Dental Therapist Interview Questions
What to ask, what a strong answer sounds like, and what to verify before you offer.
A license and a resume cannot tell you whether a dental therapist can do the job in your practice.
The interview is where you learn how they work under a collaborative agreement, which restorative procedures they actually perform, how they handle supervision, and whether they know the limits their state sets.
The questions below are grouped by what each one tests, with notes on what a strong answer sounds like.
Before the interview
Verify the license before you spend an interview hour with anyone.
Ask for the license number in your screening reply and check it with the state board: Colorado's licensing roster lists a Dental Therapist credential, Michigan's LARA lookup includes Dental Therapist among its license types, and Idaho, Maine, Nevada, Oregon, Vermont, Washington and Wisconsin all credential dental therapists as well.
Go in knowing this is a small, state-by-state profession.
A count reported by Stateline in July 2024 listed 14 states authorizing dental therapists in at least some settings — Alaska, Arizona, Colorado, Connecticut, Idaho, Maine, Michigan, Minnesota, Nevada, New Mexico, Oregon, Vermont, Washington and Wisconsin.
Authorization, permitted settings and supervision limits are state-specific, so before anything else, confirm with your state dental board that your state authorizes the role and on what terms.
Keep every question job-related.
If you have between 15 and 19 employees, you are already covered by the federal laws that prohibit discrimination based on race, color, religion, sex (including pregnancy, sexual orientation or transgender status), national origin, disability and genetic information — so a candidate's age, family plans, health or religion never belong in the conversation.
If you want to see a candidate work before offering, fix two rules in place.
First, pay for the hours: in 2018 the U.S. Department of Labor found that a Nashville dental practice violated federal minimum wage requirements by requiring candidates to complete a "working interview" without paying them for the time.
The federal test turns on whether the person is suffered or permitted to work, so calling the shift an observation or a trial is not a safe way around pay — and purely observational shadowing, where no work happens, was not clearly settled by the sources behind this page, which is exactly why paying for any shift where the candidate touches anything is the simple rule.
Second, check licensure before any hands-on work: what a candidate who is not yet licensed in your state may lawfully do is set by your state's dental practice act, so ask your state dental board before you schedule one.
Our page on running a working interview covers the mechanics, and structured skills assessments are the lower-risk way to test restorative technique without a live patient.
Set expectations for the pool, too.
Per the Oral Health Workforce Research Center (March 2025), Alaska, Minnesota and Washington had established dental therapy education programs, while Oregon, Michigan, Wisconsin and Vermont were still developing them — so a strong candidate may well have trained in a different state than the one they would work in.
Ask where they trained, and confirm with reference checks which procedures they actually performed rather than the title they held.
Clinical and technical questions
Which restorative procedures have you performed independently, start to finish, in your last role?
What to listen for: Named procedures and honest boundaries.
Maine's statute, for example, lists simple cavity preparations and restorations and simple extractions among the procedures a dental therapist may perform in limited practice settings, under a written practice agreement and a Maine-licensed dentist's general supervision — a strong candidate can say which procedures like those they carry out routinely and which they have only assisted on.
How do you decide a case is beyond what you should handle, and needs the dentist to take over?
What to listen for: A concrete boundary, not a shrug: which cases they hand over, how early they flag it, and whether they treat the escalation as routine practice rather than an admission of failure.
Walk me through a new patient's first visit with you, from assessment to a signed treatment plan.
What to listen for: A repeatable sequence — assessment, radiographs, charting, a plan presented in plain language, and a handoff to the supervising dentist for review or sign-off.
Vagueness about the handoff is the tell.
What is your experience with pediatric patients?
What to listen for: Settings and specifics: school-based programs, public health clinics, behavior management approaches they actually use, and how they keep a young child still long enough for a restoration.
If your patient base is pediatric-heavy, ask what share of their patients were children and probe for real examples.
Tell me about a restoration that failed or a case that did not go to plan.
