Baking soda is the “kitchen ingredient dentists wish you knew about” because, used correctly, it can gently polish away surface stains, neutralize acids, and support a whiter, healthier smile—without the high cost of many whitening kits. It is not a magic cure for deep discoloration or cavities, but it is a science‑backed, budget‑friendly booster for your daily oral‑care routine.
What makes baking soda so good for your teeth?
Baking soda (sodium bicarbonate) has three properties dentists value:
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Mild abrasiveness: Finely ground particles gently scrub away surface stains from coffee, tea, and food without scratching enamel when properly diluted.
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Alkali power: It raises pH in the mouth, neutralizing acids produced by plaque bacteria and acidic drinks that erode enamel.
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Deodorising effect: By reducing acidity and some odor‑causing compounds, it helps freshen breath.
Several toothpastes on the market use baking soda as a primary ingredient because clinical studies show these formulas can remove extrinsic stains more effectively than non‑baking‑soda pastes, with similar safety when used as directed.
Step‑by‑step: how to safely use baking soda for brighter teeth
1. Simple baking‑soda brushing paste
Ingredients
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1 teaspoon baking soda
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1–2 teaspoons water
Method
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Mix into a soft paste in a small dish.
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Dip a soft‑bristled toothbrush into the paste.
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Gently brush teeth for about 1 minute, using small circles.
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Spit thoroughly and rinse with water.
How often: 1–2 times per week, not every day, to avoid over‑abrading enamel, especially if you already use a whitening toothpaste.
