Invisalign treatment usually requires a year or less for adults and more time for teenagers. Invisalign works best and most effectively with patients that consistently wear their aligners for the recommended 20 to 22 hours daily. At the end of the process, your dentist removes the aligner attachments and documents the final results. The type of retainer necessary to maintain the benefits of your Invisalign treatment will have been discussed ahead of time (also “invisible” and probably only required for when you sleep) and you will receive your retainer at this final appointment. You walk out of our Sacramento dental offices with an incredibly improved smile!