What is the failure rate of Invisalign?

Invisalign is highly effective when used in the right cases and worn as directed, but like any treatment, it isn’t perfect.

Prospective and practice‑based studies suggest that the average accuracy, or “success,” of individual tooth movements with clear aligners is around 50–80%, with higher rates in mild-to-moderate cases and lower rates in very complex movements.

Overall, malocclusion correction and patient satisfaction are comparable to those with braces, though fixed appliances still outperform aligners for some movements, such as certain rotations, torque, and vertical changes.

“Failure” in Invisalign usually means needing extra aligners (refinements), switching to braces for part of the treatment, or not achieving the originally planned result.