Bamboo toothbrushes in a glass jar on a white surface

When you imagine a brighter smile, you probably think about the whole smile, not each tooth separately. Existing dental work makes that conversation more individual. If you have a crown, veneer or filling, mention it before you book and ask how it relates to the change you have in mind.

Does whitening change every part of a smile?

The NHS explains that whitening can only lighten natural teeth. It specifically highlights crowns, dentures and implants as reasons to discuss suitability. Do not assume that existing dental work will change shade alongside natural teeth.

If you have veneers or fillings, ask your dentist how their material, shade and position affect your options. A general guide cannot predict how a particular restoration will look in your finished smile.

Ask about the result you want

Explain whether you want a subtle change, have noticed a colour difference, or are simply exploring what is possible. Bring up dental work you can see when you smile, as well as any work you are less sure about.

Ask what would be realistic for the smile you have now. Before-and-after photographs of another person cannot answer that question, because their natural teeth and dental work may be different from yours.

Keep treatment decisions separate from an offer

A clear price helps you compare appointments, but it does not establish suitability. Ask your dentist whether whitening makes sense for your teeth before making a cosmetic decision based on a discount.

If a provider discusses other dental work, ask for an explanation of the options, costs and alternatives before agreeing. You can take time to consider those answers; wanting a brighter smile does not commit you to further treatment.

Prepare your booking questions

For ishSmile, the advertised appointment offer is £125, usually £175, at Brick Lane or Belsize Road. Ask the team about the appointment and selected venue; ask a dentist how your existing dental work affects suitability.

Read the London price guide and appointment guide, note anything you would like clarified, and confirm your selected location before travelling. A useful conversation should leave you with a clear next step, even if that step is to wait.

Sources & further reading

Written by the ishSmile editorial team as general reading, with independent sources linked below. These sources may describe dental treatments that differ from our product-guidance visit. Our team does not provide personalised dental advice or a clinical assessment.

Planning teeth whitening in London?

Compare the appointment price and what is included, then choose your London location. Ask a dentist about suitability before deciding on whitening.