How Clear Aligners Work: The Step-by-Step Process
Written & medically reviewed by Dr. Neha Johri, MDS — Orthodontics & Dentofacial Orthopedics · Last updated July 2026
Clear aligners work by applying gentle, precisely-planned pressure through a series of custom trays — each one moves your teeth a fraction of a millimetre until they reach their planned final position.
Clear aligners are a modern, discreet way to straighten teeth. Here is how they actually move your teeth and what the journey looks like.
How do clear aligners move teeth?
Each tray is shaped slightly differently from your current tooth position. Worn in sequence, they apply light, controlled forces that guide teeth into place over time — the same biology as braces, delivered through removable trays.
What is the step-by-step process?
- A digital 3D scan of your teeth
- A treatment plan and simulation of your final smile
- Your custom aligner series is made
- You wear each tray ~1–2 weeks, 20–22 hours a day
- Refinement trays fine-tune the result
- Retainers hold your new smile in place
How long does it take?
Most cases take 6–18 months. See braces vs clear aligners to compare options, and what determines the cost.
Caring for your aligners
- Wear them 20–22 hours a day
- Remove them to eat and to drink anything but water
- Rinse and brush them, and brush your teeth before reinserting
- Keep them in their case when not worn
Frequently asked questions
How often do I change aligner trays?
Typically every 1–2 weeks as directed. Your orthodontist sets the exact schedule based on your plan.
Do clear aligners hurt?
You may feel mild pressure for a day or two with each new tray — a sign they are working. It is generally more comfortable than braces.
Ready for a healthier, happier smile?
Book a consultation with Pune’s family-friendly dental team in Mohamadwadi. New patients and children are always welcome.