18 Del. Admin. Code § 1402-3.0
"Alternative Dental Plan" means a dental insurance plan or policy which is traditional insurance or an open panel HMO, and which provides for payment or contribution to an employee's or member's costs for dental services in lieu of a closed-panel HMO-type dental plan;
"Covered Persons" means employees and organization members and their dependents eligible for participation in a dental plan organization;
"Dental Plan Organization" means any person who undertakes to provide directly or to arrange for or administer one or more dental plans providing dental services.
"Employer" means any person, corporation, or entity which employs 25 or more persons and which contributes to an HMO-type dental plan for those employees and employees' eligible dependents;
"HMO-Type Dental Plan" means any contractual arrangements for dental services which requires utilization of a single dentist or closed panel of dentists;
"Organization" means any profit or not for profit group or voluntary association with at least 25 members which contributes to an HMO-type dental plan for its members and its members' eligible dependents;
18 Del. Admin. Code § 1402-3.0