Automated creation of tooth restoration dental appliances

A system comprising:

• one or more processors configured to obtain a digital three-dimensional (3D) model of a future dental anatomy of a patient, the future dental anatomy representing an intended shape of at least one tooth of the patient;
• a landmark identifier configured to automatically compute, based on the digital 3D model of the future dental anatomy of the patient, one or more landmarks of the future dental anatomy of the patient, wherein the landmark identifier is configured to identify a plurality of slices of the dental anatomy;
• a custom feature generator configured to automatically generate, based on the one or more landmarks, one or more custom appliance features for a dental appliance for restoring the at least one tooth of the patient wherein the custom appliance feature is a mold parting surface and the custom feature generator is configured to generate the mold parting surface by at least being configured to:
• generate a 3D mesh by accumulating a plurality of points for each respective slice of a plurality of slices of the dental anatomy;
• and
• determine, based on the 3D mesh, the mold parting surface;
• a memory device configured to store a digital model of the dental appliance, the digital model of the dental appliance including at least one of the one or more custom appliance features or one or more pre-defined appliance features;
• and
• an interface configured to output instructions that cause a manufacturing system to 3D print the dental appliance based on the digital model generated by the custom feature generator.