Water sorption and solubility of glass ionomer cements indicated for atraumatic restorative treatment considering the time and the pH of the storage solution

Renally Bezerra Wanderley e LIMA,Fábia Danielle Sales da Cunha Medeiros e SILVA,Ana Karina Maciel ANDRADE,Julyanna Filgueiras Gonçalves de FARIAS,Rosângela Marques DUARTE

doi:10.1590/1981-863720180001000043100

Renally Bezerra Wanderley e LIMA, Fábia Danielle Sales da Cunha Medeiros e SILVA + Show 3 more

Open Access

https://doi.org/10.1590/1981-863720180001000043100

Copy DOI

Abstract

ABSTRACT Objective: Evaluate the water sorption and the solubility of glass ionomer cements considering the time and the pH of the storage solution. Methods: The materials used in this survey study were the following ones: Ketac Molar Easymix, Maxxion R, Vitro Molar, Vitremer and Vitro Fil LC. Fifteen specimens of each material were fabricated and subdivided into the storage solutions (deionized water, acid artificial saliva and neutral artificial saliva), having the mass measured in 24 hours, 7, 14 and 21 days. Water sorption and solubility values (µg/mm3) were obtained and submitted to the analysis of variance (ANOVA) and the Tukey test (p <0.05). Results: The water sorption values were statistically different for all the studied materials and solutions in each storage period, except for the Maxxion R. Considering the solubility, all the glass ionomer cements presented values that were not statistically different when evaluating the storage solutions, except for the Vitro Fill LC. Conclusion: The water sorption and the solubility of the studied glass ionomer cements were not influenced by the various storage solutions.

Highlights

Atraumatic Restorative Treatment (ART), a technique developed in Tanzania in the mid 1980’s, as part of an oral care program, is of great importance, as it is a low-cost easy treatment option to assist the low-income population[1].Glass ionomer cements (GICs) are considered the most appropriate restorative material for ART due to their biological, physical and chemical properties.[1]
The water sorption and the solubility of the studied glass ionomer cements were not influenced by the various storage solutions
The results achieved in this research study showed that the Maxxion R glass ionomer cement (FGM) presented statistically higher water sorption values when compared to other cements in all the studied conditions, except for neutral saliva in the 24-hour period, in which the Maxxion R did not statistically differ from the Vitro Molar

Summary

Introduction

Atraumatic Restorative Treatment (ART), a technique developed in Tanzania in the mid 1980’s, as part of an oral care program, is of great importance, as it is a low-cost easy treatment option to assist the low-income population[1].Glass ionomer cements (GICs) are considered the most appropriate restorative material for ART due to their biological, physical and chemical properties.[1]. High viscosity GICs were specially developed to be used with this technique. These cements were manufactured by removing calcium ions excess from glass particles, reducing the particles size and increasing the powder to liquid ratio[5]. Such materials present a longer settling time and better physic-mechanical properties when compared to previous cements[1,6], resulting in higher survival rate of the restorations[7]

Methods

Results

Discussion

Conclusion