Invisalign uses clear aligners to straighten teeth discreetly. Most people complete treatment within 12–18 months. The duration depends on case complexity, age, and how consistently aligners are worn.
Invisalign is a clear orthodontic system designed to move teeth gently. The aligners are removable, comfortable, and replaced every one to two weeks. They straighten teeth gradually until the final position is reached.
Average Invisalign Treatment Time
- Most treatments: 12–18 months
- Mild cases: 6–9 months
- Complex cases: 18+ months
- Early improvements: within weeks
Can You Get Invisalign on the NHS?
Factors That Affect Invisalign Treatment Time
- Case complexity
- Mild crowding or gaps: 6–9 months
- Moderate or severe issues: 12–24 months
- Age
- Teeth may move faster in teens
- Compliance
- Aligners must be worn 22 hours per day
- Oral hygiene
- Healthy teeth move more predictably
- Aligner care
- Damage or loss can delay progress
What Are Invisalign Aligners?
The Invisalign Process (Step-by-Step)
- Consultation
A clinician examines your teeth and confirms suitability. Digital scans map tooth movement. - Receiving Aligners
You receive several sets. Each is worn for 1–2 weeks. - Regular Check-Ups
Visits every 4–6 weeks ensure proper progress and allow new aligners to be issued.
Benefits of Invisalign
- Clear appearance
- Removable for eating and brushing
- Comfortable plastic design
- Easy oral hygiene
- No food restrictions
How Much Does Invisalign Cost?
How to Shorten Invisalign Treatment Time
- Wear aligners 22 hours daily
- Follow the change schedule
- Maintain brushing and flossing
- Avoid heat and damage
- Store aligners safely
How to Clean Invisalign Aligners
- Rinse after removal
- Brush gently with mild soap
- Avoid toothpaste
- Use approved cleaning solutions if recommended
- Keep away from hot water
How to Clean Invisalign Retainers?
Invisalign vs Traditional Braces
Traditional braces may take 1–3 years or more. Invisalign uses trays that shift teeth together, often resulting in a shorter treatment time for mild to moderate cases.
FAQs
1. How long does Invisalign take?
Most people complete treatment in 12–18 months, with mild cases finishing sooner.
2. Is Invisalign faster than braces?
Often yes, especially for mild or moderate alignment issues.
3. Do I really need to wear aligners for 22 hours a day?
Yes. Wearing them less slows movement and extends treatment.
Is Invisalign Worth It?
4. Can I eat while wearing Invisalign?
No. Remove aligners before eating or drinking anything except water.
5. Does Invisalign hurt?
Mild pressure is normal during the first few days of each new aligner.
6. Is Invisalign available on the NHS?
Generally no. NHS orthodontics usually provides metal braces only.
Does Invisalign Hurt?
Author Details
Cove Dental and Implant Centre – Clinical Content Team
This article has been written and reviewed by the professional team at Cove Dental and Implant Centre. Our clinicians and oral care educators ensure all information is accurate, clear, and helpful for patients seeking trusted dental guidance.
Last Updated
28 November 2025
