Dental hygienist interview questions

What this hire must get done

Write the scorecard before you interview, then hire against it. Set the bracketed targets from your own numbers.

What to tell candidates before the interview

Say the hard parts plainly. People who wouldn't stay drop out early, and the ones who stay knew what they signed up for.

• Show the posted hygiene schedule: [days and hours], how long each visit type is booked for, [evenings or Saturdays], and which offices they'd work in.
• Say how hygiene production and any bonus are measured, and that you will never ask them to recommend care the charting doesn't support.
• Tell them whether they'll have assistant help or turn their own rooms, and which permits you'd use, such as local anesthesia where your state allows hygienists to give it.
• Explain that you'll check their license and any permits on the board's license lookup before they see a patient.

How to run the interview

1. Same questions, same order. Ask every candidate the questions below and the same follow-ups. It is the only way to compare people fairly.
2. Two interviewers. An owner or manager and someone who does the work. Take notes on what the candidate says, not on how you feel about them.
3. Score right after each answer. 5 sounds like the strong answer, 3 like the mixed one, 1 like the weak one. Use 2 and 4 for answers in between.
4. Rate alone, then compare. Compare candidates question by question, and talk only after everyone has scored. Big gaps are worth a conversation.

1. Technical · Accurate assessment

   Walk me through a full periodontal charting from start to finish, and how you make sure the numbers are ones the next hygienist can trust.

   Charting accuracy decides whether the dentist sees disease early or late, and it's easy to cut short on a busy day.

   Follow-ups

   • What do you compare the new chart against?
   • When readings change from last time, what do you do with that?
   • How do you chart accurately when there's no one to record for you?

   5Strong

   Charts every site and records every finding the dentists' protocol lists, such as pocket depths, bleeding and recession, the same way each time. Compares with past charts and current images, brings changes to the dentist with readings and photos, and leaves the diagnosis to the dentist.

   3Mixed

   Charts every site accurately but treats it as a form: doesn't compare with past charts, or can't say what they'd bring to the dentist.

   1Weak

   Charts only the problem areas, fills in from memory, or skips charting when behind.

2. Situational · Accurate assessment

   At a recall visit, the patient mentions a new medicine and a hospital stay since last time, but their health history form says 'no changes.' What do you do before any treatment begins?

   Health history changes can change what's safe to do today. The hygienist is usually the first to hear about them.

   Follow-ups

   • What do you ask the patient?
   • Who decides whether today's care goes ahead, and how do you bring it to them?
   • What goes in the chart?

   5Strong

   Updates the history with the patient, recording the medicine by name and the reason for the stay. Brings it to the dentist before any treatment and waits for the dentist's direction under the office protocol. Documents what was found and decided, and doesn't advise the patient about the medicine.

   3Mixed

   Tells the dentist before treating, but records only 'new medicine' without the name or the hospital stay, so the next provider can't tell what changed.

   1Weak

   Goes by the form, or starts treatment without telling the dentist.

3. Situational · Patient education

   Your charting shows the patient's gums are worse than last year. The dentist recommends deeper gum treatment, and the patient says insurance won't cover it, so they'll just have the regular cleaning. What do you say?

   How the hygienist handles a cost objection decides whether the patient gets needed care, and whether they trust the office.

   Follow-ups

   • How do you explain what you found in words they'd use?
   • What do you show them?
   • What goes in the chart if they still say no?

   5Strong

   Shows the chart and photos, explains in plain words what has changed and what could happen without treatment, and brings in the treatment coordinator for cost questions. Respects the patient's choice, does what the dentist approves for today, and records the recommendation and the refusal.

   3Mixed

   Explains the findings clearly and respects the choice, but doesn't bring in anyone who can talk through cost options or record the refusal.

   1Weak

   Does the regular cleaning without a word, or lectures and pressures the patient.

4. Situational · Care over production

   The practice manager shows you that your hygiene production per day is lower than the other hygienists' and asks you to recommend more add-on services. What do you do?

   Production pressure is real in a group. You want the hygienist who looks for honest gains and won't sell care the findings don't support.

   Follow-ups

   • What would you want to look at before you agree or disagree?
   • How do you talk it through with the manager?
   • What would you never do to raise the number?

   5Strong

   Asks to see the number alongside how full the schedule was and which visit types filled it, and looks for honest gaps: open time, overdue charting, unscheduled treatment the dentist already diagnosed. Offers fixes there and says plainly they'll recommend only what the findings and the dentist support.

   3Mixed

   Refuses to recommend care that isn't needed, but gets defensive and doesn't look for the gaps in the numbers they could fix.

   1Weak

   Agrees to push services to hit the number, or waves off the numbers entirely.

5. Behavioral · Working with the dentist

   Describe a hygiene visit where you saw something you thought the dentist should look at more closely. How did you raise it?

   It shows whether the hygienist speaks up with evidence while respecting that the dentist diagnoses.

   Follow-ups

   • What did you show the dentist?
   • What did you say to the patient while you waited?
   • How did it end, and what did you record?

   5Strong

   Raised it with the dentist privately and promptly, with photos, images or chart readings, let the dentist make the diagnosis, said nothing to the patient that undercut the dentist, and recorded what they saw and what the dentist decided.

   3Mixed

   Mentioned it during the dentist's exam, but showed no photos or readings, so it was easy to wave off.

   1Weak

   Hinted to the patient that the dentist had overlooked it, or kept quiet.

