MissouriDental Assistant / Expanded Function Dental Assistant Requirements

Program Length

Varies; OJT acceptable for basic DA

Minimum Education

No minimum for basic DA; high school diploma for EFDA

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

No national certification required; EFDA permit requires specific training

Radiology Certification Details

No separate radiology certification required for basic dental assistants

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

Most dental assisting procedures for basic DA

Indirect Supervision Procedures

EFDA expanded functions with dentist on premises

General Supervision Procedures

Sterilization, infection control procedures

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.

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

• •No registration required for basic DA
• •EFDA permit requires specific training documentation

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.