Most Invisalign side effects are mild and expected. But a few specific signs are worth contacting your orthodontist about promptly, rather than waiting for your next scheduled check-up.
Mild pressure, a brief lisp with a new aligner, and slight discomfort for the first few days of a new set are all completely normal. A few specific signs, however, are worth contacting your clinic about rather than waiting for your next scheduled visit.
What's Normal
Signs Worth Contacting Your Orthodontist About
Why Tracking Issues Matter
If an aligner isn't tracking properly — sitting with a visible gap against one or more teeth — it means the actual movement is falling behind the ClinCheck-planned schedule. Left unaddressed, this can compound across future aligner sets. We can usually correct this quickly with a short 'reset' using a previous aligner or minor plan adjustment if caught early.