Effect of Color and Surface Roughness of Glass Ionomer Cements Submitted to Solutions Based on Ilex paraguariensis

Abstract

of and of cements submitted to based ˚ ABSTRACT: The present study analyzed the color change (DE) and surface roughness (Ra) of glass ionomer cements (GICs) subjected to typical herbaceous South American beverage action - Ilex paraguariensis . 90 specimens (n = 10) were made: M1 - GIC Riva Light Cure¤ (SDI); M2 — GIC Riva Self Cure¤ (SDI); M3 - GIC Vitremer¤ (3M ESPE). After light curing/ polymerization of GICs, specimens were divided for being submitted to solutions for one hour a day for 21 days: S1 — Yerba Mate Pajarito Traditional (Pajarito); S2 — Erva Mate Chimarr(cid:139)o (Bar(cid:139)o de Cotegipe); S3 — Water (control). Four DE and Ra readings were taken: T0 — initial; T1 — 7 days; T2 — 14 days and T3 — 21 days, with a spectrophotometer and a roughness meter respectively. The obtained data were submitted to ANOVA statistical analysis and Bonferroni. S1 and S2 at T1 and T2 there was no statistical difference between the materials, and at T3 Materials M1=M2, M1=M3, and M2>M3. For S3 at T1, T2 and T3 there was no difference between the materials. Analyzing surface roughness, there was no statistical significance. Concluded that all materials changed color with greater influence of time, but without changing surface roughness.