Human primary teeth model with root canal. For separate print crown and root parts.
One piece type with root canal:
https://www.cgtrader.com/3d-print-models/science/biology/primary-teeth-anatomy-model
A skull partner with this:
https://www.cgtrader.com/3d-print-models/science/biology/human-child-skull-anatomy-model-no-teeth
Solid teeth with base data:
https://www.cgtrader.com/3d-print-models/science/biology/pediatric-dental-model-with-individual-teeth