Can peroxide and baking soda whiten teeth
Peroxide can lighten some stains, while baking soda mainly removes surface deposits through mild abrasion; a homemade mixture can irritate tissues.
The short answer
Peroxide can oxidize stain molecules, but baking soda does not bleach the inner tooth. An improvised mixture may be too concentrated or abrasive and can irritate gums, increase sensitivity, or wear enamel when misused.
Which tooth surfaces can whitening products actually change?
Whitening affects natural enamel and dentin, not the color of fillings, crowns, veneers, or bridges. Brown, grey, or one-sided discoloration may reflect decay, trauma, or a medication effect rather than removable surface stain.
What should you do instead of using a homemade paste?
Do not scrub with a homemade paste or apply peroxide to damaged gums. Have the cause of discoloration checked and use only a product and instructions selected for your teeth.
When should you stop whitening and seek dental care?
Stop and seek care if burning, ulceration, marked sensitivity, or pain develops. A dark tooth, cavity, or bleeding gum needs examination before cosmetic treatment.
Which whitening option is suitable for my teeth?
Ask whether the stain is on the surface or within the tooth, what restorations will not change color, and which professionally supervised option fits your mouth.
Frequently asked questions
What determines the treatment choice?
Peroxide can oxidize stain molecules, but baking soda does not bleach the inner tooth. An improvised mixture may be too concentrated or abrasive and can irritate gums, increase sensitivity, or wear enamel when misused. The examination determines the appropriate next step.
Can symptoms be managed without treating the cause?
Temporary care may reduce irritation, but persistent or recurring symptoms need diagnosis and treatment of their cause.
Keep reading
Who wrote this page
This library is published by Dental Nation, a licensed dental group practising in the United Arab Emirates. Pages are written and overseen by the same clinical team that treats patients in our clinics, and are held to a fixed editorial standard for safety and accuracy.
This page is patient education, not medical advice, and cannot replace an examination. Anything urgent — facial swelling, trauma, uncontrolled bleeding or severe pain — needs a dentist or emergency care now.