Thank you, im glad that you found it useful. Especially given your experience around the industry.
The base anatomy comes from BodyParts3D, an open anatomical dataset from DBCLS which is openly licensed under CC BY-SA 2.1 Japan.
The tooth internals were modeled to fit the actual teeth so it’s a mix of open anatomical data, processing, and additional modeling.
The 3D models you see are rendered in a javascript framework called three.js, an awesome framework if I may say.
Thank you again for the kind words!