Have your once straight teeth begun to drift out of position? If so, then you may be thinking of finding that old retainer of yours in an attempt to address orthodontic relapse. However, this likely isn’t the best idea for the look or function of your smile. Keep reading to learn why you shouldn’t use an old retainer to straighten your teeth, what to do if you do experience orthodontic relapse, and why you should consider Invisalign!