Safe whitening
Whitening depends on the peroxide product, contact time, tooth condition and gum protection, so examination comes first.
The short answer
Whitening risks depend on the peroxide product, concentration, contact time, tooth condition and gum protection, so treatment should follow an oral examination.
What is the direct answer?
What does this question mean?
Use whitening only after checking for decay, cracks, gum recession and exposed dentine. Follow the specified gel amount and contact time, protect the gums, and stop if marked sensitivity or soft-tissue irritation develops.
What can you do next?
Dental whitening uses peroxide to break down stain molecules within enamel and dentine. It does not change the colour of fillings, crowns, veneers or other restorations.
When should you seek dental care?
A dentist checks for decay, cracks, gum recession, exposed dentine and existing restorations before choosing a tray, gel or in-office method. Follow the prescribed amount and contact time, and stop if pain or gum irritation develops. Seek dental care before whitening if you have untreated decay, spontaneous tooth pain, ulcerated gums or unexplained sensitivity. Arrange review for persistent sensitivity, chemical burns or uneven colour after treatment.
What should you ask the dentist?
Ask which stains can respond, whether restorations will match afterward, how gum protection will be provided, what sensitivity plan is available, and which product and exposure time are intended.
Frequently asked questions
Can whitening fix a grey tooth?
A grey tooth may have internal discoloration or pulp damage and needs diagnosis before any whitening plan is chosen.
Why do gums hurt during whitening?
Gel may have contacted the gum, or the tissue may already be inflamed or thin from recession.