Oregon State Requirements

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Radiography Requirements

To legally operate dental x-ray equipment and perform dental radiographic procedures under general supervision* in Oregon, a dental assistant must meet the requirements shown below.

  • Radiography Requirements

    To perform dental radiography procedures in Oregon, a dental assistant must hold a state certificate of radiologic proficiency. To obtain this certificate, a dental assistant must do one of the following: 

    1.  Complete all of the following three requirements and apply to DANB for a state certificate of radiologic proficiency:

    a.  Complete a course approved by the Oregon Board of Dentistry (OBD)*, or submit evidence of equivalent training recognized by the Oregon Health Authority, Center for Health Protection, Radiation Protection Services and

    b.  Pass the national DANB Radiation Health and Safety (RHS) exam or DANB Certified Dental Assistant (CDA) exam, and

    c.  Pass the Oregon Clinical Radiologic Proficiency exam** administered by DANB (radiographs must be submitted for grading within six months after they are taken), OR

    2.  Complete one of the following two requirements and apply to DANB for a state certificate of radiologic proficiency by credential:

    a.  Be certified in another state that has training and certification requirements substantially similar to Oregon’s, OR

    b. Obtain verification from an employer dentist that the assistant has been employed for at least 1,000 hours in the past two years as a dental assistant (in a state other than Oregon) and is competent to take radiographs.

    *The DALE Foundation’s DANB RHS Review course is approved by the Oregon Board of Dentistry and meets the course requirement to earn the Oregon Radiologic Proficiency Certificate. 

    * Note: A dentist or dental hygienist may authorize a dental assistant who has completed the course and written exam requirements described above to perform radiographic procedures under the indirect supervision of a dentist, dental hygienist, or dental assistant who holds an Oregon Radiologic Proficiency Certificate. The dental assistant must successfully complete the clinical examination within six months of the dentist authorizing the assistant to take radiographs. 


    Oregon Clinical Radiologic Proficiency Exam Application (PDF)
    Oregon Clinical Radiologic Proficiency Certificate: Pathway II (PDF)
    Learn more about DANB's Radiation Health and Safety (RHS) exam
    Learn more about DANB's Certified Dental Assistant (CDA) certification 

Dental Assisting Job Titles and Requirements for Each Level

  • Dental Assistant

    A dental assistant in Oregon may perform basic supportive dental procedures specified by the state dental practice act under the direct supervision of a licensed dentist.

    There are no education or training requirements for this level of dental assisting.

  • Expanded Function Dental Assistant (EFDA)

    To perform expanded functions in Oregon under the supervision of a licensed dentist, a dental assistant must earn an Oregon Expanded Function Dental Assistant (EFDA) certificate.To qualify, one must:

    Pathway I:
    1.  Hold an Oregon Certificate of Radiologic Proficiency (see requirements above), AND
    2.  Successfully complete a CODA-accredited dental assisting program, AND 
    3. Apply for the Oregon EFDA certificate (administered by DANB). 

    Pathway II:
    1. Hold an Oregon Certificate of Radiologic Proficiency (see requirements above), AND
    2.  Pass the national DANB Certified Dental Assistant (CDA) exam, AND
    3.  Pass the Oregon Expanded Functions – General Dental Assisting exam (ORXG), AND
    4.  Provide endorsement from an Oregon licensed dentist stating that the applicant has completed clinical requirements, AND 
    5. Apply for the Oregon EFDA certificate (administered by DANB). 

    Pathway III:
    1. Hold an Oregon Certificate of Radiologic Proficiency (see requirements above), AND
    2.  Pass the Oregon Basic Dental Assisting exam (ORB), AND
    3.  Pass the Oregon Expanded Functions – General Dental Assisting exam (ORXG), AND
    4.  Provide endorsement from an Oregon licensed dentist stating that the applicant has completed clinical requirements, AND
    5. Apply for the Oregon EFDA certificate (administered by DANB).

    Pathway IV: 
    1. Be certified in another state that has training and certification requirements substantially similar to Oregon’s requirements or obtain verification of competence from a licensed dentist of having been employed for at least 1,000 hours in the past two years as a dental assistant performing expanded functions, AND
    2. Apply for the Oregon EFDA certificate by credential (administered by DANB). 

