Snow whitening before and after
Before-and-after whitening photographs show a shade change, but lighting, dehydration, restorations, and stain type can alter the comparison.
The short answer
Before-and-after results from a branded whitening kit show how natural teeth may change shade, but photographs are not a reliable prediction for every patient.
What is the direct answer?
What does this question mean?
Whitening peroxide changes the colour of stain molecules within enamel and dentine. The visible result depends on whether discolouration comes from food and tobacco, ageing, trauma, medication, fluorosis, or a restoration.
What can you do next?
Compare teeth in the same light and avoid judging immediately after treatment, when dehydration can temporarily alter their appearance. A dental examination and shade record give a more useful baseline than an online photograph.
When should you seek dental care?
Arrange an examination when one tooth is grey or brown, the colour change follows an injury, or whitening leaves patches. A dentist should check decay, pulp changes, enamel defects, and restorations before further treatment.
What should you ask the dentist?
Ask what caused your discolouration, which shade change is realistic, and whether fillings or crowns will need replacement for a colour match. Ask how the shade will be recorded and which method will be supervised.
Frequently asked questions
Why do teeth look whiter just after treatment?
Temporary dehydration can make enamel look lighter until it rehydrates.
Will deep stains respond to a home kit?
Some internal stains respond incompletely, and the cause should be assessed before repeating treatment.