Produção Nacional
Revisado por pares
Influence of Resin Cements on Color Stability of Different Ceramic Systems
2017; Fundação Odontológica de Ribeirão Preto; Volume: 28; Issue: 2 Linguagem: Inglês
10.1590/0103-644020170
ISSN1806-4760
AutoresRenata Borges Rodrigues, Erick de Lima, Marina Guimarães Roscoe, Carlos José Soares, Paulo Francısco Cesar, Veridiana Resende Novais,
Tópico(s)Recycling and utilization of industrial and municipal waste in materials production
ResumoThe purpose of this study was to evaluate color stability of two dental ceramics cemented with two resin cements, assessing the color difference (ΔE00) by the measurement of L*, a*, b*, c* and h* of transmittance. The combination of two ceramic system (feldspathic and lithium disilicate) and two resin cements - color A3 (RelyX ARC and Variolink II) resulted in 4 groups (n=5). Ten disks-shaped specimens were fabricated for each ceramic system (10x1.5 mm), etched with hydrofluoric acid (10%) and silanized prior to cementation. The color analysis was performed 24 h after cementation of the samples and after 6 months of storage in relative humidity by means of spectrophotometry. The ΔE00 values were analyzed statistically by two-way ANOVA followed by the Tukey test (p<0.05). One-way ANOVA were calculated for the means of individual color coordinates (L*, a*, b*, c* and h*). Two-way ANOVA showed that only the ceramic factor was significant (p=0.003), but there was no difference for the cement factor (p=0.275) nor for the ceramic/cement interaction (p=0.161). The feldspathic ceramic showed the highest values of ΔE00. Variations in L*, a*, b*, c* and h* were more significant for feldspathic ceramic. In conclusion, storage alters similarly the optical properties of the resin cements and feldspathic porcelain was more susceptible to cement color change after aging.
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