Improved performance of diatomite-based dental nanocomposite ceramics using layer-by-layer assembly

Xiaoli Lu1,2, Yang Xia1, Mei Liu1, Yunzhu Qian3, Xuefeng Zhou4, Ning Gu4, Feimin Zhang1,41Institute of Stomatology, Nanjing Medical University, Nanjing, 2Nantong Stomatological Hospital, Nantong, 3Center of Stomatology, The Second Affiliated Hospital of Suzhou University, Suzhou, 4Suzhou Institute,...

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Autores principales:	Lu X, Xia Y, Liu M, Qian Y, Zhou X, Gu N, Zhang F
Formato:	article
Lenguaje:	EN
Publicado:	Dove Medical Press 2012
Materias:	Medicine (General) R5-920
Acceso en línea:	https://doaj.org/article/3023d2b344e74e9db613f16ad68559a9
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spelling	oai:doaj.org-article:3023d2b344e74e9db613f16ad68559a92021-12-02T01:50:38ZImproved performance of diatomite-based dental nanocomposite ceramics using layer-by-layer assembly1176-91141178-2013https://doaj.org/article/3023d2b344e74e9db613f16ad68559a92012-04-01T00:00:00Zhttp://www.dovepress.com/improved-performance-of-diatomite-based-dental-nanocomposite-ceramics--a9767https://doaj.org/toc/1176-9114https://doaj.org/toc/1178-2013Xiaoli Lu1,2, Yang Xia1, Mei Liu1, Yunzhu Qian3, Xuefeng Zhou4, Ning Gu4, Feimin Zhang1,41Institute of Stomatology, Nanjing Medical University, Nanjing, 2Nantong Stomatological Hospital, Nantong, 3Center of Stomatology, The Second Affiliated Hospital of Suzhou University, Suzhou, 4Suzhou Institute, Southeast University, Suzhou, People&#39;s Republic of ChinaAbstract: To fabricate high-strength diatomite-based ceramics for dental applications, the layer-by-layer technique was used to coat diatomite particles with cationic [poly(allylamine hydrochloride)] and anionic [poly(sodium 4-styrenesulfonate)] polymers to improve the dispersion and adsorption of positively charged nano-ZrO2 (zirconia) as a reinforcing agent. The modified diatomite particles had reduced particle size, narrower size distribution, and were well dispersed, with good adsorption of nano-ZrO2. To determine the optimum addition levels for nano-ZrO2, ceramics containing 0, 20, 25, 30, and 35 wt% nano-ZrO2 were sintered and characterized by the three-point bending test and microhardness test. In addition to scanning electron microscopy, propagation phase-contrast synchrotron X-ray microtomography was used to examine the internal structure of the ceramics. The addition of 30 wt% nano-ZrO2 resulted in the highest flexural strength and fracture toughness with reduced porosity. Shear bond strength between the core and veneer of our diatomite ceramics and the most widely used dental ceramics were compared; the shear bond strength value for the diatomite-based ceramics was found to be significantly higher than for other groups (P &lt; 0.05). Our results show that diatomite-based nanocomposite ceramics are good potential candidates for ceramic-based dental materials.Keywords: layer-by-layer, diatomite, nanoceramics, zirconia (ZrO2), dental materialsLu XXia YLiu MQian YZhou XGu NZhang FDove Medical PressarticleMedicine (General)R5-920ENInternational Journal of Nanomedicine, Vol 2012, Iss default, Pp 2153-2164 (2012)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine (General) R5-920
spellingShingle	Medicine (General) R5-920 Lu X Xia Y Liu M Qian Y Zhou X Gu N Zhang F Improved performance of diatomite-based dental nanocomposite ceramics using layer-by-layer assembly
description	Xiaoli Lu1,2, Yang Xia1, Mei Liu1, Yunzhu Qian3, Xuefeng Zhou4, Ning Gu4, Feimin Zhang1,41Institute of Stomatology, Nanjing Medical University, Nanjing, 2Nantong Stomatological Hospital, Nantong, 3Center of Stomatology, The Second Affiliated Hospital of Suzhou University, Suzhou, 4Suzhou Institute, Southeast University, Suzhou, People&#39;s Republic of ChinaAbstract: To fabricate high-strength diatomite-based ceramics for dental applications, the layer-by-layer technique was used to coat diatomite particles with cationic [poly(allylamine hydrochloride)] and anionic [poly(sodium 4-styrenesulfonate)] polymers to improve the dispersion and adsorption of positively charged nano-ZrO2 (zirconia) as a reinforcing agent. The modified diatomite particles had reduced particle size, narrower size distribution, and were well dispersed, with good adsorption of nano-ZrO2. To determine the optimum addition levels for nano-ZrO2, ceramics containing 0, 20, 25, 30, and 35 wt% nano-ZrO2 were sintered and characterized by the three-point bending test and microhardness test. In addition to scanning electron microscopy, propagation phase-contrast synchrotron X-ray microtomography was used to examine the internal structure of the ceramics. The addition of 30 wt% nano-ZrO2 resulted in the highest flexural strength and fracture toughness with reduced porosity. Shear bond strength between the core and veneer of our diatomite ceramics and the most widely used dental ceramics were compared; the shear bond strength value for the diatomite-based ceramics was found to be significantly higher than for other groups (P &lt; 0.05). Our results show that diatomite-based nanocomposite ceramics are good potential candidates for ceramic-based dental materials.Keywords: layer-by-layer, diatomite, nanoceramics, zirconia (ZrO2), dental materials
format	article
author	Lu X Xia Y Liu M Qian Y Zhou X Gu N Zhang F
author_facet	Lu X Xia Y Liu M Qian Y Zhou X Gu N Zhang F
author_sort	Lu X
title	Improved performance of diatomite-based dental nanocomposite ceramics using layer-by-layer assembly
title_short	Improved performance of diatomite-based dental nanocomposite ceramics using layer-by-layer assembly
title_full	Improved performance of diatomite-based dental nanocomposite ceramics using layer-by-layer assembly
title_fullStr	Improved performance of diatomite-based dental nanocomposite ceramics using layer-by-layer assembly
title_full_unstemmed	Improved performance of diatomite-based dental nanocomposite ceramics using layer-by-layer assembly
title_sort	improved performance of diatomite-based dental nanocomposite ceramics using layer-by-layer assembly
publisher	Dove Medical Press
publishDate	2012
url	https://doaj.org/article/3023d2b344e74e9db613f16ad68559a9
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_version_	1718402825667477504

Improved performance of diatomite-based dental nanocomposite ceramics using layer-by-layer assembly

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