Orthodontic treatment can help to address many kinds of dental problems. Some are fairly simple, like straightening crooked teeth. Filling gaps and correcting an overbite are common issues that can be successfully addressed by Invisalign. The time needed to complete treatment typically involves several months. Finally, when the braces come over, patients want to know what to expect. Is the problem fixed forever? Will future treatment be necessary? What happens after the Invisalign treatment is completed?