Dental hygienists at this level are advanced-level practitioners in assigned areas. The Dental Hygienist provides direct patient care under the general supervision of the dentist and performs other clinical and clerical functions independently of direct supervision. Employees work closely with, and under the general direction of, a dentist or periodontist. Basic Requirements: United States Citizenship: Non-citizens may only be appointed when it is not possible to recruit qualified citizens in accordance with VA Policy. Education. Applicants must possess an Associate degree or higher from an accredited dental hygiene program. The degree must have been obtained from an institution whose accreditation was in place for the year in which the course of study was completed. Approved programs are.