Hire a Certified Assistant or Train on the Job?
The deciding factor isn't a pros-and-cons list — it's what your state permits before day one.
Dental assisting is one of the few clinical roles a practice can legally fill two very different ways: hire someone who already holds a credential, or bring on a beginner and train them chairside. Which one is actually available to you depends on your state, not on which approach you'd prefer.
The binding constraint is your state, not a preference
Dental assisting has one of the lightest regulatory floors in the practice — many states let someone start with no prior credential at all and train entirely on the job.
Other states require a state-issued credential, commonly called an RDA or LDA, before a new hire may work chairside at all, which takes on-the-job training off the table as a starting point.
This is the fact to check first, before you post the role or interview anyone.
Our school vs. on-the-job training guide covers how this splits by state and what to verify with your own dental board before assuming either path is available to you.
The credential names are not interchangeable
If you do decide to hire someone already credentialed, the labels are where most employers get tripped up.
The Dental Assisting National Board's CDA is a national certification; your state's own registration or licence — commonly RDA or LDA, and sometimes also confusingly called "CDA" — is a separate, state-issued credential with its own requirements.
Holding one does not mean a candidate holds the other.
See CDA vs. RDA and the dental assistant title maze before you write the credential line in a job posting, and before you assume a candidate's out-of-state credential transfers here — several states require their own exam or registration even from an experienced, certified assistant.
Radiography is a separate permit again in most states, issued on top of whichever assisting credential applies.
A candidate can be fully certified and still not be authorized to take x-rays without it — see can a dental assistant take x-rays before assuming either hire is ready for that duty on day one.
If you train on the job
Training on the job trades money for time.
You are not paying a credential premium, but you are absorbing a slower ramp-up while a beginner learns sterilization protocol, tray setups, and your specific workflow — and in most states, a trainee cannot take x-rays or perform any expanded function until they hold the permit that duty requires.
Confirm your state actually allows it before you advertise an entry-level, will-train role.
Where it's allowed, be explicit in the listing about what the trainee will and won't be doing until they're permitted for it — a vague listing here reads as a practice that hasn't checked its own state's rules.
If you hire someone already certified
A certified hire generally ramps faster, since the base credentialing is already done.
Verify exactly which credential they hold and whether it's valid in your state before you rely on it — the DANB CDA directly with DANB, and any state registration or radiography permit directly with your state board, by name, not by résumé claim.
On pay, the national median is $48,070 a year, with the middle 50% between $44,340 and $58,090 (BLS OEWS, SOC 31-9091, May 2025).
BLS does not publish a separate wage for certified versus on-the-job-trained assistants, so there is no fixed premium percentage to budget against — certification tends to correlate with higher pay because it lowers hiring risk and often overlaps with the radiography permit, not because of a published differential.
See what to pay a dental assistant for the full budget breakdown.
Most practices end up doing both
The two paths aren't exclusive.
It's common to hire a trainee for base chairside duties and support them toward a radiography permit, a CDA, or expanded functions over time — which is also how many assistants build their own careers.
Framing the role that way in your posting can widen your applicant pool without changing what the job actually requires on day one.
Questions to answer before you decide
- Does your state require a credential before someone may work chairside at all, or is on-the-job training legally available to you?
- Does the role need x-rays or an expanded function from day one, or can that wait for a permit?
- If you're hiring someone already certified, does their specific credential — CDA, RDA/LDA, radiography — actually apply in your state?
- Do you have someone qualified and willing to train a beginner, and can you absorb a slower first few weeks?
Questions employers ask
Is on-the-job training legal for dental assistants?
It depends entirely on your state. Many states allow it with no prior credential; others require a state-issued credential, commonly an RDA or LDA, before someone may work chairside at all. Check with your state dental board — see our school vs. on-the-job training guide for how this splits by state.
Does a certified dental assistant get paid more than one trained on the job?
There's no official, published premium — BLS reports one occupation-wide wage (national median $48,070, BLS OEWS, SOC 31-9091, May 2025) rather than a split by training path. Certification tends to correlate with higher pay because it lowers hiring risk and often overlaps with the radiography permit, but there's no fixed percentage to budget against.
Can I advertise a dental assistant role as "no experience necessary"?
Yes, if your state allows on-the-job training and the listed duties fit what a beginner may legally perform there. Be explicit that x-rays or expanded functions wait until the relevant permit is in place — see our job description template for how to phrase it.
More hiring resources
Ready to decide?
Post the role either way — you can specify "will train" or "certification required" and edit the listing after it's live.