Sec. 11. A person is deemed to be practicing dental hygiene within the meaning of this chapter who:
(1) uses the titles "Licensed Dental Hygienist", "Dental Hygienist", or the letters "L.D.H.", "R.D.H.", or "D.H." in connection with his or her name;
(2) holds himself or herself out to the public in any manner that he or she can or will render services as a dental hygienist;
(3) removes calcific deposits or accretions from the surfaces of human teeth or cleans or polishes such teeth;
(4) applies and uses within the patient's mouth such antiseptic sprays, washes, or medicaments for the control or prevention of dental caries as his or her employer dentist may direct;
(5) treats gum disease;
(6) uses impressions and x-ray photographs for treatment purposes; or
(7) administers local dental anesthetics or nitrous oxide, except for the administration of local dental anesthetics or nitrous oxide by:
(A) a dentist as provided in IC 25-14-1-23(a)(6);
(B) a physician licensed under IC 25-22.5; or
(C) a dental assistant (as defined in IC 25-14-1-1.5(4)) in compliance with section 10.7 of this chapter.