dental orthopedics vs orthodonture

dental orthopedics and orthodonture both are nouns.

Word	Noun	Adjective	Verb	Adverb
dental orthopedics	Yes	No	No	No
orthodonture	Yes	No	No	No

As nouns, dental orthopedics and orthodonture are synonyms defined as:

dental orthopedics and orthodonture: the branch of dentistry dealing with the prevention or correction of irregularities of the teeth

Other synonyms of dental orthopedics include dental orthopaedics, orthodontia, orthodontics.

dental orthopedics (noun)	orthodonture (noun)
the branch of dentistry dealing with the prevention or correction of irregularities of the teeth	the branch of dentistry dealing with the prevention or correction of irregularities of the teeth