Professional whitening before and after
Professional whitening lightens natural tooth colour, while the visible result depends on stain type, tooth structure, and treatment plan.
The short answer
Professional whitening lightens natural tooth colour, while the visible result depends on stain type, tooth structure, and treatment plan. It does not change the colour of fillings, crowns, veneers, or other restorations.

What is the direct answer?
What does this question mean?
Before-and-after photographs compare shade under particular lighting, camera settings, and tooth dryness. A clinical result is judged against the starting shade and the condition of the natural teeth, not against a guaranteed image.
What can you do next?
The dentist first checks for decay, gum inflammation, exposed dentine, and existing restorations, then records a starting shade. Whitening gel is applied according to the chosen system, with protection for the gums and instructions for aftercare.
When should you seek dental care?
Have an examination before whitening if teeth are painful, cracked, heavily restored, or sensitive, or if the gums bleed. Contact the treating clinic for persistent sensitivity, gum irritation, or an uneven colour change.
What should you ask the dentist?
Ask which stains are likely to respond, whether restorations will remain visible, and whether existing decay or sensitivity changes the plan. Ask how the shade will be recorded and what can affect the result afterward.
Frequently asked questions
Why do before-and-after shades vary?
Lighting, tooth dehydration, camera settings, starting shade, and stain type can all change how the comparison looks.
Can whitening fix one dark tooth?
A single dark tooth may have internal staining or pulp damage and needs diagnosis before a whitening method is selected.
