Versions of Oregon Statutes 679.621 - Dental therapist scope of practice; duties of dentist; authority of dental therapist to supervise on LawServer 2023 Oregon Statutes 679.621 – Dental therapist scope of practice; duties of dentist; authority of dental therapist to supervise 2021 Oregon Statutes 679.621 – Dental therapist scope of practice; duties of dentist; authority of dental therapist to supervise