Maryland Health Occupations Section 4-309
§ 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 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 faculty member at the institution named on the license, the licensee shall surrender the license to the Board secretary within 30 days.