Every group contract entered into by a dental service corporation with any policyholder shall be in writing and a contract form stating the terms and conditions thereof shall be furnished to the policyholder to be kept by him. No group contract form shall be used unless it contains the following provisions:
Any such group contract may contain a provision that all dental services paid for by a dental service corporation shall be in accordance with the accepted dental practices in the community at the time, but the corporation shall not be liable for injuries resulting from negligence, misfeasance, malfeasance, nonfeasance or malpractice on the part of any officer or employee or on the part of any dentist or others engaged by him in the course of rendering dental services to persons covered.
Any dental service corporation may classify persons covered whereby under specified circumstances a covered person may pay a participating dentist for dental services an amount in addition to that payable by the corporation for dental services and the group contract shall contain the provisions thereof and specify such circumstances.
N.J.S. § 17:48C-18