These regulations govern all licensed dentists, licensed dental hygienists, dental assistants, dental students, dental hygiene students, and dental assistant students. For purposes of these regulations, “protection” means the lead shielding of 0.25 millimeter lead equivalence or greater. Dental X-Ray Protection, NCRP Report No. 35 (National Council on Radiation Protection and Measurements, Issued March 9, 1970), is incorporated by reference. Protection shall be placed over the patient in accordance with Dental X-Ray Protection, NCRP Report No. 35. Protection is not required if its use would interfere with the diagnostic quality of the resultant radiographs. A violation of these regulations during the exposure of dental radiographs constitutes unprofessional conduct. Health Occupations Article, §4-506, Annotated Code of Maryland Effective date: January 14, 1985 (12:1 Md. R. 16) Regulation .02-1 adopted effective October 16, 2000 (27:20 Md. R. 1839) Regulation .03 repealed and new Regulation .03 adopted effective October 16, 2000 (27:20 Md. R. 1839)