Dental Assistant Requirements in New Mexico: Registration, X-Ray Rules & Allowed Duties
New Mexico does not require general registration for a dental assistant performing basic chairside duties.
The New Mexico Board of Dental Health Care certifies dental assistants for expanded functions instead: oral radiography under any level of supervision, and rubber cup coronal polishing, topical fluoride application, or pit and fissure sealants under general supervision.
Each function has its own education, exam and jurisprudence requirements.
The rule also defines direct, general and indirect supervision, and allows certification by credentials from another state with equivalent requirements.
Verify before you rely on this
At a glance
Entry-level assistant
Registration
Some levels
In the state's rules
Credential levels
None defined
Verified September 2026
Regulated by
New Mexico Board of Dental Health Care
The Short Version
- Registration or licensure
- New Mexico sets no general registration requirement for basic chairside dental assisting; certification by the board is required only to perform oral radiography, or to perform rubber cup coronal polishing, topical fluoride application or pit and fissure sealants under general supervision.
- Taking x-rays
- Certification to perform oral radiography under any level of supervision requires passing a DANB or board-approved radiation health and safety exam, the jurisprudence exam, and holding current BLS or CPR certification, per the section marked in the source as carrying a pending amendment.
Certification requirements to perform expanded functions
New Mexico's dental assistant rule governs certification for expanded functions rather than a general assistant license.
The board issues certification via several tracks: independent preparation, a dental assisting program, an accredited dental hygiene school, or credentials from another state.
A licensee may not let an uncertified assistant perform oral radiography under any level of supervision, or coronal polishing, topical fluoride application or pit and fissure sealants under general supervision, without the assistant being certified by the board.
A licensee shall not allow dental assistants to perform oral radiography under any level of supervision that are not certified or in authorized training by the New Mexico board of dental health care.
Direct, general and indirect supervision, defined
The rule defines three supervision levels.
Direct supervision means the dentist is physically present throughout the act, orders and controls it, evaluates and approves it before the patient leaves, and can respond immediately to an emergency.
General supervision means the dentist has authorized the procedure and the assistant executes it under the dentist's diagnosis and treatment plan at a time the dentist is not physically present, in facilities the board designates.
Indirect supervision means a dentist, or in certain settings a dental hygienist or expanded-function-certified dental assistant, is present in the treatment facility while the treatment is performed.
"General supervision" means the authorization by a dentist of the procedures to be used by a dental hygienist, dental assistant, expanded function dental auxiliary, dental student, or community dental health coordinator and the execution of the procedures in accordance with a dentist's diagnosis and treatment plan at a time the dentist is not physically present and in facilities as designated by the rules of the board.
Coronal polishing, fluoride and sealants certification
Certification is also required to perform rubber cup coronal polishing, topical fluoride application, or pit and fissure sealants under general supervision, unless the assistant is enrolled in a recognized program and meets listed conditions.
Coronal polishing and fluoride certification calls for study of the topic, observing five cases of each, passing a board or DANB written exam, performing the technique under personal observation on five adults and five children, and passing the jurisprudence exam.
Pit and fissure sealants certification adds 2,080 hours of chairside dental assisting in the two years before applying, study and observation of 12 sealant placements, passing a board or DANB exam, placing sealants under personal observation on five patients, and passing the jurisprudence exam.
The applicant must have 2080 hours of clinical chair side dental assisting within the two years prior to applying for certification.
Getting certified to take x-rays
Certification is required to perform oral radiography under any level of supervision.
The current text of 16.5.33.9 sets two pathways: pass the DANB written exam on radiation health and safety, valid in New Mexico for up to 24 months, or complete a board-approved training course with an integrated written exam within the 24 months before applying.
Either pathway also means passing the jurisprudence exam with a score of at least 75%, and current BLS or CPR certification from the American Heart Association, American Red Cross, or ASHI/HSI that is not a self-study course.
