Dental Assistant Interview Questions
What to ask, and what a strong answer actually sounds like.
A dental assistant interview is short, and rote procedure questions mostly sort themselves out on the résumé. What separates candidates is judgement chairside under a schedule that has slipped, and how carefully they treat sterilization and credential boundaries. Ask about those.
Before the interview
Before the interview, verify any DANB CDA claim with DANB, and any state registration or radiography permit with the state board, by name.
Doing it first means the interview is about fit rather than paperwork.
Decide in advance what your state actually permits an assistant to do without an expanded-function permit — CDA vs. RDA is a good starting point — so you do not ask about duties that are not on the table where you practise.
Chairside judgement
Walk me through your sterilization routine between patients, start to finish.
What to listen for: A specific sequence — instrument handling, autoclave cycle, surface disinfection, setup for the next patient — not a general "we follow protocol" answer. Vague answers here are the ones to probe further, since this is the duty with the least room for error.
A patient is anxious and the doctor is running behind. What do you do?
What to listen for: Concrete de-escalation habits — explaining what's happening, checking comfort, keeping the patient informed — rather than "I'd just reassure them." Look for evidence they've actually done this, not just would.
Tell me about a time you caught a mistake — yours or someone else's — before it reached the patient.
What to listen for: A specific example and what they did about it, including whether they told someone. Candidates who can't produce an example, or who frame catching errors as someone else's job, are worth a follow-up.
Schedule and pressure
The schedule is running 20 minutes behind and you're setting up for the next patient. What's your priority?
What to listen for: A real trade-off — what gets prepped first, what gets communicated to the front desk or the doctor. Anyone who says they just "move faster" hasn't been tested by a real day.
How many patients a day have you typically supported, and in what kind of practice?
What to listen for: Concrete numbers and setting (general vs. specialty), and whether it matches your practice's pace. A DA used to a slower specialty schedule may need an adjustment period in a high-volume general practice.
Credentials and scope
Which certifications and permits do you currently hold — CDA, state registration, radiography, any expanded functions?
What to listen for: Specifics, not a general "I'm certified." Ask which state issued each permit, since radiography and expanded-function permits in particular don't automatically transfer between states.
Has what you're allowed to do differed between states or practices you've worked in?
What to listen for: Awareness that scope varies at all. A DA who's noticed the difference between practices or states will be careful about the boundary; one who assumes it's always the same may not check before doing something outside their permit.
Worth a second look
None of these is disqualifying on its own. Each is worth a follow-up question.
- Vague or inconsistent about which state issued their CDA, registration, or radiography permit.
- Describes sterilization protocol in general terms rather than a specific sequence.
- Can't describe how they'd flag a mistake or an unusual finding to the doctor.
- No questions about your schedule, patient volume, or support for further credentialing.
- Uses "CDA" and their state's registration interchangeably without noticing they're different things.
After the interview
Verify every claimed credential — CDA, state registration, radiography permit, any expanded-function permit — with its own issuing body before extending an offer.
Each is checked separately; none of them vouches for the others.
If you're hiring across a state line, confirm what actually transfers.
Radiography and expanded-function permits in particular are commonly state-specific and may require a new exam or course, which affects the realistic start date.
Hiring now?
Post the role and start seeing candidates who are actively looking.