An orthodontic relapse refers to a patient whose teeth have shifted out of their ideal position after completing orthodontic treatment.
Failure to consistently wear retainers after orthodontic treatment can cause an orthodontic relapse.
So it can be said then, that consistently wearing retainers can prevent the occurrence of orthodontic relapse.
Orthodontic relapses are often good candidates for clear aligner treatment. The patients are already comfortable with the idea of orthodontic treatment, and the teeth are usually close enough to ideal that the patient can be easily treated.