05).

Conclusions

ErhBMP-2-/EGCG-coated BCP was effective as a bone graft material, showing enhanced osteogenic potential and minimal side effects in a rabbit sinus augmentation model.

Copyright © 2019. Korean Association of Medical Journal Editors.