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Estabilidade cromática de resinas dentárias obtidas por impressão 3D após imersão em diferentes agentes pigmentantes
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Objetivos: O objetivo deste estudo in vitro foi avaliar a estabilidade cromática de três resinas fotopolimerizáveis impressas em 3D após imersão em diferentes agentes pigmentantes.
Materiais e métodos: Foram impressos 25 discos (10 x 1,5 mm) de cada resina de impressão 3D: V-Print C&B Temp (VOCO, Cuxhaven, Alemanha), VarseoSmile Crown Plus (BEGO, Bremen, Alemanha) e Voxelprint (FGM, Joinville, Brasil). As amostras foram distribuídas por cinco grupos de imersão (n= 5): água destilada, café, chá, Coca-Cola e Red Bull. Os discos foram submetidos a ciclos de imersão de 5 min, duas vezes por dia, durante 30 dias. A medição da cor foi avaliada com o colorímetro digital OptiShade Style Italiano™ em três momentos: antes da imersão, após 7 dias e 30 dias. Os dados CIE Lab* foram utilizados para cálculo do ΔE e convertidos em unidades NBS. O nível de significância estatística foi fixado em 5 %.
Resultados: Os valores de ΔE variaram entre 0,69 ± 0,35, na resina VarseoSmile Crown Plus após 7 dias em Red Bull, e 14,11 ± 2,25, na resina Voxelprint após 30 dias em café. O tipo de resina, a solução de imersão e o tempo influenciaram a alteração cromática. Após 7 dias, as maiores alterações ocorreram sobretudo em café e Coca-Cola. Após 30 dias, observou-se aumento da alteração cromática em vários grupos, sendo o café responsável pelo valor mais elevado de ΔE, particularmente na resina Voxelprint.
Conclusões: A estabilidade cromática das resinas impressas em 3D foi influenciada pelo material, pela solução pigmentante e pelo tempo de exposição.
As resinas apresentaram comportamentos cromáticos distintos, o que sublinha a importância da escolha do material em função da duração prevista da utilização clínica e dos hábitos alimentares do paciente.
Objectives: The aim of this in vitro study was to evaluate the color stability of three 3D-printed light-curing resins following immersion in different stimulating beverages. Materials and methods: Twenty-five discs (10 × 1.5 mm) were printed from each 3D printing resin: V-Print C&B Temp (VOCO, Cuxhaven, Germany), VarseoSmile Crown Plus (BEGO, Bremen, Germany) and Voxelprint (FGM, Joinville, Brazil). The samples were divided into five immersion groups (n = 5): distilled water, coffee, tea, Coca-Cola and Red Bull. The discs were subjected to 5-minute immersion cycles, twice daily, for 30 days. Color measurement was assessed using the OptiShade Style Italiano™ digital colorimeter at three time points: before immersion, after 7 days and after 30 days. CIE Lab* data was used to calculate ΔE and converted into NBS units. The level of statistical significance was set at 5%. Results: ΔE values ranged from 0.69 ± 0.35 for VarseoSmile Crown Plus resin after 7 days in Red Bull, to 14.11 ± 2.25 for Voxelprint resin after 30 days in coffee. The type of resin, the immersion solution and the duration influenced the color change. After 7 days, the greatest changes occurred mainly in coffee and Coca-Cola. After 30 days, an increase in color change was observed in several groups, with coffee accounting for the highest ΔE value, particularly in the Voxelprint resin. Conclusions: The color stability of 3D-printed resins was influenced by the material, the staining solution and the exposure time. The resins exhibited distinct color behaviours, which highlights the importance of selecting the material based on the expected duration of clinical use and the patient’s dietary habits.
Objectives: The aim of this in vitro study was to evaluate the color stability of three 3D-printed light-curing resins following immersion in different stimulating beverages. Materials and methods: Twenty-five discs (10 × 1.5 mm) were printed from each 3D printing resin: V-Print C&B Temp (VOCO, Cuxhaven, Germany), VarseoSmile Crown Plus (BEGO, Bremen, Germany) and Voxelprint (FGM, Joinville, Brazil). The samples were divided into five immersion groups (n = 5): distilled water, coffee, tea, Coca-Cola and Red Bull. The discs were subjected to 5-minute immersion cycles, twice daily, for 30 days. Color measurement was assessed using the OptiShade Style Italiano™ digital colorimeter at three time points: before immersion, after 7 days and after 30 days. CIE Lab* data was used to calculate ΔE and converted into NBS units. The level of statistical significance was set at 5%. Results: ΔE values ranged from 0.69 ± 0.35 for VarseoSmile Crown Plus resin after 7 days in Red Bull, to 14.11 ± 2.25 for Voxelprint resin after 30 days in coffee. The type of resin, the immersion solution and the duration influenced the color change. After 7 days, the greatest changes occurred mainly in coffee and Coca-Cola. After 30 days, an increase in color change was observed in several groups, with coffee accounting for the highest ΔE value, particularly in the Voxelprint resin. Conclusions: The color stability of 3D-printed resins was influenced by the material, the staining solution and the exposure time. The resins exhibited distinct color behaviours, which highlights the importance of selecting the material based on the expected duration of clinical use and the patient’s dietary habits.
Descrição
Dissertação para obtenção do grau de Mestre no Instituto Universitário Egas Moniz
Palavras-chave
Impressão 3D Fabrico aditivo Resina dentária Estabilidade de cor