Effect of insertion method on knoop hardness of high viscous glass ionomer cements

Raggio, D. P. ORCID: https://orcid.org/0000-0002-0048-2068, Bonifacio, C. C., Bonecker, M., Imparato, J. C. P., de Gee, A. J. and van Amerongen, W. E. 2010. Effect of insertion method on knoop hardness of high viscous glass ionomer cements. Brazilian Dental Journal 21 (5) , pp. 439-445. 10.1590/S0103-64402010000500011

PDF - Published Version Available under License Creative Commons Attribution. Download (83kB)

Abstract

The aim of this study was to assess the Knoop hardness of three high viscous glass ionomer cements: G1 - Ketac Molar; G2 - Ketac Molar Easymix (3M ESPE) and G3 - Magic Glass ART (Vigodent). As a parallel goal, three different methods for insertion of Ketac Molar Easymix were tested: G4 - conventional spatula; G5 - commercial syringe (Centrix) and G6 - low-cost syringe. Ten specimens of each group were prepared and the Knoop hardness was determined 5 times on each specimen with a HM-124 hardness machine (25 g/30 s dwell time) after 24 h, 1 and 2 weeks. During the entire test period, the specimens were stored in liquid paraffin at 37ºC. Significant differences were found between G3 and G1/G2 (two-way ANOVA and Tukey's post hoc test; p<0.01). There was no significant difference in the results among the multiple ways of insertion. The glass ionomer cement Magic Glass ART showed the lowest hardness, while the insertion technique had no significant influence on hardness.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Dentistry
Publisher:	Fundação Odontológica de Ribeirão Preto
ISSN:	0103-6440
Date of First Compliant Deposit:	29 June 2022
Last Modified:	11 May 2023 03:50
URI:	https://orca.cardiff.ac.uk/id/eprint/148776

Citation Data

Cited 9 times in Scopus. View in Scopus. Powered By Scopus® Data

Actions (repository staff only)

Edit Item