How Do Clear Aligners Work? A Complete Guide

Clear aligners have become a favourite option for adults and teens in Riyadh: nearly invisible, removable and wire-free. But how do thin plastic trays actually move teeth?

How teeth move

Teeth are held in the bone by elastic ligaments. Gentle, continuous pressure in one direction makes the bone remodel — resorbing on the pressure side and forming on the other — so the tooth moves slowly. All orthodontics works on this principle.

The role of each aligner

Each tray is designed to be slightly different from your current tooth position. Wearing it applies gentle pressure until the teeth settle into its shape; then you move to the next tray. The whole series is a slow "film" of your teeth moving to the planned result.

Digital planning

Impressions or a 3D scan are used to build a step-by-step movement plan. You can see a preview of the expected result before starting. Small tooth-coloured attachments are often placed on some teeth to help the aligners grip and guide movement.

Stages

1. Consultation and assessment.
2. Treating decay or gum inflammation first.
3. Scan and planning.
4. Receiving aligners and instructions.
5. Changing trays and follow-up visits.
6. A retainer to keep the result.

The secret: 20–22 hours a day

Aligners only work in your mouth. Remove them only to eat, drink anything other than water and clean. Wearing them too little is the most common reason for delays.

Daily tips

• Brush before putting the aligners back after meals.
• Clean them with a soft brush and lukewarm — never hot — water.
• Do not drink coffee, tea or sugary drinks with aligners in.
• Always keep the case with you.

Suitable cases

Mild to moderate crowding, gaps, some bite problems and relapse after earlier braces. Very complex cases may need fixed braces or an orthodontist, and we tell you clearly from the start.

Light pressure for a day or two with each new tray is normal and shows the aligner is working. Book a consultation to see if you are a candidate.