6. Situational · Working with the dentist

   The dentist has left the building for lunch. Your next patient is booked for gum treatment and asks you to numb them and start now so they can get back to work. What do you do?

   Supervision rules for anesthesia and some treatment vary by state. It shows whether the hygienist knows their own state's lines and keeps to them under pressure.

   Follow-ups

   • Which of your duties in [our state] need the dentist in the building?
   • What do you tell the patient?
   • Who do you tell afterward?

   5Strong

   Knows which duties need the dentist present under state rules and office protocol. If the anesthesia or treatment needs the dentist there, doesn't start, explains kindly, and offers to begin what's allowed or the earliest time the dentist is back. Tells the practice manager.

   3Mixed

   Doesn't start, which is safe, but can't say which duties need the dentist present, so says no to everything and the visit is lost.

   1Weak

   Starts because the patient asked, or doesn't know their state's supervision rules.

7. Behavioral · Records

   Tell me about a time one of your chart notes was questioned, by a dentist, an insurance company or an audit. What happened?

   Everyone has written a thin note. You want the hygienist who fixed it properly and changed how they write.

   Follow-ups

   • What was missing or unclear?
   • How did you correct it?
   • What do you put in every note now that you didn't then?

   5Strong

   Describes the gap honestly, added a dated correction and left the original note as written, and now writes notes differently, for example recording what was discussed with the dentist and what the patient agreed to.

   3Mixed

   Corrected the note properly, but treats it as a fluke and hasn't changed how they write notes.

   1Weak

   Can't name one, blames the software or the dentist, or edited the old note to cover the gap.

8. Behavioral · Running the chair

   Tell me about a day your hygiene schedule fell apart, like a late patient, a long gum treatment or a coworker out sick. What did you do?

   Every hygienist has these days. It shows what they protect and what they let slip when time runs out.

   Follow-ups

   • What did you cut, and what didn't you cut?
   • Who did you tell, and when?
   • Which patients left without their next visit booked?

   5Strong

   Told the front desk early, kept each patient's care complete, used gaps to prepare the next chart, handled the late patient by office policy, and still booked every patient's next visit.

   3Mixed

   Kept every patient's care complete and got through the day, but didn't tell the front desk, so patients waited without warning.

   1Weak

   Skipped charting or rushed the cleaning to catch up.

9. Behavioral · Patient education

   Think of a patient whose gums got healthier after you changed the way you coached them on home care. What did you change?

   Good hygienists coach the person in the chair instead of giving the same talk to everyone, and they can point to a result.

   Follow-ups

   • What had you been saying before that didn't work?
   • How did you find out what the patient actually did at home?
   • What did the next visit's chart show?

   5Strong

   Found out what the patient really did each day and what got in the way, chose a small change or two, watched the patient try it with the brush or floss they use at home, and points to less bleeding charted at the next visit.

   3Mixed

   Has a real success, but describes the standard talk they give everyone and credits the patient for the change.

   1Weak

   Recites one standard speech for every patient, or has no result to show.

Work exercise: chart review and patient talk

Hand finalists a made-up patient file: a health history with one change the dentist should hear about, and this visit's and last year's periodontal charts. In [15] minutes they mark what they'd raise with the dentist and write the chart note. Then, in a [five]-minute role-play, they walk an interviewer, playing a patient worried about cost, through the findings, and book the next visit. Paper only: no instruments, no patient care, and nothing from a real patient's chart. A dentist scores the clinical content.

Use made-up materials, never real customer work, and keep it to the time shown. Follow your own safety rules for anything hands-on.

Reference check questions

Tell finalists you'll call a former manager, and get their permission first. Ask about what they did, not whether they were nice.

• How complete and accurate was their periodontal charting on days the schedule ran late?
• Did you ever have concerns about them recommending care patients didn't need, or leaving out care they did?
• How did the dentists describe working with them, especially when they raised a finding?
• How did their reappointment numbers compare with your other hygienists', and would you hire them again?

Questions to skip, and what to ask instead

Ask only what the job needs. Questions that touch age, health, family or pay history can break federal, state or local law, even when you mean well.

• SkipWhat year did you finish hygiene school?

  AskAsk whether they graduated from an accredited program or other training their state accepts, and verify the license. The year isn't job-related and can reveal age.

• SkipDo you have carpal tunnel or neck problems from all those years of scaling?

  AskPut the same duties to every candidate: repeated fine hand and wrist work, sitting or standing chairside through a hygiene day of [hours]. Can you do that work, with or without reasonable accommodation?

• SkipWhat daily rate are you getting now?

  AskThis role pays [your daily or hourly rate], plus [any bonus and how it's figured]. What range do you need?

• SkipWho watches your kids on the evenings you'd work?

  AskOur hygiene days are [days and hours], plus [one evening a week] at [office]. Which parts of that schedule can you work?

Common mistakes when hiring a dental hygienist

• Judging hygienists on production alone

  The highest producer may be over-recommending, and the lowest may be losing openings the front desk never filled. Read production with schedule fill, charting rates and visit mix, and ask references about over- and under-treatment.

• Letting the license stand in for charting skill

  A license shows they passed the exams. It doesn't show they chart every site on a late afternoon or explain findings so patients act on them. The license is the entry ticket; the chart exercise tests the rest.

• Skipping the patient role-play

  Many hygienists talk well with an interviewer and stiffen with a worried patient. Five minutes of role-play about cost shows you how treatment conversations will go in your chairs.

Dental hygienist interview FAQ