Maryland Code, Insurance § 15-135.1

(a)(1) In this section the following words have the meanings indicated.

(2) “Carrier” means an insurer, nonprofit health service plan, health maintenance organization, or dental plan organization that provides dental benefits on an expense-incurred basis under policies or contracts issued or delivered in the State.

(3) “Dental preventive care” means a preventive dental visit, screening, oral examination, teeth cleaning (prophylaxis), fluoride treatment, or routine preventive service that is a covered benefit under a policy or contract issued or delivered by a carrier.

(1) at any time during the plan year for a policy or contract that provides coverage for dental preventive care once during the plan year; or

(2) subject to subsection (c) of this section, in accordance with any frequency limitation for a policy or contract that provides coverage for dental preventive care more than once during the plan year.