Incorporation of silver nanoparticles on the surface of orthodontic microimplants to achieve antimicrobial properties / 대한치과교정학회지
The Korean Journal of Orthodontics
;
: 3-10, 2017.
Article
in English
| WPRIM
| ID: wpr-225724
ABSTRACT
OBJECTIVE:
Microbial aggregation around dental implants can lead to loss/loosening of the implants. This study was aimed at surface treating titanium microimplants with silver nanoparticles (AgNPs) to achieve antibacterial properties.METHODS:
AgNP-modified titanium microimplants (Ti-nAg) were prepared using two methods. The first method involved coating the microimplants with regular AgNPs (Ti-AgNP) and the second involved coating them with a AgNP-coated biopolymer (Ti-BP-AgNP). The topologies, microstructures, and chemical compositions of the surfaces of the Ti-nAg were characterized by scanning electron microscopy (SEM) equipped with energy-dispersive spectrometer (EDS) and X-ray photoelectron spectroscopy (XPS). Disk diffusion tests using Streptococcus mutans, Streptococcus sanguinis, and Aggregatibacter actinomycetemcomitans were performed to test the antibacterial activity of the Ti-nAg microimplants.RESULTS:
SEM revealed that only a meager amount of AgNPs was sparsely deposited on the Ti-AgNP surface with the first method, while a layer of AgNP-coated biopolymer extended along the Ti-BP-AgNP surface in the second method. The diameters of the coated nanoparticles were in the range of 10 to 30 nm. EDS revealed 1.05 atomic % of Ag on the surface of the Ti-AgNP and an astounding 21.2 atomic % on the surface of the Ti-BP-AgNP. XPS confirmed the metallic state of silver on the Ti-BP-AgNP surface. After 24 hours of incubation, clear zones of inhibition were seen around the Ti-BP-AgNP microimplants in all three test bacterial culture plates, whereas no antibacterial effect was observed with the Ti-AgNP microimplants.CONCLUSIONS:
Titanium microimplants modified with Ti-BP-AgNP exhibit excellent antibacterial properties, making them a promising implantable biomaterial.
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Silver
/
Streptococcus
/
Streptococcus mutans
/
Titanium
/
Biopolymers
/
Microscopy, Electron, Scanning
/
Dental Implants
/
Aggregatibacter actinomycetemcomitans
/
Diffusion
/
Nanoparticles
Language:
English
Journal:
The Korean Journal of Orthodontics
Year:
2017
Type:
Article
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