(a) No dental laboratory technician may perform any dental laboratory service without the issuance of a work authorization by a dentist or other dental practitioner.
(b) Each work authorization shall contain:
(1) The name and address of the dental laboratory to which it is directed;
(2) The case identification;
(3) A specification of the materials to be used;
(4) A description of the work to be done and, if necessary, diagrams thereof;
(5) The date of issue; and
(6) The signature and address of the dentist or other dental practitioner issuing the work authorization.
(c)A separate work authorization shall be issued for each patient of the dentist or other dental practitioner for whom a dental laboratory service is to be performed.
(d) Every work authorization shall be made in duplicate with the original being delivered to the dental laboratory to which it is directed and the copy being retained in the office of the issuing dentist or other dental practitioner. A work authorization shall be saved for a period of two years from its date of issue.