The purpose of this research was to determine the cleaning and whitening ability of two charcoal containing toothpastes compared with baking soda, activated charcoal and a hydrogen peroxide containing whitening toothpaste. Tea-stained enamel/dentin slices were mounted dentin side down in cylinders of auto-polymerizing acrylic and subjected to simulated brushing. Total color, ∆E, and stained area were measured using a reflectance spectrophotometer and ImageJ software using a Hue, Chroma, and Brightness color threshold method; respectively, at prescribed brushing intervals of baseline, months 1, 6 and 12. A two- way repeated measure analysis of variance was performed, with included factors being toothpaste group and time. Statistical analysis revealed the included factor of brushing time interval was significant (p<0.05) for both ∆E and stained area. There was significant interaction for both main effects (p<0.05) for the dependent variable of stained area alone. Significant reduction in ∆E values occurred in all groups except Optic White at the 1-month interval. Statistically significant reduction in stained area occurred at 1-month for the baking soda group only. Post-hoc Tukey HSD tests revealed there was significant group*time interaction for baking soda at month 1 for the variable stained area. The charcoal containing (Crest 3D with Charcoal and Colgate Essentials) and non-charcoal containing toothpastes (Optic White) only produced a significant stain removal at the 6-month interval.
KEY WORDS: charcoal containing toothpastes, human enamel, stain removal.
How to cite this article
MARCHAN, S. M.; BASCOMBE, K. & SMITH, W. A. J. The cleaning and whitening ability of charcoal containing toothpastes and homeopathic remedies on human tooth enamel. Int. J. Odontostomat., 16(3):435-4440, 2022.