Dental Hygienist Interview
Questions & Answers

Full-mouth periodontal charting: probe depths at six sites per tooth, bleeding on probing, recession, furcation involvement, mobility, and plaque index. Radiographic assessment for bone levels. Classify the patient per the 2017 AAP/EFP classification system (staging and grading). Set the treatment plan (prophylaxis vs non-surgical periodontal therapy) based on the staging, and establish recall frequency based on the risk assessment.

Tell-show-do: explain what you are doing before you do it, show instruments at a safe distance, then proceed with consent. Work from least invasive to most invasive within the appointment. Agree on a stop signal (raised hand) so the patient feels control. Acknowledge the anxiety explicitly — "many of my patients feel the same way, and we will go at whatever pace you are comfortable with." Consider nitrous oxide for patients with moderate to severe anxiety. Forcing an anxious patient through a procedure destroys the therapeutic relationship.

Standard precautions for every patient regardless of known health status. PPE: gloves, mask, protective eyewear, clinic attire. Surface disinfection with EPA-registered intermediate-level disinfectant on all touched surfaces between patients. Sterilisation of all heat-tolerant instruments via autoclave, with spore testing weekly. Sharps disposal in puncture-resistant containers. Correct sequence: personal protection before patient contact, instrument processing immediately after dismissal.

Motivational interviewing approach: ask, tell, ask — assess their current knowledge, provide targeted information, confirm understanding. Personalise to their specific deficiencies (plaque chart showing where they miss, not a generic lecture). Demonstrate technique on a model or in their mouth with disclosing tablets. Give one or two changes at a time — overwhelming the patient produces no behaviour change. Follow up at the next appointment by examining whether their targeted areas improved.

Describe the clinical finding (colour, size, location, duration, ulceration), how you documented it, how you communicated the finding to the patient without causing alarm, and how you facilitated the referral. Show you know the red flags for potentially malignant oral lesions (persistent ulcer over 2 weeks, erythroplakia, irregular border) and that early detection and referral are part of the dental hygienist's scope of practice — not a dental-only responsibility.

Structure your answer as a 60-second professional narrative: where you have been (your background), what you have done (your strongest achievement), and where you are going (why this role). Lead with your most relevant experience, not your entire career history. End with why you are excited about this specific opportunity.

Choose a genuine weakness that you have actively worked to improve. The structure is: name the weakness → show self-awareness of its impact → describe the concrete step you took to address it → show the improvement. Never say "I work too hard" — interviewers recognise this as evasion and it damages your credibility.

Use the STAR method (Situation, Task, Action, Result) but add a fifth element: what you learned. Choose a real failure, not a disguised success. Show you can take responsibility without making excuses, and demonstrate that the lesson changed your behaviour in a specific, verifiable way.

Be honest but constructive. Acceptable reasons: seeking greater scope, new challenge, skills you can not develop in the current role, or company-level changes (restructuring, direction shift). Never speak negatively about your current employer or manager — it signals you will do the same to the prospective employer in future conversations.

Describe the conflict specifically, show that you sought to understand the other person's perspective, and explain the resolution approach you took. Interviewers are assessing your emotional intelligence and whether you escalate or resolve. Avoid stories where you were right and they were wrong — choose a story where both parties grew.

Describe your specific prioritisation system: impact × urgency matrix, stakeholder alignment, or a specific tool or process you use. Then give an example where you applied it under real pressure. Show that your system is systematic rather than reactive, and that you communicate proactively when priorities change.

Choose an achievement that is specific, measurable, and relevant to the role. Lead with the result ("I reduced our error rate by 40% in 90 days"), then explain the context, challenge, and what you specifically did that drove the result. Show your ownership and impact, not just your team's work.

Be honest about your ambitions while showing that this role is a genuine step in that direction — not a stopgap. Hiring managers want to invest in people who will grow with the organisation. Show that your 5-year goal requires the specific skills and experience this role provides, making your ambition an asset for both sides.

Research before the interview and make the answer specific: cite their product, a recent company development, something about their culture or team, or a professional aspect of this particular role that matches your goals. Generic answers ("I love your values") signal you did not do the research. Specific answers signal genuine interest.

Always have 3–5 questions prepared. Ask about the biggest challenge in this role, what success looks like in the first 90 days, how the team operates, and the interviewer's own experience at the company. Never ask about salary, benefits, or holidays in a first interview. Questions show interest, strategic thinking, and that you care enough to have done research.