No person other than a licensed dental hygienist or a licensed dentist may engage in the practice of dental hygiene or perform dental hygiene procedures on patients, including, but not limited to, supragingival and subgingival scaling, dental hygiene assessment, and treatment planning, except for the following persons:
(a) A student enrolled in a dental or a dental hygiene school who is performing procedures as part of the regular curriculum of that program under the supervision of the faculty of that program.
(b) A dental assistant, registered dental assistant, or registered dental assistant in extended functions acting in accordance with the provisions of this chapter.
(c) A registered dental hygienist, registered dental hygienist in alternative practice, or registered dental hygienist in extended functions licensed in another jurisdiction performing a clinical demonstration for educational purposes.