Final answer:
An Endodontist specializes in the prevention, diagnosis, and treatment of the dental pulp and the tissues that surround the root of the tooth.
Step-by-step explanation:
The dentist who specializes in the prevention, diagnosis, and treatment of the dental pulp and the tissues that surround the root of the tooth is called an Endodontist. They are experts in performing root canal treatments and treating conditions related to the dental pulp.