(1) Each nonprofit dental service corporation may contract with its subscribers for dental services as may be from time to time provided under any nonprofit dental service plan adopted by the corporation.
(2) The rates charged by the nonprofit dental service corporation to its subscribers shall be consistent with the proper conduct of its business and the interest of the public and shall at all times be subject to the approval of the commissioner.
(3) Nothing contained in this chapter or in any nonprofit dental service plan shall affect the ordinary professional relationship between the person rendering dental services under the plan and the subscriber to whom the services are rendered; and no action based upon or arising out of the relationship or relating to dental services rendered pursuant to a nonprofit dental service plan shall be maintained against the nonprofit dental service corporation operating the plan.