Teeth anatomy model

How are teeth models made?
Physical Impressions.
Digital dental models can be created either by scanning the patient directly with an intraoral scanner or using a desktop optical scanner to scan a traditional impression or model..
What are teeth models called?
In dentistry, a typodont is a model of the oral cavity, including teeth, gingiva, and the palate.
A typodont is an educational tool for dental and hygienist students, allowing them to safely practice certain dental procedures on the plastic teeth of a model before actually performing the procedures on live patients..
Dental models/casts are accurate, three-dimensional replicas of a patient's teeth that are made by pouring dental plaster or acrylic into impressions (imprints, or molds) of the teeth, and allowing it to harden.
The dental cast (dental mold or dental model) is the positive reproduction of a patient's teeth and surrounding tissues obtained from a dental impression (which is a negative imprint of teeth and soft tissues).

How are teeth models made?