The source shows an earlier version of this section, since replaced, and marks the current text as carrying a pending amendment with no effective date yet printed (shown as 'XX/XX/2026' in the file).
Study by independent preparation or in a training course on radiation health and safety and pass the Dental Assisting National Board (DANB) written examination on radiation health and safety.
Certification by credentials from another state
An applicant certified in another state may apply for New Mexico certification by credentials.
The current text requires verification of certification sent directly from the other state's board attesting to status, issue date, expiration date and certification number; all certificates held by the applicant must have been in good standing for two years before application; an official letter from an accredited dental hygiene or dental assisting program director if applicable; proof of current, valid CDA or other DANB-issued credentials if applicable; and passing the jurisprudence exam with a score of at least 75%.
The source shows an earlier version of this section, since replaced, and marks the current text as carrying a pending amendment with no effective date yet printed (shown as 'XX/XX/2026' in the file).
all certificates held by the applicant must have been in good standing for two years prior to application.
Frequently Asked Questions
Do I need to register or get certified to work as a dental assistant in New Mexico?
New Mexico's rule does not set a general registration requirement for a dental assistant doing basic chairside work.
Certification from the New Mexico Board of Dental Health Care is required only to perform oral radiography under any level of supervision, or to perform rubber cup coronal polishing, topical fluoride application, or pit and fissure sealants under general supervision, per 16.5.33.8 NMAC.
Confirm which of your duties require certification with the board.
Can a dental assistant take x-rays in New Mexico, and what does it take?
Yes, once certified. 16.5.33.9 NMAC sets two exam pathways: pass the DANB written exam on radiation health and safety, or complete a board-approved training course with an integrated written exam, within 24 months of applying.
Either path also means passing the jurisprudence exam with a score of at least 75%, plus current BLS or CPR certification that is not a self-study course.
This section is marked in the source as carrying a pending amendment; confirm the current requirements with the board.
Does the dentist have to be present while a certified dental assistant works?
It depends on the supervision level.
Under direct supervision, defined in 16.5.33.7 NMAC, the dentist is physically present throughout the procedure.
Under general supervision, the dentist has authorized and diagnosed the procedure in advance but is not physically present when it is performed.
Under indirect supervision, a dentist, or in certain settings a hygienist or expanded-function-certified assistant, is present in the treatment facility while the procedure happens.
Ask the New Mexico Board of Dental Health Care which level applies to your task.
How do I get certified to perform coronal polishing, fluoride application or sealants?
Requirements differ by function.
Coronal polishing and topical fluoride certification, under 16.5.33.10 NMAC, calls for study of the topic, observing five cases of each, passing a board or DANB written exam, performing the technique under personal observation on five adults and five children, and passing the jurisprudence exam.
Pit and fissure sealants certification, under 16.5.33.11 NMAC, additionally calls for 2,080 hours of chairside dental assisting in the prior two years.
Confirm current forms with the board.
Can I get certified in New Mexico based on certification I already hold in another state?
Yes, by certification by credentials under 16.5.33.13 NMAC.
New Mexico requires verification of certification sent directly from the other state's board attesting to status, issue date, expiration date and certification number, with all certificates held in good standing for two years before applying, plus passing the jurisprudence exam with a score of at least 75%.
This section is marked in the source as carrying a pending amendment; confirm current requirements with the New Mexico Board of Dental Health Care.
Who regulates dental assistants in New Mexico?
Dental Assistants in New Mexico are regulated by the New Mexico Board of Dental Health Care.
The rules on this page come from the state's own statute and board rules as published on the dates shown; they change over time, so verify current requirements with the board before relying on them.
More New Mexico & Dental Assistant Resources
Sourced from 16.5.33 NMAC - Dental Assistants, Requirements for Certification (Effective 5/31/2023; amendments pending XX/XX/2026). Verified September 2026. This page summarizes the state's own statute and board rules as published on the dates shown. It is general information, not legal advice, and rules change: confirm anything you intend to rely on with the state dental board before acting on it.