N.J. Stat. Ann. § 17:48C-9

Any dental service corporation may classify subscribers whereby under specified circumstances a subscriber or covered dependents may pay a participating dentist for dental services an amount in addition to that payable by the corporation for dental services and the subscription certificate issued to any subscriber affected thereby shall contain the provisions thereof and shall specify such circumstances. No subscriber or covered dependent shall be liable for that portion of a participating dentist's fee for dental service specified in the subscriber's certificate, which is to be paid by the corporation to the participating dentist.