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Publisher: Peytchinski, Gospodin Iliev
ISSN: 1312 773X (Online)
Issue: 2016, vol. 22, issue 1
Subject Area: Medicine&Dentistry
Pages: 1056-1062
DOI: 10.5272/jimab.2016221.1056
Published online: 16 March 2016
J of IMAB 2016 Jan-Mar;22(1):1056-1062
PHYSICAL PROPERTIES OF NANOCOMPOSITES IN RELATION TO THEIR ADVANTAGES
Maya Lyapina1 
, Mariana Cekova2, Assya Krasteva2, Maria Dencheva2, Mariela Yaneva-Deliverska3, Angelina Kisselova2
1) Department of Hygiene, Medical Ecology and Nutrition, Medical Faculty, Medical University Sofia, Bulgaria,
2) Department of Oral and Image Diagnostic, Faculty of Dental Medicine, Medical University Sofia, Bulgaria,
3) Department of Medical Ethics and Law, Faculty of Public Health, Medical University Sofia, Bulgaria.
ABSTRACT:
Extensive studies have been undertaken to improve dental composites with advances in filler compositions and resin chemistry. The unique nature of the filler particles of nanocomposites provides mechanical strength and wear resistance similar to hybrid composites, and superior polish and gloss retention similar to micro fill composites. The polymerization shrinkage in composites depends on the chemistry of the organic matrix. The flexural strength depends on the filler content and the filler chemistry. The nanometric particles and nanoclusters in the nanocomposites improve mechanical properties such as compressive strength, flexural strengths, and wear resistance of several nanocomposites were as good as those of universal hybrid composites. They provide high esthetics, hence they can provide optimal optical characteristics since the size of the nanometric particle is below the wavelength of light. This is relevant because the size is not measurable by the refractive index that can result in formulations having a broad spectrum of shade and opacity. Nanocomposite denture teeth comprises of polymethylmethacrylate, and uniformly dispersed nano - sized filler particles. Their advantages are: - highly polishable, stain and impact resistant material; - lively surface structure; - superior surface hardness and wear resistance.
Key words: nanodentistry, dental restorative materials, nanocomposites, physical properties, nanocomposite denture teeth,
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Please cite this article in PubMed Style or AMA (American Medical Association) Style:
Lyapina M, Cekova M, Krasteva A, Dencheva M, Yaneva-Deliverska M, Kisselova A. Physical properties of nanocomposites in relation to their advantages. J of IMAB. 2016 Jan-Mar;22(1):1056-1062.
DOI: http://dx.doi.org/10.5272/jimab.2016221.1056.
Correspondence to: Maya Lyapina, MD. Department of Hygiene, Medical Ecology and Nutrition, Medical Faculty, Medical University, Sofia; 15, Acad. Ivan Evstr. Geshov Blvd ., 1431 Sofia, Bulgaria;
E-mail: saly_grigory@abv.bg
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Received: 22 December 2015
Published online: 16 March 2016