Md. Code, Health Occupations § 4–206

(a) Except as otherwise provided in this section, the Board may adopt rules and regulations that authorize a licensed dental hygienist to perform additional intraoral functions.

(b) The Board may not authorize a licensed dental hygienist to:

(1) Perform a diagnosis;

(2) Perform an extraction;

(3) Repair a cavity;

(4) Correct tooth placement;

(5) Perform a surgical procedure; or

(6) Administer anesthesia other than the following:

(i) Topical anesthesia; or

(ii) Local anesthesia in accordance with § 4–206.1 of this subtitle.