Any dentist may employ up to two registered dental hygienists. Such dental hygienists may remove lime deposits, accretions, and stains from exposed surfaces of the teeth, and directly beneath the free margin of the gum, give topical caries prevention treatment to the extracoronal surfaces of the teeth, and take x-rays pertaining to the field of dentistry and may perform other acts in accordance with the rules of prescribed duties, regulations and procedures promulgated by the Board of Governors. He may operate only in the office of a dentist, or in hospitals under the direct supervision of dentists; provided, Boards of Education or any organized health service may employ registered hygienists whose services shall be limited to the examination of teeth and the teaching of dental hygiene or as otherwise authorized by the Board of Governors.

Laws 1970, SB 632, c. 173, § 34, emerg. eff. July 1, 1970.