32-1231. Persons not required to be licensed

This chapter does not prohibit:

1. A dentist, dental therapist or dental hygienist who is officially employed in the service of the United States from practicing dentistry in the dentist's, dental therapist's or dental hygienist's official capacity, within the scope of that person's authority, on persons who are enlisted in, directly connected with or under the immediate control of some branch of service of the United States.

2. A person, whether or not licensed by this state, from practicing dental therapy either:

(a) In the discharge of official duties on behalf of the United States government, including the United States department of veterans affairs, the United States public health service and the Indian health service.

(b) While employed by tribal health programs authorized pursuant to Public Law 93-638 or urban Indian health programs.

3. An intern or student of dentistry, dental therapy or dental hygiene from operating in the clinical departments or laboratories of a recognized dental school, dental therapy school, dental hygiene school or hospital under the supervision of a dentist.

4. An unlicensed person from performing for a licensed dentist merely mechanical work on inert matter not within the oral cavity in the construction, making, alteration or repairing of any artificial dental substitute or any dental restorative or corrective appliance, if the casts or impressions for that work have been furnished by a licensed dentist and the work is directly supervised by the dentist for whom done or under a written authorization signed by the dentist, but the burden of proving that written authorization or direct supervision is on the person charged with having violated this provision.

5. A clinician who is not licensed in this state from giving demonstrations, before bona fide dental societies, study clubs and groups of professional students, that are free to the persons on whom made.

6. The state director of dental public health from performing the director's administrative duties as prescribed by law.

7. A dentist or dental hygienist to whom a restricted permit has been issued from practicing dentistry or dental hygiene in this state as provided in sections 32-1237 and 32-1292.

8. A dentist, dental therapist or dental hygienist who is not practicing on the public at large from practicing in a recognized dental school, recognized dental therapy school or recognized dental hygiene school.