There is no national orthodontic assistant license.
You can get in by training on the job as a dental assistant, or by earning DANB's Certified Orthodontic Assistant (COA), the national certification built on two exams.
States also set their own rules for specific orthodontic duties — California has an orthodontic assistant permit, and other states use different credential shapes.
Here are the routes, step by step.
Do you need certification?
Short answer: no — not nationally.
There is no national orthodontic assistant license, and states typically do not require a license to start as a dental assistant — "orthodontic assistant" is a job title, and the credentials that do exist attach to specific duties, not to the title itself.
The regulation that does exist is state law.
BLS says each state regulates dental assistants' scope of practice, and states typically do not require licenses for entry-level dental assistants — though some require a license, registration or certification for entry or advancement, for example to do radiography or infection control.
Around that base, two overlapping credential systems matter for ortho work.
On the national side, DANB's certification list includes the Certified Orthodontic Assistant (COA) alongside the CDA, NELDA and its other credentials.
On the state side, a state credential can attach to orthodontic duties — California's orthodontic assistant permit and Connecticut's expanded function dental assistant (EFDA) definition are the examples this page covers.
So the practical order is: find out what your state requires for the ortho duties you want to perform, then decide whether a national credential is worth adding on top.
If you haven't worked as a dental assistant at all yet, start with how to become a DA; the full credential landscape is in our DA certifications guide; and if you're still weighing what the job involves day to day, our orthodontic assistant role guide covers that.
Route 1: trained on the job
The first route starts with no exam at all: you get hired as a dental assistant and learn orthodontic assisting at the chair.
BLS notes that many dental assisting programs take about a year and lead to a certificate or diploma, while 2-year associate programs are less common — and that in other states, assistants learn on the job.
Which door is open to you depends partly on where you live.
Get hired as a dental assistant
States typically don't require a license for entry-level assisting, but confirm your state's rules with its dental board before you apply so you know what, if anything, you need first.Learn orthodontic chairside work
Bracket and wire handling, bonding setup, adjustment visits — learned at the chair in an ortho office rather than in a classroom.Keep CPR current from day one
Current hands-on CPR, BLS or ACLS from a DANB-accepted provider is required under DANB's COA Pathways I and II and CDA Pathways I and II, so an up-to-date card carries forward when you want certification later.Log your hours
DANB's experience pathways count approved work experience — at least 3,500 hours. Chairside time you bank now is what makes you exam-eligible later.
One limit on this route: the duties themselves are bounded by state law.
In California, for example, Business and Professions Code §1750.3(a) lists duties such as sizing, fitting and securing bands, preparing teeth and curing brackets, and placing and ligating archwires as ones an orthodontic assistant permit holder may perform under direct supervision.
What counts as basic assisting where you live is a question for your state dental board, not the job posting.
Route 2: DANB COA
The Certified Orthodontic Assistant (COA) is DANB's ortho-specific certification — one of several the national board offers, alongside the CDA, NELDA and its other credentials.
It's built from two component exams: Infection Control (ICE) and Orthodontic Assisting (OA).
Eligibility is experience-driven.
Pathway I asks for at least 3,500 hours of approved work experience plus a current or former DANB CDA; Pathway II asks for the same 3,500 hours with only a high school diploma or equivalent — so you don't have to have graduated from a dental assisting program.
Both pathways also require current hands-on CPR, BLS or ACLS from a DANB-accepted provider.
Other pathways cover completing an orthodontic assisting preparation course through a CODA-accredited program while holding a current CDA, or former COA status or a dental degree.
Assistants who did take the program route have a head start: graduation from a dental assisting or dental hygiene program with CODA accreditation plus current CPR, BLS or ACLS satisfies DANB's CDA under its Pathway I, and a current CDA is the credential half of COA Pathway I, which still asks for the 3,500 hours of approved work experience.
The combined COA exam has 215 questions with a 165-minute test time.
The ICE component can also be taken on its own — it has 75 questions with a 60-minute test time and an online proctored exam option.
Plan for renewal from the start, too.
DANB certification renews every year with continuing education, a current CPR certificate and a renewal fee.
As of DANB's October 2026 recertification packet, one certification renews with 12 continuing dental education credits and a $75 fee, and COA renewals must include at least 2 of those credits in infection control and 1 in bloodborne pathogens.
State permits
Beyond the national certification, states set their own credential rules for orthodontic duties — and the shapes differ.
These are the sourced examples; your state may do none of this, or something else again.
California's version is a dedicated permit.
The Dental Board of California issues orthodontic assistant permits, and earning one takes: a 2-hour Dental Practice Act course, an 8-hour infection control course, a board-approved ultrasonic scaling course, current BLS, a board-approved orthodontic assistant course, fingerprints, and a written board exam (Business and Professions Code §1750.2(a), as amended effective January 1, 2025).
Permit holders may then, under direct supervision, size, fit and secure orthodontic bands, prepare teeth and cure brackets once the dentist approves their position, remove bands, brackets and attachments, place and ligate archwires, and remove excess cement with an ultrasonic scaler (§1750.3(a)).
Keeping the California permit is lighter than earning it: 25 continuing education units per two-year renewal period — the same CE requirement as the RDA license — and an RDA or RDAEF who holds the permit needs no additional CE beyond the license renewal requirement to renew it.
We walk through the permit, its duties and its supervision rules in detail in our orthodontic assistant guide.
Other states use different machinery.
New Jersey's license lookup lists a Limited Registered Dental Assistant (orthodontics) credential alongside the general RDA.
Missouri's dental board issues expanded functions permits in five categories — restorative I, restorative II, removable prosthodontics, fixed prosthodontics and orthodontics.
New Maryland regulations effective August 31, 2026 created a board-certified orthodontic EFDA category, and assistants recognized under the state's old "qualified in orthodontics" classification may perform orthodontic EFDA duties only until February 28, 2027 unless they certify under the new rules.
Connecticut is the instructive outlier: the state does not license dental assistants at all.
Its expanded function dental assistant is defined by passing the DANB Certified Dental Assistant or Certified Orthodontic Assistant exam plus completing an EFDA program with CODA accreditation — and the assistant must maintain that DANB certification.
State rules decide — verify with your board
Getting hired in ortho
Orthodontic assistants work where the orthodontist works — the specialty side of dental practice.
If you want to understand the chair you'd be working beside, our orthodontist career guide covers the role, the training and the practice setting.
On pay: BLS counts all dental assistants in a single wage series and doesn't track orthodontic assistants separately, so be skeptical of any "ortho pay premium" figure you see quoted.
What the available data does and doesn't show is in our ortho assistant pay guide.
One hiring detail worth knowing: DANB runs an online Verify Credentials tool that confirms whether a person holds its certifications and exam certificates, so list your credentials exactly as DANB records them — and if you hold a state permit, name the state and the credential.
- Ask your state dental board which orthodontic duties require a credential where you live
- Get hired chairside and bank approved work experience — 3,500 hours is DANB's experience-pathway threshold
- Keep hands-on CPR, BLS or ACLS current — DANB's COA and CDA Pathways I and II require it, and California's permit requires BLS
- Pass the COA's two component exams — ICE (online proctoring available) and OA
- If your state has an ortho permit or EFDA credential, plan for it before you accept the duties
From here, the dental assistant career guide maps the wider ladder — expanded functions, other specialties, office roles — and our dental assistant job board lists current openings.
This article is general career information, not legal advice. Certification and permit rules are set by state dental boards and by the credentialing bodies themselves, and they change — confirm current requirements with your state dental board and DANB before you act on them.