Wearing clear aligners successfully mostly comes down to three habits: keeping them in for about 20 to 22 hours a day, taking them out to eat and drink anything other than plain water, and keeping both your teeth and your aligners clean. Get those right and day-to-day life with aligners is usually quite manageable. This guide covers the practical side, from meals and cleaning to travel, discomfort and what happens when treatment ends.
At North Ryde Dentistry we offer three clear aligner systems: Invisalign, Spark and Angel Aligner. Compare them on our clear aligners page or in Angel Aligner vs Invisalign.
Why wear time matters so much
Clear aligners move teeth by applying small, controlled forces. Each set is designed to move teeth a short distance over one to two weeks before you change to the next. Those forces only work while the aligners are in your mouth.
Most aligner systems are planned around 20 to 22 hours of wear a day. That leaves roughly two to four hours for meals, snacks, drinks and cleaning. If aligners are left out for long periods, teeth may not move as planned, the next set may not fit properly, and treatment can take longer or need extra adjustment aligners (sometimes called refinements).
Tips for keeping up wear time
- Put your aligners back in straight after eating and cleaning, rather than leaving them out “for a bit”.
- Group snacks with meals instead of grazing through the day.
- Set a phone reminder or use the tracking feature in your aligner app if your system has one.
- Always carry your case so you’re never tempted to wrap aligners in a napkin (a common way they get thrown out).
Eating and drinking with clear aligners
One of the advantages of removable aligners is that you don’t need to avoid particular foods the way you would with fixed braces. The trade-off is that you do need to take them out every time you eat.
The basic routine
- Remove your aligners and put them in their case.
- Eat your meal or snack.
- Brush your teeth (or at least rinse well with water if you can’t brush).
- Rinse your aligners and put them back in.
What about drinks?
Plain water is fine with aligners in. Other drinks are a different matter. Sugary or acidic drinks such as soft drink, juice, sports drinks and sweetened coffee can get trapped under the plastic and sit against your teeth, which increases the risk of decay and erosion. Tea, coffee and red wine can also stain aligners and attachments. Hot drinks may distort the plastic. The simplest habit is to take aligners out for anything other than water, or to drink it quickly with them out and rinse before putting them back.
Chewing gum and snacking
Don’t chew gum with aligners in, as it sticks to the plastic. Frequent snacking means more time with aligners out and more cleaning, so many people find they naturally snack less during treatment.
Cleaning your teeth and your aligners
Because aligners cover your teeth closely, anything left on the teeth gets held there. Good hygiene protects you from decay, gum inflammation and bad breath during treatment.
Your teeth
- Brush twice a day with fluoride toothpaste, and ideally after meals before putting aligners back in.
- Clean between your teeth once a day with floss or interdental brushes.
- Pay attention to the gum line and around any attachments (small tooth-coloured bumps bonded to some teeth to help the aligners grip).
Your aligners
- Rinse them in cool or lukewarm water whenever you take them out.
- Brush them gently once or twice a day with a soft toothbrush. Some people use a little unscented clear soap; many toothpastes are abrasive and can scratch the plastic, making it look cloudy.
- Never use hot or boiling water, which can warp the plastic and change the fit.
- Use only cleaning products your dentist or the aligner manufacturer recommends.
- Keep them in their case when not in your mouth, and away from pets, who are often attracted to them.
What wearing clear aligners feels like
Pressure and tenderness
It is normal for teeth to feel tight or tender for a day or two after starting a new set. This usually means the aligners are doing their job. Some people change to a new set at night so the first few hours of pressure happen while they sleep. Over-the-counter pain relief, used as directed on the packet, can help if needed.
Speech
Many people notice a slight lisp in the first few days. This usually fades quickly as your tongue gets used to the aligners. Reading aloud or talking more than usual can help speed this up.
Rough edges
An edge occasionally rubs the tongue or cheek. Orthodontic wax can help temporarily, and your dentist can smooth a sharp edge if it persists.
Seating the aligners
Aligners need to sit fully on the teeth. Some systems use small soft “chewies” that you bite on for a few minutes to help seat the trays. Small gaps between the aligner and the tip of a tooth can mean the tooth isn’t tracking, which is worth mentioning at your next review.
Everyday life: work, sport, travel and social events
- Work and study: aligners are discreet, and most people around you won’t notice them. Keep a travel toothbrush, small toothpaste and your case in your bag.
- Sport: for contact sport, speak to your dentist about mouthguard options during treatment.
- Travel: pack your current and next set, plus your previous set as a back-up in case one is lost or broken.
- Eating out: it is fine to remove aligners discreetly at the table and pop them in their case; just make sure you brush or rinse before putting them back.
- Lost or broken aligner: call your dentist. Often you will be advised to go back to your previous set or move to the next one, but don’t guess without checking.
Limitations and risks to be aware of
Clear aligners suit many adults and teenagers, but not every bite. More complex tooth movements may be better suited to fixed braces, and some cases are referred to a specialist orthodontist. Possible issues include tooth tenderness, decay or gum inflammation if hygiene slips, attachments coming off, slower progress if wear time is low, and the need for refinement aligners. Root shortening (resorption) can occur with any orthodontic treatment, although it is usually minor. And without retainers, teeth tend to drift back towards their old positions.
Suitability depends on an assessment, which looks at your teeth, gums, bite and goals. At North Ryde Dentistry, our dentist in Macquarie Park team matches the aligner system to the patient, with options including Invisalign, Spark and Angel Aligner, and the practice is an Invisalign Platinum Elite Provider. Our orthodontics and Invisalign page explains the treatment process in more detail. Invisalign treatment ranges from $4,200 to $8,990 depending on complexity, with the fee confirmed after assessment.
After treatment: retainers
Once the active phase finishes, you will need retainers to hold your teeth in their new positions. Teeth naturally tend to move throughout life, so retainer wear is usually long term, often full-time at first and then at night. Think of it as part of the treatment rather than an optional extra.
When to see a dentist
Contact your dentist during aligner treatment if an aligner cracks, is lost or no longer fits, if an attachment falls off, if a tooth becomes very sore or the pain doesn’t settle after a few days, or if you notice bleeding gums, a sore spot on a tooth or signs of decay. Keep your scheduled reviews so progress can be checked and problems caught early.
Frequently asked questions
How many hours a day do I need to wear clear aligners?
Most systems are planned around 20 to 22 hours a day. That leaves about two to four hours for meals, drinks and cleaning. Less wear time can slow progress or affect how well the next set fits.
Can I drink coffee with my aligners in?
It’s better to take them out. Coffee can stain aligners and attachments, hot drinks can warp the plastic, and sugar trapped under the aligner increases the risk of decay. Plain water is fine with aligners in.
Do clear aligners hurt?
Most people feel pressure or tenderness for a day or two after starting each new set. This usually settles quickly. If pain is severe or doesn’t settle after a few days, contact your dentist.
How do I clean my aligners?
Rinse them in cool or lukewarm water whenever you remove them and brush them gently with a soft toothbrush once or twice a day. Avoid hot water and abrasive toothpaste, which can warp or scratch them.
Do I need to wear a retainer after clear aligners?
Yes. Teeth tend to move back towards their old positions without a retainer, so retainer wear is usually long term, often full-time at first and then at night.
If you are thinking about clear aligners and would like to know whether they suit your teeth, we’re happy to talk it through. Call North Ryde Dentistry on (02) 8090 1102 or book an appointment.
This article is general information only and is not a substitute for advice from your own dentist. Any treatment carries risks; your dentist will discuss whether it is suitable for you.
Related at North Ryde Dentistry: our North Ryde dental clinic