What to listen for: Ownership and a re-treatment path: how they found the failure, what they told the patient and the dentist, and what they changed afterwards.
A candidate who has never had a case go wrong has either not done much restorative work or is not telling you.
Which restorative materials do you reach for, and why?
What to listen for: Real fluency: material names, trade-offs around isolation and moisture and cavity size, and how their choices differ for a child versus an adult.
An answer that amounts to whatever the office stocked is weak for a role built on restorative work.
How do you balance speed against quality when the schedule is full?
What to listen for: Comfort with the tension: a daily rhythm they can defend, quality checks they actually use — recall exams, the supervising dentist evaluating their work — and honesty that rework costs more time than it saves.
Speed with no quality mechanism is the wrong answer in a supervised model.
Scope, license and compliance questions
What does your state license you to do, and where did you last confirm that?
What to listen for: The state named without prompting, permitted procedures and settings described accurately, and a source — the board's own scope list, their program, or their practice agreement.
Authorization, permitted settings and supervision limits are all decided state by state, so an answer that describes the profession in generic national terms is a problem.
Have you worked under a written collaborative management or practice agreement? What did it cover?
What to listen for: Firsthand specifics: who the collaborating dentist was, which procedures the agreement authorized, and how reviews work.
In Minnesota, a dental therapist must sign a written collaborative management agreement with a Minnesota-licensed dentist before providing services, and one dentist may hold agreements with no more than five dental therapists or advanced dental therapists at once.
Vermont requires the collaborative agreement to be reviewed, updated and submitted to the Board annually and whenever it changes.
Which settings is a dental therapist allowed to practice in, in your state?
What to listen for: Setting fluency.
Minnesota limits therapists to primarily practicing in settings that serve low-income, uninsured and underserved patients or in a dental health professional shortage area; Arizona to settings such as federally qualified health centers, community health centers and nonprofit practices serving low-income patients; Nevada to listed settings such as hospitals, rural health clinics and FQHC-type facilities; Connecticut to practice in a public health facility; and Wisconsin to a shortage area or a setting where at least 50 percent of patients are on Medical Assistance, uninsured, or another listed category.
They should know their own state's version cold.
Where are you in your supervision hours — direct supervision still, or cleared for general supervision?
What to listen for: They know the thresholds that apply to them.
Arizona requires 1,000 hours of clinical practice under a dentist's direct supervision before a therapist enters a written collaborative practice agreement, and caps a dentist at four such agreements; in Nevada, direct supervision runs until the therapist reaches 500, 1,000 or 1,500 clinical hours depending on prior licensure and hygiene experience; Wisconsin allows general supervision only after at least 2,000 hours under direct or indirect supervision.
Ask what their own agreement requires, not just the statute.
Where did you do your dental therapy training, and what credential did you finish with?
What to listen for: A named program and its accreditation status.
Arizona, for example, requires licensure candidates to graduate from a dental therapy program accredited by — or holding initial accreditation from — the ADA Commission on Dental Accreditation, and CODA's standards require at least three academic years of full-time postsecondary instruction or its equivalent.
Backgrounds differ by state: in Connecticut, a dental therapist is by definition a licensed dental hygienist practicing dental therapy under a collaborative agreement, so ask how their prior license fits the therapy role.
What is your state's position on narcotics and sedation for dental therapists?
What to listen for: A precise answer.
Minnesota bars dental therapists from dispensing or administering narcotic drugs, and a Minnesota rule also bars therapists, hygienists and licensed dental assistants from administering general anesthesia or deep, moderate or minimal sedation; Arizona bars narcotic dispensing and administration too.
Being unsure is fine — an intention to check with the board beats a confident guess.
Is your license active and unrestricted in this state, and can you share the number now?
What to listen for: A direct answer and the number on the spot.
Anything hedged — in process, pending renewal, a state you have not confirmed — gets verified with the board before the next round, not after an offer.
How did insurance billing work under your last practice agreement?
What to listen for: Who filed claims, under whose numbers, and how the work was documented.
