Living with clear aligners: eating, cleaning and care

Clear aligners are easy to live with once you know the handful of daily habits that keep them working and looking invisible. Most of the questions people ask, how long to wear them, whether you can eat, how to clean them, come down to protecting two things: your wear time and the trays themselves. Here is the simple daily routine.

Wear them 20 to 22 hours a day

This is the rule everything else supports. Aligners only move teeth while they are on, so the target is 20 to 22 hours daily, leaving roughly two to four hours for meals and cleaning. Worn less than about 20 hours, the teeth stop keeping up with the trays, and treatment either stalls or drags on. If you struggle to keep them in, that is worth an honest conversation with your dentist, and it is one reason some people are better suited to braces.

Eating and drinking

Take your aligners out to eat, every time. Chewing with them in can crack or distort them, and food pushed against the trays is hard to clean out. With them in, stick to plain water only. Hot drinks can warp the plastic, coloured drinks like tea, coffee and cola stain them, and sugary or acidic drinks get trapped against your teeth under the tray, which is a fast route to decay. Out to eat, water only when they are in, that is the whole rule.

The "30-minute rule", explained

You will see the "30-minute rule" mentioned a lot. It is simply a way to guard your wear time: keep the aligners out for no more than about 30 to 60 minutes at a stretch, such as for a meal, then put them straight back. Because your whole daily allowance of out time is only two to four hours, a couple of long, unplanned breaks quickly cost you the 22 hours the teeth need. Short meals, prompt returns.

Cleaning your aligners and your teeth

Rinse the aligners whenever you take them out, and once a day give them a gentle clean with a soft brush and a little mild soap or a dedicated aligner cleaner. Avoid coloured toothpaste, which is abrasive and scratches the surface, and never use hot water, which warps them. Just as important, brush your teeth before putting the aligners back in, because sealing food and plaque under a tray for hours invites decay. Keeping up your usual professional cleans during treatment helps too.

New trays, mild soreness and staying comfortable

A little tightness or tenderness for a day or two after changing to a new aligner is normal, it means the teeth are moving. Changing trays at night gives the soreness time to settle while you sleep. If a tray ever feels sharp or does not seat properly, or if discomfort is more than mild, let your dentist know rather than forcing it.

Do not forget the retainer at the end

Finishing the aligners is not quite the finish line. Teeth naturally drift back, so a retainer afterwards is essential to hold your new smile, exactly as it is after braces. Our guide to retainers after treatment explains the types and how long to wear them. If you are still deciding whether aligners suit you at all, our post on whether clear aligners really work is the place to start.

Sources & further reading

American Dental Association (MouthHealthy) · NHS, Dental Health · NIDCR, US National Institute of Dental & Craniofacial Research · Indian Dental Association