Esteves, Renata Antunes2025-03-312025-03-312018BALLA, Mariana Vieira. Avaliação da alteração de cor e rugosidade superficial de resinas bulk fill após escovação mecânica e envelhecimento. 2018. Dissertação (Mestrado em Clínica Odontológica) - Centro Universitário do Estado do Pará, Belém, 2018.https://repositorio.cesupa.br/handle/123456789/729The objective of this study was to evaluate, in vitro, the color stability (ΔE) and the surface roughness (Ra) of bulk fill (Filtek Bulk Fill e Tetric N-Ceram Bulk fill) and conventional (Filtek Z350XT e Filtek Bulk fill) composites, after mechanical brushing and aging. Specimens were made (n=5), with rounded bipartite matrix (8mm diameter x 4mm thickness). They were evaluated for color change (Spectrophotometer, Color Guide, BYK Gardner) and surface roughness (PROSCAN 2100 3D optical profilometer; Scantron), initially and after the tests. They were divided into 3 groups according to the tests: A-brushing (14,600 cycles, mechanical brushing machine, Elquip); B-thermocycling (5,000 cycles, 5-55°C, 30 seconds, Thermocycler, New Ethics-Scientific Equipment S.A.); C- thermocycling followed by brushing (same protocol). After all evaluations, the means were calculated and compared by means of analysis of variance (ANOVA) and Tukey's test. The level of significance was 5%. It was concluded that all resins were influenced by brushing and thermocycling. But the resin that suffered the most changes in color and roughness after mechanical brushing and thermocycling was Tetric N-Ceram Bulk fill resin.Acesso AbertoAttribution-NonCommercial-NoDerivs 3.0 Brazilhttp://creativecommons.org/licenses/by-nc-nd/3.0/br/Resinas compostasMateriais dentáriosEscovação dentáriaRugosidade de superfícieCIENCIAS DA SAUDEDissertação