Skip navigation

Assessment of the impact of the addition of nanoparticles on the properties of glass–ionomer cements

Assessment of the impact of the addition of nanoparticles on the properties of glass–ionomer cements

Gjorgievska, Elizabeta, Nicholson, John W, Gabric, Dragana, Guclu, Zeynep Alsi, Miletic, Ivana and Coleman, Nichola (2020) Assessment of the impact of the addition of nanoparticles on the properties of glass–ionomer cements. Materials, 13 (2):276. ISSN 1996-1944 (doi:https://doi.org/10.3390/ma13020276)

[img]
Preview
PDF (Publisher's PDF - Open Access)
26549 COLEMAN_Assessment_Of_The_Impact_Of_The_Addition_Of_Nanoparticles_Glass-ionomer_Cements_(OA)_2019.pdf - Published Version
Available under License Creative Commons Attribution.

Download (6MB) | Preview

Abstract

The aim of the study was to evaluate the effects of incorporation of Al2O3, ZrO2 and TiO2 nanoparticles into glass–ionomer cements (GICs). Two different GICs were used in the study. Four groups were prepared for each material: the control group (without nanoparticles) and three groups modified by the incorporation of nanoparticles at 2, 5 or 10 wt %, respectively. Cements were mixed and placed in moulds (4 mm × 6 mm); after setting, the samples were stored in saline (one day and one week). Compressive strengths were measured and the morphology of the fractured surfaces was analyzed by scanning electron microscopy. The elements released into the storage solutions were determined by Inductively coupled plasma-optical emission spectrometry (ICP-OES). Addition of nanoparticles was found to alter the appearance of cements as examined by scanning electron microscopy. Compressive strength increased with the addition of ZrO2 and especially TiO2 nanoparticles, whereas the addition of Al2O3 nanoparticles generally weakened the cements. The ion release profile of the modified cements was the same in all cases. The addition of Al2O3, ZrO2 and TiO2 nanoparticles into GICs is beneficial, since it leads to reduction of the microscopic voids in the set cement. Of these, the use of ZrO2 and TiO2 nanoparticles also led to increased compressive strength. Nanoparticles did not release detectable levels of ions (Al, Zr or Ti), which makes them suitable for clinical use.

Item Type: Article
Uncontrolled Keywords: glass-ionomer cements, nanoparticles, titanium dioxide, zirconium oxide, aluminium oxide
Subjects: Q Science > Q Science (General)
Faculty / Department / Research Group: Faculty of Engineering & Science
Faculty of Engineering & Science > School of Science (SCI)
Last Modified: 16 Jan 2020 12:20
Selected for GREAT 2016: None
Selected for GREAT 2017: None
Selected for GREAT 2018: None
Selected for GREAT 2019: None
URI: http://gala.gre.ac.uk/id/eprint/26549

Actions (login required)

View Item View Item

Downloads

Downloads per month over past year

View more statistics