periodontic vs periodontal

periodontic and periodontal both are adjectives.

Word	Noun	Adjective	Verb	Adverb
periodontic	No	Yes	No	No
periodontal	No	Yes	No	No

As adjectives, periodontic and periodontal are synonyms defined as:

periodontic and periodontal: of or relating to or involving or practicing periodontics

periodontic (adjective)	periodontal (adjective)
of or relating to or involving or practicing periodontics	of or relating to or involving or practicing periodontics