Extraction of wisdom teeth is not really needed for Invisalign to work. They are too far back to have an effect on tooth movment.
Do You Have to Have Your Wisdom Teeth out Before Geting Invisalign?
Doctor Answers 2
Wisdom tooth extraction for Invisalign
Wisdom teeth removal prior to invisalign treatment
Not necessarily. Only if they may interfere with the fit of the aligners which is normally not the case.