Evaluation of Coffee Stain Removing Efficacy of Commercially Available Dentifrices Containing Natural Ingredients: An In Vitro Study

agents (e.g., blue covarine) are added to dentifrice, termed the "whitening toothpaste."Hydrogen peroxide or carbamide peroxide whitening agents, although providing good results, affect the oral mucosa and dental tissues adversely, giving rise to sensitivity of pulp tissue, cervical resorption, and altered enamel surface.Most of these localized outcomes depend on the concentration of the used products and worsen with repeated treatments. 2 IntroductIonTooth discoloration, a frequent complaint in dental practice, is usually caused by stains that can be extrinsic, intrinsic, or internalized.Extrinsic discoloration occurs on the surface of a tooth, where the substances in the pellicle produce stains due to their primary color or chemical reaction.Dietary intake of foods or drinks (tea, coffee, wines, and colas), tobacco use, and poor oral hygiene commonly lead to extrinsic stains, which are managed with oral prophylaxis, followed by polishing, bleaching, veneers, and at-home application of toothwhitening products. 1n ardent wish for white teeth has popularized the use of tooth-whitening products.Consumer expectations have led to their continuous development and a vast range of products and technologies.Most of these products function by bleaching the teeth or eliminating extrinsic stains.Tooth bleaching usually involves applying chemicals like hydrogen or carbamide peroxide gels to the teeth.They bleach the colored materials in the tooth and whiten the teeth.To optimize removing and controlling extrinsic stains, specific abrasives (e.g., hydrated silica, calcium carbonate, perlite), chemical agents (e.g.