dental orthopaedics vs dental orthopedics

dental orthopaedics and dental orthopedics both are nouns.

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

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

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

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

dental orthopaedics (noun)	dental orthopedics (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