N.J. Stat. Ann. § 45:6-58

11. Any person practicing dental hygiene in this State without first having obtained a license as provided by this act, or without the current biennial certificate of registration, or contrary to any of the provisions of this act, or any person who fails to comply with the provisions of section 9 of P.L.1979, c.46 (C.45:6-56), except a person on the inactive status list, or who practices dental hygiene or works as a registered dental assistant or limited registered dental assistant under a false or assumed name, or buys, sells or fraudulently obtains a diploma or certificate showing or purporting to show graduation or completion of a course in dental hygiene or dental assisting, or who violates any of the provisions of this act, shall be liable to a penalty of $300.00 for the first offense and of $500.00 for the second and each subsequent offense.