Strontium-substituted bioactive glasses in vitro osteogenic and antibacterial effects.

Dent Mater 2016 Mar 8;32(3):412-22. Epub 2016 Jan 8.

Barts & The London School of Medicine and Dentistry, Institute of Dentistry, Queen Mary University of London, 4 Newark Street, London E1 2AT, UK. Electronic address:

Objectives: Bioactive glass forms a bone mineral apatite interface and can be engineered to promote optimal bone regeneration. Strontium (Sr(2+)) stimulates osteoblast and inhibits osteoclast activities in vitro, and is used clinically as a treatment for osteoporosis. Dental bone defect repair requires rapid bone formation for early osseointegration but, can be subject to infection. The aim of this study was to investigate the osteogenic and antibacterial effects of strontium-substituted bioactive glasses in vitro.

Methods: Strontium-substituted bioactive glasses were designed and produced. Then the osteogenic potential and antibacterial effects of bioactive glass particulates were explored.

Results: Alkaline phosphatase activity, cell number, Type I collagen and mineral nodule formation of MC3T3-E1 cells were significantly promoted by the 5% strontium-substituted glass (5Sr). Furthermore, after incubation with 0.001g and 0.01g glass particulates, the growth of sub-gingival bacteria, Aggregatibacter actinomycetemcomitans and Porphyromonas gingivalis was significantly inhibited; the antibacterial activity being dependent on the percentage of strontium in the glasses.

Significance: These results show that strontium-substituted bioactive glasses significantly promote osteogenic responses of MC3T3-E1 osteoblast-like cells and inhibit the growth of A. actinomycetemcomitans and P. gingivalis.

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.dental.2015.12.013DOI Listing
March 2016

Publication Analysis

Top Keywords

bioactive glasses
16
strontium-substituted bioactive
16
antibacterial effects
12
bioactive glass
8
glass particulates
8
osteogenic antibacterial
8
strontium-substituted
5
bioactive
5
study investigate
4
actinomycetemcomitans porphyromonas
4
designed produced
4
infection aim
4
aim study
4
effects strontium-substituted
4
glasses vitromethods
4
vitromethods strontium-substituted
4
porphyromonas gingivalis
4
aggregatibacter actinomycetemcomitans
4
glasses designed
4
investigate osteogenic
4

Similar Publications