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Ion release by endodontic grade glass-ionomer cement

Ion release by endodontic grade glass-ionomer cement

Czarnecka, Beata, Limanowska-Shaw, Honorata, Hatton, Richard and Nicholson, John W. (2007) Ion release by endodontic grade glass-ionomer cement. Journal of Materials Science: Materials in Medicine, 18 (4). pp. 649-652. ISSN 0957-4530 (Print), 1573-4838 (Online) (doi:10.1007/s10856-007-2315-3)

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Abstract

Cylindrical specimens (6 mm high x 4 mm diameter) of the endodontic grade glass-ionomer (Ketac Endo) were exposed to various media for 1 week, after which changes in their mass, pH of storage medium, and ion release were determined. In water, this cement was shown to release reasonable amounts of sodium, aluminium and silicon, together with smaller amounts of calcium and phosphorus, as well as taking up 2.41% by mass of water. A comparison with the restorative grade materials (Ketac Molar, ex 3M ESPE and Fuji IX, ex GC) showed both ion release and water uptake to be greater. All three cements shifted pH from 7 to around 6 with no significant differences between them. Other storage media were found to alter the pattern of ion release. Lactic acid caused an increase, whereas both saturated calcium hydroxide and 0.6% sodium hypochlorite, caused decreases. This suppression of ion-release may be significant clinically. Aluminium is the most potentially hazardous of the ions involved but amounts released were low compared with levels previously reported to show biological damage.

Item Type: Article
Uncontrolled Keywords: fluoride release, dental cements, differentiation, osteoblasts, invitro, ph
Subjects: R Medicine > RK Dentistry
Q Science > QD Chemistry
Faculty / Department / Research Group: Faculty of Engineering & Science > Department of Pharmaceutical, Chemical & Environmental Sciences
Related URLs:
Last Modified: 09 Dec 2016 15:26
Selected for GREAT 2016: None
Selected for GREAT 2017: None
Selected for GREAT 2018: None
URI: http://gala.gre.ac.uk/id/eprint/2500

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