OhioCertified Dental Assistant / Expanded Function Dental Auxiliary Requirements

Program Length

9-12 months for CDA; additional 180 hours for EFDA

Minimum Education

High school diploma or GED

Many states allow dental assistants to enter the profession through on-the-job training (OJT), while others require completion of a CODA-accredited dental assisting program. Requirements vary significantly by state and credential level.

DANB CDA Details

Ohio uses its own unique CODA certification body rather than DANB

Radiology Certification Details

Radiography component is part of the 3-part state certification exam

3-part state exam: written, clinical, and radiography components

The DANB Certified Dental Assistant (CDA) credential is the nationally recognized standard, though not all states require it. Radiology certification is commonly required to take dental X-rays. CPR certification is required in most states.

Expanded functions allow dental assistants to perform additional procedures beyond basic chairside duties. Some states require a separate Expanded Functions Dental Assistant (EFDA) credential, additional training, or specific coursework to perform these duties.

Direct Supervision Procedures

EFDA expanded functions including restorative procedures

Indirect Supervision Procedures

Coronal polishing, fluoride application, sealants, impressions

General Supervision Procedures

Radiographs, sterilization

Dental assistants work under varying levels of supervision depending on the procedure. Direct supervision means the dentist must be physically present and authorize the procedure. Indirect supervision means the dentist is on-site. General supervision means the dentist has authorized the procedures but need not be on the premises.

Required CE Topics

Regulatory Board

Dental assistant credentials must be renewed on schedule. Most states require continuing education covering infection control, radiology safety, and dental practice updates. CPR certification renewal is required in most jurisdictions.

Reciprocity Requirements

• •Active certification from another state
• •Pass Ohio 3-part state exam
• •Radiology certification
• •CPR certification

Dental assistant credential reciprocity varies by state. States with similar requirements may offer endorsement pathways, while others require a full application including verification of education, certification, and work experience.