Ohio Rev. Code § 4715.28: Prohibited acts.

No person shall practice as or perform the duties of a dental hygienist in violation of sections 4715.20 to 4715.27, inclusive, of the Revised Code.

Whoever violates this section shall be guilty of a misdemeanor and shall be subject to the penalties provided for the illegal practice of dentistry in section 4715.99 of the Revised Code.