Invisalign risks & complications
An honest look at what can go wrong with invisalign, how often, and how to protect yourself.
Every procedure carries risk. Most complications from invisalign are uncommon, minor, and resolve with conservative management — but informed consent means understanding the full picture before you decide.
Documented risks for invisalign
Relapse if retainers aren't worn
Universal — teeth want to move back
Root resorption (root shortening)
Some shortening in many cases; clinically significant in <5%
Tracking failure
10–20% of cases need refinement; aligners not following tooth movement
TMJ symptoms
Rare; usually pre-existing and revealed by orthodontic movement
Cavities under attachments
Higher if hygiene slips during treatment
How to reduce your personal risk
- Choose a board-certified, fellowship-trained surgeon.
- Stop nicotine in any form for at least 4 weeks pre/post-op.
- Disclose every medication and supplement to your surgical team.
- Follow pre-op fasting and post-op activity restrictions exactly.
- Keep follow-up appointments — early detection means easy fixes.
By the numbers
12–18 months
typical treatment time for moderate cases
22 hrs/day
minimum wear time for predictable results
Lifelong
retainer wear required
This page is general education, not medical advice. Risk estimates vary by patient factors, surgeon experience, and technique — discuss your specifics with a qualified surgeon.