Correction of Orthodontic relapse with Invisalign. We saw a patient today from the Bahamas who received Orthodontic treatment when younger but failed to use retainers to maintain her teeth. This resulted in their teeth moving back and becoming crooked again. Now there is a simple solution to this problem without the need to return to traditional braces with metal brackets and wires. Now straighter teeth can be achieved with Invisalgn. Invisalign is a series of clear aligners worn regularly. Slowly but surely crooked teeth are straightened.