Evaluation of the relationship between the cost and properties of glass ionomer cements indicated for atraumatic restorative treatment

Calvo, Ana Flavia Bissoto, Kicuti, Ariane, Tedesco, Tamara Kerber, Braga, Mariana Minatel and Raggio, Daniela Procida ORCID: https://orcid.org/0000-0002-0048-2068 2016. Evaluation of the relationship between the cost and properties of glass ionomer cements indicated for atraumatic restorative treatment. Brazilian Oral Research 10.1590/1807-3107BOR-2016.vol30.0008

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Abstract

The aim of this study was to evaluate microshear bond strength (μSBS), water sorption and solubility of glass ionomer cements (GIC) indicated for atraumatic restorative treatment (ART). Cylindrical specimens (6x2.4 mm) were used to test the sorption and solubility of each GIC (n = 5). The specimens were weighed before and after immersion in water and desiccation. For the μSBS test, 60 primary molars were ground to obtain flat surfaces from both enamel and dentin. The teeth were then assigned to the tested GIC (n = 10) groups, namely Fuji IX - FIX, Ketac Molar - KM and Maxxion R – MX. The exposed surfaces were pre-treated with GIC liquid. Polyethylene tubes were placed on the pre-treated surface and filled with one of the GIC. After 24 h, the specimens were submitted to the μSBS test. The failure mode was assessed using a stereomicroscope (400x magnification). The powder to liquid ratio and cost of material were also determined (n = 3). The data were analyzed by ANOVA and Tukey's post hoc test. Linear regression was used to determine the relation between cost and the other variables. Overall, MX showed lower μSBS values (enamel: 3.93 ± 0.38; dentin: 5.04 ± 0.70) than FIX (enamel: 5.95 ± 0.85; dentin: 7.01 ± 1.06) and KM (enamel: 5.91 ± 0.78; dentin: 6.88 ± 1.35), as well as higher sorption and solubility. The regression analyses showed a significant and positive correlation between cost and μSBS in enamel (R2 = 0.62; p < 0.001) and dentin (R2 = 0.43; p < 0.001); and a negative correlation between cost and water sorption (R2 = 0.93; p < 0.001) and solubility (R2 = 0.79; p < 0.001). In conclusion, the materials indicated for ART exhibit distinct physical and mechanical properties; in addition, low-priced materials may interfere with GIC properties.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Schools > Dentistry
Additional Information:	This is an Open Access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Date of First Compliant Deposit:	22 June 2022
Date of Acceptance:	27 May 2015
Last Modified:	19 May 2023 13:04
URI:	https://orca.cardiff.ac.uk/id/eprint/148767

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