Whitening Comes First
What whitening gel does and doesn't do to composite and porcelain, why there's a pause between the two treatments, what to do about fillings and bonding you already have, and how long the full plan runs.
Should I Whiten My Teeth Before Composite Bonding or Veneers?
Yes, if you'd like lighter teeth. Composite and porcelain keep the shade they're made in, so whitening afterwards lightens only your natural teeth and leaves the bonding looking darker. Whiten at home for two to three weeks, allow around a fortnight for the colour to settle, and then have the bonding or veneers matched. At our Lanark practice whitening comes with every bonding package, or costs £350 by itself.
Gel Won't Lighten Composite or Porcelain
Whitening works only on natural teeth. The gel travels into enamel and dentine, where it breaks apart the stain held there. Composite resin and porcelain don't respond to it at all. On the day a tooth is bonded, the composite shade is picked to blend with the teeth beside it, and that shade is permanent.
Now imagine doing it the other way round. Your front four teeth are bonded, and a year later you whiten. Your canines and side teeth lighten but the four bonded teeth don't, so they now look darker than the rest, and the only remedy is to redo them at £395 per tooth. Whitening first avoids that entirely: your own teeth reach the shade you're after and the composite is made to match.
The Reason for a Two-Week Pause
After whitening, two things need time. The first is colour. Straight after a course, teeth look their lightest, partly because they're slightly dehydrated, and they darken a little as they take up moisture again over the next few days. Composite matched on day one would end up a touch too white.
The second is adhesion. For a while after whitening, oxygen lingers in the enamel and weakens the grip of the bonding adhesive. Around a fortnight lets it clear so the bonding holds properly. Treat two weeks as a guide: if your shade is still changing or your teeth feel sensitive, a few extra days cost nothing. We recheck the shade at the start of your bonding appointment before any composite is placed.
Having More Than One Treatment?
A smile design consultation sets everything in the right order and puts it in a single written plan.
How the Plan Usually Runs
| Step | What's involved | Time |
|---|---|---|
| Consultation | Examination of teeth and gums, photographs, a scan for your trays and a written plan | One appointment |
| Whitening | Boutique gel worn in trays at home each day | Two to three weeks |
| Settling | The shade steadies and the enamel recovers | Around two weeks |
| Bonding or veneers | Edge bonding often takes one visit, composite veneers up to two, and porcelain three over roughly a month | Depends on the treatment |
| Review | Bite check and final polish | Around two weeks later |
When whitening and bonding are done together, allow six to eight weeks from your first night of whitening to the final polish, so if you're working towards a wedding or another date, count back about two months. The consultation itself is free; a £20 deposit is taken when you book and refunded within 7 days of your visit.
How We Carry Out the Whitening
We use Boutique home whitening. First, a dentist examines your teeth for decay, cracks or gum problems that need treatment, and notes any fillings or crowns that won't change colour. Instead of impression putty, we take an iTero scan, and your trays are made from that. When you collect them, we check the fit, show you how to load the gel, explain how long to wear the trays each day and record your starting shade.
Home whitening by itself is £350, or £315 for plan members, and it comes with every bonding and Invisalign package. 1 A little temporary sensitivity is normal. Under UK rules, whitening must be prescribed by a dentist, and gels stronger than 0.1% hydrogen peroxide can't be used for cosmetic whitening in anyone under 18. We also don't whiten during pregnancy or while breastfeeding. You'll find more on the whitening page.
Whitening Within a Larger Plan
- Straighten first, where needed. Invisalign brings teeth into line, so bonding can be thinner or unnecessary. Whitening and Vivera retainers are already part of our Invisalign packages.
- Then whiten. The shade you finish on becomes the target for everything afterwards.
- Then bond or veneer. Composite or porcelain, matched to the new colour.
- Wear retainers overnight. They keep moved teeth in place and protect bonded edges.
When you need more than one treatment, the dentist planning your treatment brings it together as one smile makeover. That way nothing is bonded or veneered until your teeth are in their final position and final colour, and no stage undoes an earlier one.
Existing Fillings, Crowns and Bonding
None of these lighten with whitening. Once your natural teeth are brighter, a white filling or older crown on a front tooth can look darker than those around it. At your dental examination we record each restoration and tell you which are likely to stand out, so you can decide whether to have them replaced once whitening is done. Fillings in back teeth that don't show can usually stay as they are.
One common situation is a set of composite veneers that has yellowed. Whitening the natural teeth and then replacing the veneers to suit the new shade solves both problems in a single sequence.
If You've Had Bonding Before
Whitening is still possible; you just need to allow for updating the bonding afterwards so it matches. For one or two teeth that's quick, at £395 a tooth. If the bonding covers six or more teeth, a new package is often better value, and it already includes whitening.
This is also the right time to take a frank look at the old bonding. If it's stained, has needed several repairs or never matched well, replacing it after whitening usually beats patching it up. Our bonding care guide lists the signs that it's due.
Questions
This guide is general information, not a diagnosis. A dentist needs to examine you to say what is right for your teeth.