How to whiten teeth using bicarbonate of soda

Bicarbonate of soda is a mildly abrasive alkaline powder that can lift some external deposits, but it does not bleach the internal colour of a tooth.

Bicarbonate of soda is a mildly abrasive alkaline powder that can lift some external deposits, but it does not bleach the internal colour of a tooth.

Rubbing loose powder on enamel can vary the abrasive dose and technique, while whitening toothpastes combine abrasives with a controlled formula and fluoride. Neither approach changes the colour of fillings, crowns, or veneers, and deeper stains may need a different diagnosis.

Rubbing loose powder on enamel can vary the abrasive dose and technique, while whitening toothpastes combine abrasives with a controlled formula and fluoride. Neither approach changes the colour of fillings, crowns, or veneers, and deeper stains may need a different diagnosis.

Brush twice daily with a soft brush and fluoride toothpaste, using gentle pressure, and choose a tested whitening toothpaste if appropriate for you. Do not mix powder with acids or scrub aggressively, especially over exposed roots or worn enamel.

Brush twice daily with a soft brush and fluoride toothpaste, using gentle pressure, and choose a tested whitening toothpaste if appropriate for you. Do not mix powder with acids or scrub aggressively, especially over exposed roots or worn enamel.

See a dentist for a dark single tooth, persistent sensitivity, enamel wear, cavities, or stains that remain after routine cleaning. These signs can indicate a problem that powder cannot correct.

See a dentist for a dark single tooth, persistent sensitivity, enamel wear, cavities, or stains that remain after routine cleaning. These signs can indicate a problem that powder cannot correct.

Bicarbonate of soda can help remove some surface deposits when used in a formulated toothpaste, but loose powder is not a complete or controlled whitening treatment.