Oregon Revised Statutes Occupations and Professions § 679.176

(1) No dentist may use the services of any person, not licensed to practice dentistry in this state, to construct, alter, repair, reline, reproduce or duplicate any prosthetic denture, bridge, appliance or any other structure to be worn in the human mouth, unless the dentist first furnishes to such person a written work order, in substantially the following form:

TO: (Name of dental technician or laboratory with address)

RE: (Name or number of patient)

(Description of the work to be done, including diagrams if necessary, together with specifications of the type of materials to be used.)

(2) A duplicate copy of each such work order issued by the dentist shall be retained by each dentist for not less than two years. The Oregon Board of Dentistry or its agents shall be permitted to inspect, upon demand, the duplicate copies of all such work orders retained by each dentist.

(3) No work order shall permit or require the taking of impressions of any part of the human oral cavity by any person not a dentist licensed by the board.