The following four important functions are performed by a work authorization

1.It furnishes definite instructions for laboratory procedures to be accomplished and implies an expectation of a level of acceptable quality for the services rendered. 2.It provides a means of protecting the public from the il- legal practice of dentistry. 3.It is a protective legal document for both the dentist and the dental laboratory technician. 4.It completely delineates the responsibilities of the dentist and the dental laboratory technician.