sending a dental impression kit to a patient at a location that is remote from an office of a dentist, an orthodontist, or other dental professional for the administration of the contents of the dental impression kit to form a plurality of dental impressions of the patient's teeth, the dental impression kit including a plurality of dental trays of different sizes, the plurality of dental trays consisting of a first set of two dental trays and a second set of two dental trays, wherein the first set of two dental trays have a first size and the second set of two dental trays have a second size, and wherein the dental impression kit further includes a base putty and a catalyst putty, the base putty and the catalyst putty being mixable to form a putty mixture that can be positioned in the dental trays for creating the plurality of dental impressions;

receiving the plurality of dental impressions created using dental trays selected by the patient from among the first set of two dental trays and the second set of two dental trays;

receiving, by an application server, images of a mouth of the patient captured by a user device of the patient and uploaded to the application server;

generating three-dimensional (3D) image data corresponding to one or more teeth of the patient, the 3D image data generated based on the plurality of dental impressions;

providing, by the application server, the 3D image data to a dental lab computing device of a dental lab capable of generating a treatment plan for moving the one or more teeth of the patient;

receiving, by the application server from the dental lab computing device, treatment plan data corresponding to the treatment plan including a plurality of 3D models, each 3D model of the plurality of 3D models corresponding to a respective step in a series of steps to reposition the one or more teeth of the patient in accordance with the treatment plan;

providing, by the application server to a provider computing device associated with a provider, the images of the mouth of the patient, an indication in an editable field of a first user interface of at least one size of the dental trays selected by the patient to generate the plurality of dental impressions, and the treatment plan data;

receiving, by the application server from the provider computing device, a communication that indicates the patient is fit for treatment and that the treatment plan is acceptable;

providing, by the application server, a second user interface on a user portal to the patient, the second user interface including a first user interface element enabling the patient to view a visualization of the treatment plan on the user portal and a second user interface element enabling the patient to purchase dental aligners based on the treatment plan;

receiving, by the application server, a selection of the second user interface element on the second user interface; and

manufacturing a plurality of dental aligners based on the treatment plan in response to determining that the patient purchased the plurality of dental aligners, the plurality of dental aligners being specific to the patient and being configured to reposition the one or more teeth of the patient.