Maryland Health Occupations Section 4-405
§ 4-405.
  A dental laboratory may make dental appliances for research, technique samples, or training purposes:
    (1)   Without a work authorization if the dental laboratory annually secures permission from the Board to use plastic typdont or dentoform type models for this fabrication; or
    (2)   Under a work authorization signed by a licensed dentist that gives the dental laboratory permission to use the dentist's cast of a particular patient and that contains:
      (i)   The name and address of the dental laboratory;
      (ii)   Patient identification by name or number;
      (iii)   The date on which the written work authorization form was completed; and
      (iv)   The name and license number of the dentist who signs the form.