tooth doctor vs dental practitioner

tooth doctor and dental practitioner both are nouns.

Word	Noun	Adjective	Verb	Adverb
tooth doctor	Yes	No	No	No
dental practitioner	Yes	No	No	No

As nouns, tooth doctor and dental practitioner are synonyms defined as:

tooth doctor and dental practitioner: a person qualified to practice dentistry

Other synonyms of tooth doctor include dentist.

tooth doctor (noun)	dental practitioner (noun)
a person qualified to practice dentistry	a person qualified to practice dentistry