Hismile before and after real
Before-and-after whitening images can show a change in tooth shade, but results vary with the starting stain, product use, lighting, photographs, and whet.
The short answer
Before-and-after whitening images can show a change in tooth shade, but results vary with the starting stain, product use, lighting, photographs, and whether restorations are present.
How does whitening affect stains and dental restorations?
Whitening products use peroxide or other chemistry to alter some stains in natural enamel and dentine; they do not whiten porcelain or composite restorations.
How can you judge whitening results more reliably?
Check the ingredient and instructions, photograph teeth in consistent lighting, and have discoloured teeth or restorations assessed before judging the result.
When should uneven whitening or pain be checked?
See a dentist for pain, one dark tooth, gum burns, uneven colour, or little change after correct use, since the underlying cause may need treatment.
What should you ask about your expected whitening shade?
Ask whether the product matches your type of discolouration, what result is realistic for your enamel, and how existing fillings or crowns will affect the final shade.
Frequently asked questions
Why can my result differ from online photos?
Lighting, camera settings, dehydration, starting shade, application technique, and editing can all change how a shade appears.
Will whitening change my fillings?
No. Restorative materials keep their colour, so a later replacement may be discussed if the tooth and restoration no longer match.
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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.