Whitening effectiveness of three commercial dentifrices for the removal of extrinsic dental stains. in vitro study, Lima-2020

Abstract

Objective: This in vitro study determined the effectiveness of three commercial whitening toothpastes in removing extrinsic dental stains. Materials and Methods: Thirty human premolars were sectioned mesio-distally to obtain two segments, resulting in 60 enamel surfaces, which were divided into four groups (G1, G2, G3, G4). G1 served as the negative control group using conventional fluoride toothpaste, while G2 used Colgate® Luminous White, G3 used Oral-B 3D White Perfection, and G4 used Sensodyne Whitening. All samples were immersed in black tea for seven days. Color changes in the samples were measured using a Vita Easyshade® 4.0 digital spectrophotometer after black tea staining and after brushing on the first, seventh, and fourteenth days. Results: The four groups were compared over three time points, with significant differences observed only at T3 (p > 0.05). At this stage, only two toothpastes proved effective: Oral-B 3D White Perfection (6.82 ± 5.61) and Colgate Luminous White (5.53 ± 5.03). Conclusions: It was concluded that only two whitening toothpastes, Oral-B 3D White Perfection and Colgate Luminous White, are effective in removing extrinsic dental stains.

Objetivo: El presente estudio in vitro determinó la efectividad del clareamiento de tres dentífricos comerciales para la eliminación de manchas dentales extrínsecas. Materiales y método: Se utilizaron 30 dientes premolares humanos y se procedió a realizar un corte en sentido mesio-distal con el objetivo de obtener dos segmentos. En total, se obtuvieron 60 superficies de esmalte humano que fueron separadas en 4 grupos (G1, G2, G3, G4). Siendo G1, el grupo de control negativo = dentífrico fluorado convencional, G2 = Colgate® Luminous White, G3 = Oral-B 3D White Perfection y G4 = Sensodyne Blanqueador. Todas las muestras fueron sumergidas en té negro durante 7 días. Los cambios de color de las muestras se midieron con un espectrofotómetro digital Vita Easyshade® 4.0, post tinción de té negro, al primer, séptimo y décimo cuarto día de cepillado. Resultados: Se compararon los cuatro grupos en los tres tiempos y sólo se observó diferencia significativa (p > 0.05) en el T3; donde solo dos de los dentífricos fueron efectivos: Oral-B 3D White Perfection (6.82 ± 5.61) y Colgate Lumious White (5.53 ± 5.03). Conclusiones: Se concluyó que solo dos dentífricos clareadores presentan efectividad para la eliminación de manchas extrínsecas, Oral-B 3D White Perfection y Colgate Lumious White.