Dental Assistant Requirements in Ohio: Registration, X-Ray Rules & Allowed Duties

Ohio's rules recognize dental auxiliaries generally, then build up through three specific tiers a licensed dentist may use under direct supervision: basic qualified personnel, certified assistants, and expanded function dental auxiliaries, each authorized for a broader set of intra-oral and extra-oral tasks than the last.

A separate chapter defines the dental x-ray machine operator, also called a dental assistant radiographer, a distinct certificate specifically for taking radiographs.

Expanded function dental auxiliaries must register with the board: a sworn application, a $20 fee, proof of a qualifying background (such as certification by the Dental Assisting National Board or the Ohio Commission on Dental Assistant Certification, dental student status, or dental hygiene licensure), completion of the required education, a passing exam score, and current basic life-support certification.

Dental x-ray machine operators instead apply for a certificate, pay a $32 fee, and complete a board-approved radiography training program unless an exemption applies.

Basic qualified personnel and certified assistants are not required to register with the board itself.

These chapters use 'personal supervision' for a dentist assigning drug and medication assistance to dental auxiliaries, and 'direct supervision' for basic qualified personnel, certified assistants, and expanded function dental auxiliaries performing intra-oral and extra-oral tasks; neither term is defined here.

A certified assistant or expanded function dental auxiliary may treat a patient for up to fifteen consecutive business days without the dentist present if the assistant has two years and three thousand hours of experience, has completed a board-approved medical-emergency course, and the dentist has evaluated competence, examined the patient within the past year, and set written protocols.

A dental x-ray machine operator generally needs the dentist's direct supervision to take x-rays, unless the dentist examined the patient within the past year and ordered the procedures.

Under a dentist's direct supervision, basic qualified personnel may perform about forty listed basic remediable tasks, among them aspiration and retraction, instrument transfer, preliminary charting, several kinds of impressions, topical anesthetic and fluoride application, suture removal, placement of rubber dam over a preplaced clamp, provisional restoration placement and removal, orthodontic band and wire work, and vital-sign monitoring.

Certified assistants may additionally apply pit and fissure sealants and perform coronal polishing once they complete the specific training and certification each requires.

Expanded function dental auxiliaries may additionally place amalgam and non-metallic (including direct-bonded) restorative materials, on top of the pit and fissure sealants also open to certified assistants.

Only a certified dental x-ray machine operator, also called a dental assistant radiographer, may perform radiologic procedures, generally under the supervising dentist's direct supervision unless the dentist examined the patient within the past year and ordered the procedures.

To be certified, an applicant files an application, pays a $32 fee, and completes a board-approved dental radiography training program of at least seven hours plus clinical experience, unless already exempt for holding a Dental Assisting National Board, Ohio Commission on Dental Assistant Certification, or American Dental Technologists credential that included a radiography exam, an equivalent out-of-state license or certification, or qualifying work experience.

The rule lists tasks that may never be delegated by a licensed dentist to any auxiliary: definitive diagnosis and treatment planning; final placement or removal of fixed or removable appliances and their therapeutic adjustment; cutting procedures on the tooth's coronal, root, or supportive structures; placement of the final root canal filling; final impressions for a prosthetic restoration (athletic mouthguard impressions are excluded); occlusal registration for a prosthetic restoration; final placement of prefabricated or cast restorations or crowns; and laser procedures other than caries-susceptibility testing devices.

The rule closes with a catch-all for anything else prohibited by law or the Administrative Code.

A dental assistant may monitor nitrous oxide-oxygen (N2O-O2) minimal sedation if at least eighteen years old, with two years and three thousand hours of dental-assisting experience, a current basic life-support certification, and a completed six-hour board-approved course covering the topics rule 4715-11-02.1 sets out.

The assistant may never administer, adjust, or terminate the sedation, may monitor only one patient at a time, must physically remain with the patient, and needs the supervising dentist's approval to discharge the patient.

A certified dental x-ray machine operator must register with the board by January first of each odd-numbered year, pay a $32 biennial registration fee, and show at least two hours of continuing education in dental radiation technology completed in the preceding two years; the certificate automatically expires if not renewed.

Continuing education topics may include radiation physics, biology, health and safety, film quality, radiographic technique, and digital imaging.

The chapters do not state a separate continuing education requirement for basic qualified personnel, certified assistants, or expanded function dental auxiliaries beyond the current basic life-support certification each must maintain or renew.