The lab will come up with a desired amount of trays and send the specifications to the doctor and they will make any modifications they deem necessary, then email the changes to the factory. Once these changes, if any, have been implemented, the lab will 3D print the aligners and send them to the doctor so you can begin your treatment. learn more about in this video
The process of receiving your Invisalign aligners usually takes around four weeks. It takes such a long time because after the doctor has taken impressions of your teeth, they must send it to the Invisalign lab along with notes about how the treatment should progress.