Key takeaways
- Simple cases can finish in a few months; comprehensive cases often take 12–18 months.
- Wearing aligners 20–22 hours a day keeps you on schedule.
- Aligners are usually changed every 1–2 weeks.
- Retainers protect your result afterwards.
Typical timelines
- Minor spacing or crowding: often a few months.
- Moderate crowding or gaps: around 6–12 months.
- Bite correction and complex cases: often 12–18 months or more.
What keeps you on track
- Wearing aligners 20–22 hours every day.
- Changing aligners on schedule.
- Using attachments and elastics if prescribed.
- Attending check-ups so refinements are planned early.
What slows things down
Forgetting to wear aligners, losing a set, or skipping check-ups can add weeks or months. Tooth movement only happens while the aligners are in your mouth.
After treatment
Teeth naturally try to move back, so retainers are essential. Most people wear them nightly for the long term.
Frequently asked questions
Can Invisalign be faster than braces?
For some cases, yes. For others they're similar. Your orthodontist will estimate your timeline from your scan.
This article is for general information and doesn't replace a dental examination. Prices mentioned are starting prices at the time of writing.