(a) A dentist shall cover a patient's torso from the neck to the pelvis including the genital area with a lead apron while conducting an x-ray procedure on the patient.
(b) The board of dentistry, by rule adopted pursuant to chapter 91, shall establish minimum specifications for the lead apron; provided that the lead apron shall protect the patient's body from unnecessary exposure to x-rays yet not unduly discomfort the patient.
(c) Any violation of this section shall be considered an improper conduct in the practice of dentistry for the purpose of section 448-17.