650—28.8 (153) Periodontics.
	 28.8(1) Definition. Periodontics is that specialty of dentistry which encompasses the prevention, diagnosis and treatment of diseases of the supporting and surrounding tissues of the teeth or their substitutes; and the maintenance of the health, function, and esthetics of these structures and tissues.
	 28.8(2) Requirements.
	  a.   	 Be a diplomate of the American Board of Periodontology; or
	  b.   	 Have successfully completed a formal graduate or residency training program in periodontics accredited by the Commission on Dental Accreditation of the American Dental Association; or
	  c.   	 Have limited practice to this area prior to January 1, 1965, and have been permitted to continue to do so pursuant to resolution of the ADA House of Delegates.