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Experimental antimicrobial orthodontic adhesives using nanofillers and silver nanoparticle

Cited 163 time in Web of Science Cited 184 time in Scopus
Authors
Ahn, Sug-Joon; Lee, Shin-Jae; Kook, Joong-Ki; Lim, Bum-Soon
Issue Date
2009-02
Publisher
Elsevier
Citation
DENTAL MATERIALS 2009;2:206-213.
Keywords
antimicrobial orthodontic adhensivesliver nanoparticlesnano fillerssurface energysurface roughness
Abstract
Objectives
Experimental composite adhesives (ECAs) containing silica nanofillers and silver nanoparticles were compared with two conventional adhesives (composite and resin-modified glass ionomer [RMGI]) to analyze surface characteristics, physical properties and antibacterial activities against cariogenic streptococci.
Methods
Surface roughness and surface free energy (SFE) characteristics were measured using confocal laser scanning microscopy and the sessile drop method. Shear bond strength and bond failure interface were analyzed to compare the physical properties. Antimicrobial activities were analyzed by a bacterial adhesion assay, a disk diffusion test, and an optical density measurement of bacterial suspension containing each adhesive.

Results
ECAs had rougher surfaces than conventional adhesives due to the addition of silver nanoparticles. ECAs had more similar SFE characteristics to composite than to RMGI. Bacterial adhesion to ECAs was less than to conventional adhesives, which was not influenced by saliva coating. Bacterial suspension containing ECAs showed slower bacterial growth than those containing conventional adhesives. There was no significant difference in shear bond strength and bond failure interface between ECAs and conventional adhesives.

Significance
This study suggests that ECAs can help prevent enamel demineralization around their surfaces without compromising physical properties.
ISSN
0109-5641
Language
English
URI
https://hdl.handle.net/10371/47515
DOI
https://doi.org/10.1016/j.dental.2008.06.002
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College of Dentistry/School of Dentistry (치과대학/치의학대학원)Dept. of Dentistry (치의학과)Journal Papers (저널논문_치의학과)
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