dental medicine vs dentistry

dental medicine and dentistry both are nouns.

Word	Noun	Adjective	Verb	Adverb
dental medicine	Yes	No	No	No
dentistry	Yes	No	No	No

As nouns, dental medicine and dentistry are synonyms defined as:

dental medicine and dentistry: the branch of medicine dealing with the anatomy and development and diseases of the teeth

Other synonyms of dental medicine include odontology.

dental medicine (noun)	dentistry (noun)
the branch of medicine dealing with the anatomy and development and diseases of the teeth	the branch of medicine dealing with the anatomy and development and diseases of the teeth