Orthodontics
Clear aligners (Invisalign)
Clear, removable trays that gently move teeth a little at a time.
Type
Removable trays
Wear time
Most of the day
Visibility
Hard to notice
Suits
Mild to moderate cases
Overview
Clear aligners are a series of thin, see-through trays made to fit your teeth. You wear each set for a set period, then change to the next, and your teeth move in small steps.
They are removable, so you take them out to eat and clean your teeth. Good results depend on wearing them as long as advised each day, usually most of the day and night.
What to know
- Removable, clear trays worn most of the day
- Swapped for a new set every week or two
- Take them out to eat, drink and brush
- Best for mild to moderate alignment problems
- Results rely on wearing them as advised
Common questions
How many hours a day must I wear them?
Often around 20 to 22 hours, taking them out mainly to eat and clean.
Can people tell I am wearing them?
They are clear and usually hard to notice in normal conversation.
Can aligners fix any problem?
No. Complex bite problems may still need braces or other treatment.
What if I lose a tray?
Tell your dentist. You may go back a set or move to the next one.
Do I still need a retainer after?
Yes, to help stop your teeth drifting back.
Having this treatment?
See your step-by-step journey →
Related topics
Why orthodontics?
Straightening teeth can improve how your bite works, looks and stays clean.
Retainers
Retainers hold your teeth in place after braces or aligners.
Crowded & crooked teeth
When teeth overlap or twist because there is not enough room in the jaw.
Risks of direct-to-consumer aligners
Mail-order aligners skip in-person checks, which can lead to real problems.
Dr Rick Iskandar · Reviewed June 2026