Ohio Rev. Code § 4715.364: Permit required.

(A) No person shall authorize a dental hygienist to provide dental hygiene services under section 4715.365 of the Revised Code unless the person holds a current, valid oral health access supervision permit issued under section 4715.362 of the Revised Code.

(B) No person shall provide dental hygiene services under section 4715.365 of the Revised Code unless the person holds a current, valid permit issued under section 4715.363 of the Revised Code to practice under the oral health access supervision of a dentist.