Systems and methods include determining, by an appointment management system, a condition that an appointment to conduct an intraoral scan at an intraoral scanning site has been missed by a user, automatically generating a message to the user based on the condition that indicates that an at-home impression kit will be sent to the user, sending the automatically generated message to the user, sending the at-home impression kit to the user, receiving the at-home impression kit from the user, and producing, at a fabrication site, a plurality of aligners based on the received at-home impression kit where the plurality of aligners are specific to the user and are configured to reposition one or more teeth of the user in accordance with a treatment plan.