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26 April 2018 Monitoring of copper nanoparticle penetration into dentin of human tooth in vitro
Alexey A. Selifonov, Evgeny G. Glukhovskoy, Yulia S. Skibina, Andrey M. Zakharevich, Nadezhda N. Begletsova, Valery V. Tuchin
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Proceedings Volume 10716, Saratov Fall Meeting 2017: Optical Technologies in Biophysics and Medicine XIX; 107161A (2018) https://doi.org/10.1117/12.2317474
Event: Saratov Fall Meeting 2017, 2017, Saratov, Russian Federation
Abstract
Study of the penetration depth of synthesized copper nanoparticles into cut samples of human dentin was conducted. The scanning electron microscopy was used to determine the elemental composition of fresh transverse cleavage of the dentin cut for determination of the copper nanoparticles penetration with an effective antiseptic effect. The morphology of the cut surface of the dentin of a human tooth was studied and the lower limit of the diffusion boundary was determined. It was found that copper nanoparticles penetrate into the dentin cut to a depth of ~ 1.8 μm with the diffusion coefficient of 1.8×10–11 cm2/s. Despite the rather small size of the synthesized copper nanoparticles (20-80 nm), a rather small penetration depth can be explained by the high aggregation ability of copper nanoparticles, as well as the ability of a micellar solution of sodium dodecyl sulfate, in which nanoparticles were stabilized, to form conglomerates in micelles of much larger sizes.
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Alexey A. Selifonov, Evgeny G. Glukhovskoy, Yulia S. Skibina, Andrey M. Zakharevich, Nadezhda N. Begletsova, and Valery V. Tuchin "Monitoring of copper nanoparticle penetration into dentin of human tooth in vitro", Proc. SPIE 10716, Saratov Fall Meeting 2017: Optical Technologies in Biophysics and Medicine XIX, 107161A (26 April 2018); https://doi.org/10.1117/12.2317474
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KEYWORDS
Nanoparticles
Copper
Teeth
Scanning electron microscopy
Diffusion
In vitro testing
Metals
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