Md. Code, Health Occupations § 4–309

(a) (1) Except as otherwise provided in this subsection, a license expires on the date set by the Board, unless the license is renewed for an additional term as provided in this section. A license may not be renewed for a term longer than 2 years.

(2) Except as provided in § 4–303.1 of this subtitle, a limited license to practice dentistry expires on the first anniversary of its effective date.

(3) A teacher’s license to practice dentistry or a teacher’s license to practice dental hygiene expires on the earlier of:

(i) The date set by the Board, unless the license is renewed for an additional term as provided in this section; or

(ii) The date when the licensee ceases to be a full–time or part–time faculty member at the institution named on the license.

(b) If a teacher’s license to practice dentistry expires because the licensee no longer is a full–time or part–time faculty member at the institution named on the license, the licensee shall surrender the license to the Board secretary within 30 days.

(c) At least 1 month before a license expires, the Board shall send to the licensee, by electronic means or first–class mail to the last known electronic or physical address of the licensee, a renewal notice that states:

(1) The date on which the current license expires;

(2) The date by which the renewal application must be received by the Board for the renewal to be issued and mailed before the license expires; and

(3) The amount of the renewal fee.