215 ILCS 110/4
"Dental service plan" means a plan or system under which dental service may be rendered to a subscriber or other beneficiary by a duly licensed dentist, at the expense of a dental service plan corporation, in consideration of prepayments made by or on behalf of a subscriber prior to the occurrence of the condition requiring dental service.
(from Ch. 32, par. 690.4)
(Source: Laws 1965, p. 2179.)