    Note: An EFDA may apply pit and fissure sealants and temporary soft relines to full dentures upon successful completion of a course of instruction (in the desired expanded function) in a CODA-accredited program or other course of instruction approved by the Oregon Board of Dentistry.

    Oregon Expanded Functions - General Dental Assisting: EFDA Pathway I Application (PDF) 
    Oregon Expanded Functions - General Dental Assisting: EFDA Pathways II and III Application (PDF)
    Oregon Expanded Functions - General Dental Assisting: EFDA Pathway IV (PDF)
    Learn more about DANB's Certified Dental Assistant (CDA) certification
    CODA-Accredited Dental Assisting Programs 

  • Expanded Function Dental Assistant (EFDA) with Restorative Functions Certificate

    To perform placement and finishing of direct alloy or direct composite restorations under the indirect supervision of a dentist, subject to OBD regulations, an EFDA must hold a Restorative Functions certificate. To qualify, an EFDA must:

    1a. Complete an OBD-approved restorative functions curriculum from a CODA-accredited program or other course of instruction approved by the OBD, AND

    1b. Pass the Western Regional Examining Board (WREB) Restorative Exam or other equivalent exam approved by the OBD within the five years preceding application, AND

    1c. Apply for the Oregon Restorative Functions certificate (administered by DANB), OR

    2a. If the applicant passed the WREB Restorative Exam or other equivalent OBD-approved exam more than five years before application, submit verification from another state or jurisdiction where the applicant is legally authorized to perform restorative functions and verification from the supervising dentist of successful completion of at least 25 restorative procedures within the immediate five years preceding application, AND

    2b. Apply for the Oregon Restorative Functions certificate (administered by DANB.)

    Oregon Expanded Functions — Dental Assistant with Restorative Functions (PDF)

  • Expanded Function Orthodontic Dental Assistant (EFODA)

    To perform expanded orthodontic functions in Oregon under the supervision of a licensed dentist, a dental assistant must earn status as an Expanded Function Orthodontic Dental Assistant (EFODA). To be certified, one must successfully complete all of the following requirements in ONE of the following four pathways:

    Pathway I:
    1.  Complete a course of instruction in a CODA-accredited dental assisting program, AND
    2.  Apply for Oregon EFODA certification (administered by DANB).  

    Pathway II:
    1.  Pass the national DANB Certified Dental Assistant (CDA) exam or Certified Orthodontic Assistant (COA) exam, AND
    2.  Pass the Oregon Expanded Functions – Orthodontic Assisting exam (ORXO), AND
    3.  Provide endorsement from an Oregon licensed dentist stating that the applicant has successfully completed the clinical requirements, AND
    4.  Apply for the Oregon EFODA certificate (administered by DANB). 

    Pathway III:
    1.  Pass the Oregon Basic Dental Assisting exam (ORB), AND
    2.  Pass the Oregon Expanded Functions – Orthodontic Assisting exam (ORXO), AND
    3.  Provide endorsement from an Oregon licensed dentist stating that the applicant has successfully completed the clinical requirements, AND
    4.  Apply for the Oregon EFODA certificate (administered by DANB). 

    Pathway IV:
    1. Be certified in another state that has training and certification requirements substantially similar to Oregon’s requirements or obtain verification from a licensed dentist of having been employed for at least 1,000 hours in the past two years as a dental assistant performing expanded orthodontic functions, AND
    2. Apply for the Oregon EFODA certificate by credential (administered by DANB).


    Oregon Expanded Functions - Orthodontic Dental Assisting: EFODA Pathway I (PDF) 
    Oregon Expanded Functions - Orthodontic Dental Assisting: EFODA Pathways II and III (PDF)
    Oregon Expanded Functions - Orthodontic Dental Assisting: EFODA Pathway IV (PDF)
    Learn more about DANB's Certified Orthodontic Assistant (COA) certification 
    CODA-Accredited Dental Assisting Programs

  • Anesthesia Monitor

    To perform the duties of an Anesthesia Monitor, a dental assistant must:

    1. Receive training in monitoring patients under sedation and be capable of assisting with procedures, problems and emergency incidents that may occur as a result of the sedation or secondary to an unexpected medical complication, AND
    2. Maintain current certification in Health Care Provider BLS/CPR training or equivalent, AND
    3. Receive training in monitoring vital signs, AND
    4. Be competent in the use of monitoring and emergency equipment appropriate for the level of sedation utilized
  • Anesthesia Dental Assistant

