Clear aligners are custom-made removable appliances used to gradually align the teeth. Suitability is assessed according to the type of case.
How does it work?
A series of aligners prepared with digital planning aims for planned, gradual tooth movement. Aligners are renewed at set intervals; use and follow-up are as instructed by the dentist.
Use and care
Points to note in general:
- Wearing the aligners for the time recommended by the dentist
- Removing them when eating and drinking (except water)
- Regular cleaning of the aligners and teeth
Who may it be considered for?
It may be suitable for certain crowding and alignment problems. Complex cases may require other methods. Suitability is determined by examination.
Frequently asked questions
How many hours a day are aligners worn?
The wear time is set by the dentist; regular use affects the outcome.
How are aligners cleaned?
They are cleaned gently using the methods the dentist recommends, avoiding very hot water.
Do they affect speech?
There may be a short adjustment period at first; most people adapt quickly.
Daily wear with clear aligners
With aligner treatment, predictability depends on wearing the trays for the recommended number of hours each day. They are removed for meals and coloured drinks, and the teeth are brushed before the aligners go back in. When wear time falls short, planned movements can be delayed and treatment extended.
- Consistent daily wear for the recommended hours
- Brushing after meals before reinserting
- Cleaning trays with lukewarm — never hot — water
- Storing them in their case
Which cases suit aligners?
Mild to moderate crowding, closing spaces and some bite corrections can be treated with aligners. Cases requiring complex movements may be more predictable with fixed appliances, and this is decided after examination and records.
After treatment
Retention is required after aligner treatment as well. Wearing the retainer as advised aims to reduce the tendency for teeth to drift back towards their earlier positions.
Frequently asked questions
Do aligners affect speech?
Slight changes to some sounds can occur in the first days and usually settle quickly.
What if an aligner is lost?
Your dentist may advise returning to the previous tray until a replacement is available; let the clinic know promptly.
For background read what is orthodontic treatment and see our orthodontics page. Further reading: World Health Organization oral health resources.
This article is for general information only and does not replace an examination, diagnosis or treatment by a dentist.