Does teeth whitening harm enamel
Dental whitening acts on stain molecules, but irritation and sensitivity depend on the peroxide, exposure, tray fit, and the condition of the teeth.
The short answer
Enamel is the mineralized outer covering of a tooth. Peroxide passes through enamel to react with stain molecules; problems are more likely when whitening is misused, the gel contacts gums, or teeth already have decay, cracks, erosion, or exposed dentine.
What is the direct answer?
What does this question mean?
Have the teeth and gums checked before whitening and use the instructed amount in a well-fitting tray. Stop and seek advice if pain persists, gums turn white or sore, or a tooth reacts sharply to temperature.
What can you do next?
Do not whiten over untreated decay, active gum disease, or unexplained sensitivity. A dentist can identify the cause of darkening and distinguish natural tooth colour from stains or restorations.
When should you seek dental care?
What product and exposure time fit my enamel and gum condition? Are there cracks, erosion, cavities, or restorations that should be treated first?
Frequently asked questions
Why are my gums sore after whitening?
Gel may have contacted the gum or the tissue may be irritated; stop use and have the tray and teeth checked.
When should I arrange an examination?
Arrange an examination when symptoms persist, worsen, or interfere with eating, sleeping, cleaning, or normal function.