Subject to the requirements of subsection (b) of this section, a dental hygienist may administer local anesthesia by inferior alveolar nerve block to facilitate the practice of dental hygiene by a dental hygienist or the practice of dentistry by a dentist, but not as a medical specialty, provided the administration of the local anesthesia is under the supervision of a dentist who: Is physically present on the premises; and Prescribes the administration of local anesthesia by the dental hygienist. Before a dental hygienist may administer local anesthesia under subsection (a) of this section, the dental hygienist shall successfully complete the following: Any educational requirements established by the Board; and A written and clinical examination as required by the Board. A dental hygienist shall obtain the education required under paragraph (1) of this subsection from an accredited dental hygiene program. A dental hygienist who successfully completed the education requirements and examination required under paragraph (1) of this subsection before October 1, 2011, shall take and successfully complete a refresher course and a clinical examination from an accredited dental hygiene program.