N.C. Gen. Stat. § 90-48.1: Free choice by patient guaranteed.

No agency of the State, county or municipality, nor any commission or clinic, nor any board administering relief, social security, health insurance or health service under the laws of the State of North Carolina shall deny to the recipients or beneficiaries of their aid or services the freedom to choose a duly licensed dentist as the provider of care or services which are within the scope of practice of the profession of dentistry as defined in this Chapter. (1965, c. 1169, s. 3.)