Not later than July 1, 2004, and prior to the implementation of a state-wide dental plan that provides for the administration of the dental services portion of the department’s medical assistance, the Commissioner of Social Services shall amend the federal waiver approved pursuant to Section 1915(b) of the Social Security Act. Such waiver amendment shall be submitted to the joint standing committees of the General Assembly having cognizance of matters relating to human services and appropriations and the budgets of state agencies in accordance with the provisions of § 17b-8.