Does baking soda whitens teeth

Baking soda can help remove some surface stain through mild abrasion, but it does not bleach the deeper colour of teeth.

Baking soda is sodium bicarbonate, a fine alkaline powder. Brushing with it can disturb deposits on the outer enamel surface, while peroxide whitening changes stain molecules within enamel and dentin.

Use a fluoride toothpaste for routine brushing and avoid aggressive scrubbing or abrasive mixtures. A dental cleaning can remove hardened calculus, while peroxide treatment or restorative care may be considered for deeper discolouration after an examination.

Arrange dental care for bleeding gums, sensitivity, cavities, enamel wear, or a single tooth that has darkened. Stop home abrasion if the gum becomes sore or the teeth become more sensitive.

Ask whether the colour is surface stain, internal discolouration, decay, trauma, or a restoration. Ask which cleaning or whitening method preserves enamel and how fillings or crowns will affect the final shade.