    A dental assistant in the state of Oregon must hold state certification as an Anesthesia Dental Assistant in order to perform the specified anesthesia assisting functions. To qualify, one must:

    1.  Hold a current Health Care Provider BLS/CPR certification, AND

    2a.  Successfully complete the Oral and Maxillofacial Surgery Anesthesia Assistants Program conducted by the American Association of Oral and Maxillofacial Surgeons, or

    2b.  Successfully complete the Oral and Maxillofacial Surgery Assistants Course conducted by the California Association of Oral and Maxillofacial Surgeons, or

    2c.  Have passed the DANB Certified Oral and Maxillofacial Surgery Assistant (COMSA) exam (prior to the discontinuation of the COMSA exam in 2000), AND

    3.  Apply for the Oregon Anesthesia Dental Assistant certificate (administered by DANB).


    Note: The Oregon state dental practice act specifies that, in addition to the exams, courses and programs listed on this page, a dental assistant may complete any successor or otherwise Board-approved exams, courses or programs. For more information, please contact the Oregon Board of Dentistry at www.oregon.gov/dentistry.

    Oregon Anesthesia Assistant Certificate (PDF)

  • Anesthesia Dental Assistant with IV Therapy Certificate

    To initiate intravenous (IV) lines in Oregon for a patient being prepared for IV medications, sedation or general anesthesia under the indirect supervision of a dentist holding the appropriate anesthesia permit, an Anesthesia Dental Assistant must earn an additional endorsement. To qualify, an Anesthesia Dental Assistant must:

    1. Complete a course in intravenous access or phlebotomy approved by the OBD, AND
    2. Apply for the Oregon Anesthesia Dental Assistant with IV Therapy certificate (administered by DANB)

    Oregon Anesthesia Dental Assistant with IV Therapy Certificate (PDF)

  • Expanded Function Preventive Dental Assistant (EFPDA)

    To perform expanded preventive functions in Oregon under the supervision of a licensed dentist, a dental assistant must earn an Oregon Expanded Function Preventive Dental Assistant (EFPDA) certificate. To qualify, one must:

    Pathway I:
    1.  Hold an Oregon Certificate of Radiologic Proficiency (see requirements above), AND
    2.  Successfully complete a preventive functions course within a CODA-accredited program, AND 
    3. Apply for the Oregon EFPDA certificate (issued by DANB on behalf of the Oregon Board of Dentistry). 

    Pathway II:
    1. Hold an Oregon Certificate of Radiologic Proficiency (see requirements above), AND
    2.  Pass the national DANB Certified Preventive Functions Dental Assistant (CPFDA) exam, AND
    3.  Pass the Oregon Expanded Functions – General Dental Assisting exam (ORXG), AND
    4.  Provide endorsement from an Oregon licensed dentist stating that the applicant has completed clinical requirements, AND 
    5. Apply for the Oregon EFPDA certificate (issued by DANB on behalf of the Oregon Board of Dentistry). 

    Pathway III:
    1. Hold an Oregon Certificate of Radiologic Proficiency (see requirements above), AND
    2.  Pass the Oregon Basic Dental Assisting exam (ORB), AND
    3.  Pass the Oregon Expanded Functions – General Dental Assisting exam (ORXG), AND
    4.  Provide endorsement from an Oregon licensed dentist stating that the applicant has completed clinical requirements, AND
    5. Apply for the Oregon EFPDA certificate (issued by DANB on behalf of the Oregon Board of Dentistry).

    Pathway IV: 
    1. Be certified in another state that has training and certification requirements substantially similar to Oregon’s requirements or obtain verification of competence from a licensed dentist of having been employed for at least 1,000 hours in the past two years as a dental assistant performing expanded preventive functions, AND
    2. Apply for the Oregon EFPDA certificate (issued by DANB on behalf of the Oregon Board of Dentistry).

    Oregon Expanded Function Preventive Dental Assistant: EFPDA Pathway I
    Oregon Expanded Function Preventive Dental Assistant: EFPDA Pathways II and II
    Oregon Expanded Function Preventive Dental Assistant: EFPDA Pathway IV