Clear aligners · aftercare
Living with aligners, and then retainers
Aligners only move teeth while they are in, so they come out to eat and go straight back in after cleaning your teeth. Drink nothing but water with them in. At the end, retainers hold the result, and that part does not finish.
What does the daily routine look like?
- Wear them as instructed, which is most of the day and night. They only work while they are in.
- Out to eat, out to drink anything but water. Every time, without exceptions for a quick coffee.
- Clean your teeth before they go back in. Food trapped under a tray sits against the tooth for hours.
- Rinse the trays whenever they are out, and keep them in their case rather than a napkin. Trays wrapped in a napkin get thrown away, and it is the most common way one is lost.
- Take them out from the back teeth first, working forward, rather than pulling at the front.
- Change to the next tray on schedule, and if one does not seat properly, ring us instead of forcing it.
What is the one mistake that causes real damage?
Drinking anything sugary or acidic with the trays in. It is the single most common way aligner treatment goes wrong for someone who is otherwise doing everything right, and it is worth understanding rather than just being told.
Normally saliva washes sugar and acid off your teeth within minutes. A tray seals the liquid against the enamel and stops that happening, so a soft drink sipped over an hour with trays in is an hour of acid held against every tooth. That produces decay and white marks on teeth that were healthy when treatment started.
Water is fine. Everything else comes out first, and a rinse before the trays go back in costs nothing.
What is normal during treatment?
Normal: tightness and pressure for a day or so after each new tray, a slight lisp in the first week, a mild looseness in teeth that are actively moving, and trays that feel tight going in and easier by the end of their stage.
Ring us: sharp pain rather than pressure, a tray that will not seat after a couple of days, an attachment that has come off, a tray that is lost or cracked, an edge rubbing your tongue or cheek, or a tooth that feels properly loose rather than slightly mobile.
None of those are disasters. All of them are easier to fix in the week they happen than three trays later.
Why keep your check-ups going during treatment?
Review appointments check that teeth are moving to plan. They are not check-ups, and they do not replace them.
Teeth under active movement need the same examination and cleaning as always, and arguably more attention, because trays change how saliva reaches the teeth and crowded areas that are opening up can be harder to clean for a while. Bleeding gums during treatment are worth acting on rather than putting down to the aligners. Our check-up and clean page covers what one involves, and gum disease treatment explains why the bleeding matters.
Retainers: the part that does not finish
This is the most important section on the page, and it is the one people skim.
Teeth are held in bone that remodels throughout life, and they drift back towards where they started. That is not a failure of the treatment or a sign something went wrong. It is what teeth do, and it is why retainers exist.
Most people end up wearing a retainer at night, long term. Your dentist will tell you what yours should be and how often, and the honest framing is that it is a permanent habit rather than a final stage. People who stop are the ones who come back years later asking about aligners for the second time, and the second course costs what the first one did.
Principal dentist Dr Fatima Kurnaz, a general dentist rather than a registered specialist, reviews the clinical information on this page. If anything here differs from what you were told at your appointment, follow what you were told and ring us to check.
Other questions people ask
Can I drink coffee with my aligners in?
No, and this is the one worth taking seriously. Hot drinks can warp the trays, and anything other than water sits against your teeth under the plastic instead of being washed away. Take them out, drink, rinse, then put them back in.
How do I clean the trays?
Rinse them whenever they are out, and brush them gently with a soft brush and cool water. Not hot water, which distorts them, and not whitening or heavily abrasive toothpaste, which scratches the surface and makes them cloudy.
What if I lose a tray?
Ring us, and in the meantime go back to the previous tray rather than jumping forward to the next one. Skipping ahead in the sequence is how treatment goes off track, and the fix is usually simple if we hear early.
What if an attachment falls off?
It happens, and it is not an emergency, but it does need re-bonding because the tray relies on it to move that tooth. Ring us and keep wearing the trays in the meantime unless we tell you otherwise.
Do I have to wear retainers forever?
Effectively yes, and it is the most important sentence on this page. Teeth drift back towards their old positions throughout life. Most people move to wearing them at night long term. Stopping is the most common reason adults end up asking about aligners a second time.
My teeth feel loose. Is that normal?
A slight looseness during active treatment is expected, because teeth move through bone that is remodelling around them, and it settles as each movement finishes. A tooth that feels properly loose, or painful rather than tender, is worth ringing about.