States have adopted rules to authorize dental therapists, but not yet Ohio.
From the American Dental Education Association:
Michigan and New Mexico Adopt Finalized Dental Therapy Regulations In May, Michigan Board of Dentistry regulations for dental therapists were published in the state register (on page 33), and on May 25, New Mexico Board of Dental Health Care dental therapy regulations were adopted. The new rules in both states establish requirements for licensure, scope of practice, practice agreements with licensed dentists as well as disciplinary proceedings. The rules also establish practice settings where dental therapists are permitted to serve patients and in general, the rules limit dental therapists to practicing in settings that traditionally assist underserved populations.