How Long Does It Take For Teeth To Shift Without Retainer. If you stop wearing your retainer, your teeth may drift back to their original position. Retainers help prevent your teeth from shifting position after your orthodontic appliance (like braces) has been removed.
You can go from 15 to 20 days without wearing it. This could cause functional problems with your teeth as well as an unpleasant appearance. In reality, however, your teeth will not shift after a wisdom teeth removal.
Immediately after finishing active orthodontic treatment, your orthodontist will have you wear your retainer for at least 12 hours a night for the first two years.
You'll then reduce use, wearing the retainers every night. As long as you follow their instructions about wearing them they should not. You'll then reduce use, wearing the retainers every night. Most often, a retainer must be worn continuously for a period of 6 months or more following the removal of the aligners or braces.