It typically takes about a week to get a replacement set of aligners made and sent to you. With Invisalign, this is too long of a period to go without wearing aligners. If this happens, we recommend you go back to the previous set while you wait for the replacement. When you get your replacement set of aligners, you’ll need to restart the planned period for that set and adjust your reminders for when to put in future aligners. For more information, please talk to your orthodontist.