Surface roughness of glass ionomer cements indicated for atraumatic restorative treatment (ART)

Abstract

The purpose of this study was to evaluate the surface roughness of four conventional chemically cured glass ionomer cements (Fuji IX, Ketac Molar, Vidrion R and Vitromolar) commonly used in atraumatic restorative treatment (ART) immediately after material preparation. Twenty specimens of each glass ionomer cement were fabricated and surface roughness was measured after material setting. The specimens were further examined under scanning electron microscopy. Data were analyzed statistically by Kruskal-Wallis test and Mann-Whitney test at 5% significance level. Two-by-two comparisons showed statistically significant difference (p<0.05) between all materials, except for Ketac Molar and Vidrion R, which had statically similar results (p>0.05). Regarding their results of surface roughness, the materials can be presented in a crescent order, as follows: Ketac Molar < Vidrion R < Fuji IX < Vitromolar. In conclusion, from the tested glass ionomer cements, Fuji IX, Ketac Molar and Vidrion R presented acceptable surface roughness after setting reaction while Vitromolar showed remarkably higher surface roughness.

Mechanical Strength and Wear of Dental Glass-Ionomer and Resin Composites Affected by Porosity and Chemical Composition

“…Roughness peaks concentrate stresses that can promote cracks initiation and consequently facture of the material [25,26]. Thus, roughness can be affected by fillers content; fillers hardness; conversion degree of the resin matrix; filler/matrix interaction; and stability of silane coupling agent [21,[25][26][27]. The addition of nanofillers provides lower roughness values and consequently polishing [21].…”

Effect of storage time and chlorhexidine addition on the mechanical properties of glass ionomer cements

“…This procedure is considered of low cost, easy handling and high applicability [1][2][3][5][6][7] , which causes minimal discomfort to the patient by eliminating the need for local anesthesia 2,3,5 . The World Health Organization (WHO) recognized ART in 1994 as a new approach for dental treatment in regions economically less favored 8 .…”

“…The World Health Organization (WHO) recognized ART in 1994 as a new approach for dental treatment in regions economically less favored 8 . It has been stated in the minimum intervention philosophy for several reasons, such as the maintenance of healthy tooth structure, early intervention in the progression of caries lesions 3,7 , preservation of decayed teeth without endodontic involvement, promotion of oral health education concomitant with the restorative treatment 9 . ART has contributed to the management of pediatric patients behavior mainly in the cases of non-cooperative patients and patients with special needs 3 .…”

“…ART has contributed to the management of pediatric patients behavior mainly in the cases of non-cooperative patients and patients with special needs 3 . The use of GICs for ART approach is due to their intrinsic properties, such as adhesion to the dental structure, biocompatibility, coefficient of thermal expansion similar to tooth structure and fluoride release 1,[3][4][5]7,10 .…”

<b>Influência da aplicação tópica de géis de flúor na rugosidade superficial de cimentos de ionômero</b>

“…Portanto, as características superficiais de restaurações com o cimento de ionômero de vidro são particularmente importantes, uma vez que superfícies rugosas podem promover uma colonização bacteriana mais rápida. Assim, afetando as propriedades anticariogênicas e os princípios condizentes a este material restaurador (8).…”