The human body changes throughout the course of its lifecycle, and while every orthodontic patient would love to think that their teeth will stay in place after they are done with treatment, this is sadly not the case. Teeth can shift out of place as the mouth continues to develop with age, and this can unfortunately undo much of the hard work of wearing Invisalign, braces, or another orthodontic appliance. Here’s why your teeth may have changed positions and what you can do to address the problem.