1. Dental assistants or dental hygienists aiding or assisting licensed dentists, or dental assistants aiding or assisting dental hygienists under the general supervision of a dentist in accordance with regulations promulgated pursuant to § 54.1-2729.01;

2. The performance of mechanical work on inanimate objects only, for licensed dentists, by any person employed in or operating a dental laboratory;

3. Dental students who are enrolled in accredited D.D.S. or D.M.D. degree programs performing dental operations, under the direction of competent instructors (i) within a dental school or college, dental department of a university or college, or other dental facility within a university or college that is accredited by an accrediting agency recognized by the United States Department of Education; (ii) in a dental clinic operated by a nonprofit organization providing indigent care; (iii) in governmental or indigent care clinics in which the student is assigned to practice during his final academic year rotations; (iv) in a private dental office for a limited time during the student’s final academic year when under the direct tutorial supervision of a licensed dentist holding appointment on the dental faculty of the school in which the student is enrolled; or (v) practicing dental hygiene in a private dental office under the direct supervision of a licensed dentist holding appointment on the dental faculty of the school in which the student is enrolled;

4. A licensed dentist from another state or country appearing as a clinician for demonstrating technical procedures before a dental society or organization, convention, or dental college, or performing his duties in connection with a specific case on which he may have been called to the Commonwealth;

5. Dental hygiene students enrolled in an accredited dental hygiene program performing dental hygiene practices as a requisite of the program, under the direction of competent instructors, as defined by regulations of the Board of Dentistry, (i) within a dental hygiene program in a dental school or college, or department thereof, or other dental facility within a university or college that is accredited by an accrediting agency recognized by the United States Department of Education; (ii) in a dental clinic operated by a nonprofit organization providing indigent care; (iii) in a governmental or indigent care clinic in which the student is assigned to practice during his final academic year rotations; or (iv) in a private dental office for a limited time during the student’s final academic year when under the direct supervision of a licensed dentist or licensed dental hygienist holding appointment on the dental faculty of the school in which the student is enrolled; and

6. A graduate of an accredited dental program or a graduate of an accredited dental hygiene program engaging in clinical practice under the supervision of a licensed faculty member, but only while participating in a continuing education course offered by a dental program or dental hygiene program accredited by the Commission on Dental Accreditation of the American Dental Association.