Effect of implant surface microtopography by hydroxyapatite grit-blasting on adhesion, proliferation, and differentiation of osteoblast-like cell line, MG-63.
10.5125/jkaoms.2011.37.3.214
- Author:
Sung Jae PARK
1
;
Sang Bum BAE
;
Su Kyoung KIM
;
Tae Gwan EOM
;
Seung Il SONG
Author Information
1. Department of Dentistry, School of Medicine, Ajou University, Suwon, Korea. ssi1219@ajou.ac.kr
- Publication Type:In Vitro ; Original Article
- Keywords:
Osseointegration;
Osteogenesis;
Microtopography;
Surface roughness;
RBM (resorbable blasting media)
- MeSH:
Anthraquinones;
Cell Adhesion;
Cell Differentiation;
Cell Line;
Cell Proliferation;
Collagen Type I;
Dinoprostone;
Durapatite;
Enzyme-Linked Immunosorbent Assay;
Gene Expression;
Humans;
Osseointegration;
Osteoblasts;
Osteocalcin;
Osteogenesis;
Osteopontin;
Transforming Growth Factor beta1
- From:Journal of the Korean Association of Oral and Maxillofacial Surgeons
2011;37(3):214-224
- CountryRepublic of Korea
- Language:English
-
Abstract:
OBJECTIVE: This study examined the potential of the in vitro osteogenesis of microtopographically modified surfaces, RBM (resorbable blasting media) surfaces, which generate hydroxyapatite grit-blasting. METHODS: RBM surfaces were modified hydroxyapatite grit-blasting to produce microtopographically modified surfaces and the surface morphology, roughness or elements were examined. To investigate the potential of the in vitro osteogenesis, the osteoblastic cell adhesion, proliferation, and differentiation were examined using the human osteoblast-like cell line, MG-63 cells. Osteoblastic cell proliferation was examined as a function of time. In addition, osteoblastic cell differentiation was verified using four different methods of an ALP activity assay, a mineralization assay using alizarin red-s staining, and gene expression of osteoblastic differentiation marker using RT-PCR or ELISA. RESULTS: Osteoblastic cell adhesion, proliferation and ALP activity was elevated on the RBM surfaces compared to the machined group. The cells exhibited a high level of gene expression of the osteoblastic differentiation makers (osteonectin, type I collagen, Runx-2, osterix). imilar data was represented in the ELISA produced similar results in that the RBM surface increased the level of osteocalcin, osteopontin, TGF-beta1 and PGE2 secretion, which was known to stimulate the osteogenesis. Moreover, alizarin red-s staining revealed significantly more mineralized nodules on the RBM surfaces than the machined discs. CONCLUSION: RBM surfaces modified with hydroxyapatite grit-blasting stimulate the in vitro osteogenesis of MG-63 cells and may accelerate bone formation and increase bone-implant contact.