Arizona bars dental therapists from independently billing any individual or third-party payor, which shows why billing responsibilities belong in the agreement itself.
Confirm with your Medicaid carrier how your state's program treats dental therapists before you rely on any billing assumption.
Team and patient questions
What does a good working relationship with your supervising dentist look like in practice?
What to listen for: Rhythms, not slogans: morning huddles, chart reviews, how a case gets escalated mid-procedure, who signs off on what.
In Connecticut, the collaborating dentist is professionally responsible and legally liable for the therapist's authorized services — the standard of accountability your own agreement has to support.
Have you directed the work of assistants or hygienists? How do you delegate?
What to listen for: Real examples with tasks and follow-up.
Where the role includes supervising others, state rules set ceilings — Maine allows a dental therapist to be delegated supervision of up to 2 dental hygienists and 3 unlicensed persons in a practice setting through the written practice agreement, and Michigan caps a therapist at supervising 3 dental assistants and 2 dental hygienists per practice setting.
Ask how they delegate day to day rather than whether they have memorized caps.
Describe the patient population you serve now.
What to listen for: Specifics about insurance mix, income, language and access barriers.
In the states that restrict therapists to underserved settings, that population is the job rather than a bonus assignment — listen for evidence they have actually served it, not just willingness to.
How do you explain a treatment plan to someone who has avoided the dentist for years?
What to listen for: Plain language, sensible sequencing — what hurts now versus what can wait — cost conversations handled without judgment, and follow-through.
Ask for a real patient example, not a philosophy.
How do you document your work so the supervising dentist can review it efficiently?
What to listen for: Charting discipline: notes a dentist can scan quickly, radiographs attached, a clear flag on anything needing review.
In an agreement-based model, documentation is how supervision actually happens.
Why dental therapy, and why this kind of practice?
What to listen for: A reasoned answer that survives contact with the job's realities: underserved populations, protocol-bound practice, team care.
Someone using the role as a stepping stone is not wrong, but you want to know the plan before you invest in the agreement and the onboarding.
Red flags
None of these is automatically disqualifying.
Each one earns a follow-up question before you decide.
- Cannot name the state that issued their license, or will not share the license number.
- Describes their permitted procedures and settings in generalities and has never read their own practice agreement or their state's scope rules.
- Talks as though any practice in any state could hire them, with no awareness that authorization, settings and supervision are decided state by state.
- Lists sedation administration or narcotic dispensing among routine past duties without being able to say whether their state permits either.
- Asks no questions about the collaborative agreement, the supervising dentist's availability, or the patient population.
- Cannot describe a single restorative case — including one that went wrong — in concrete terms.
After the interview
Score every candidate against the same rubric while the interview is fresh: four dimensions, each marked strong, mixed or unclear.
Scope fluency — did they state their state's permitted procedures, settings and supervision conditions accurately?
Restorative competence — concrete procedures, materials, and an honest account of a case that went wrong.
Agreement readiness — do they know what a collaborative agreement covers, where they stand on supervision hours, and how their reporting would work?
Team and patient fit — delegation, documentation, and how they talk to anxious or underserved patients.
Anything marked unclear becomes a check with the state board or the references, not a judgment call.
Before an offer, close the loop on the credentials.
Verify the license with the state board, and ask the candidate for a self-query from the National Practitioner Data Bank: any health care practitioner may query the NPDB about themselves, and the NPDB does not send self-query results to third parties — the practitioner shares their own response with whomever they choose, so a practice that cannot query the database directly asks the candidate to request one and hand it over.
Nevada makes it unprofessional conduct for a dentist who owns a practice to fail to verify a dental therapist's license before offering employment — a standard worth copying even where no rule says the same thing.
Where this page fits: how to hire a dental therapist covers the full process from posting to offer, the job description should already list the license and agreement requirements you just tested in the interview, and if you are hiring hygienists alongside, the same structure maps onto dental hygienist interview questions.
Hiring a dental therapist?
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