What Are Retainers and Why Are They Necessary?
Retainers are appliances that prevent your teeth from relapsing into their original, pre-treatment positions. They can either be bonded or removable, and how long you wear them often depends on the severity of your original orthodontic malocclusions. Retainers are a vital part of the continuing maintenance of your teeth and bite health and alignment.
Without retainers, your teeth would slowly shift back and you would have similar orthodontic issues to the ones you had prior to any treatment. With retainers, your teeth, jaw and gums have more time to adjust and stabilize in the new alignments.