dental practitioner vs tooth doctor

dental practitioner and tooth doctor both are nouns.

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

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

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

Other synonyms of dental practitioner include dentist.

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