In a special Oregon legislative session in 2010, lawmakers passed HB 3665 which states that, “… dental services contract may not restrict price that dental health services provider may charge for services unless services are covered by insurer.”
Note that it states it was to sunset in 2015. However, in 2013 HB 2946 repealed the sunset. It is law in Oregon.
Do not let an insurer dictate pricing to your practice unless you are under contract to that insurer for that dental service.