100+ Free NDHCE Practice Questions

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2026 Statistics

Key Facts: NDHCE Exam

200

Exam Questions

FDHRC Blueprint

4 hours

Time Limit

FDHRC Blueprint

$850 CAD

Exam Fee

FDHRC 2026

550 / 800

Passing Score

FDHRC Scaled System

~87%

Average Pass Rate

FDHRC School Reports

7 Domains

Competency Domains

2021 Entry-to-Practice Standards

The NDHCE is a 4-hour, 200-question computer-based exam administered by the FDHRC. The exam fee is $850 CAD, and passing requires a scaled score of 550. It covers seven domains of the 2026 blueprint, focusing heavily on Clinical Therapy and Prevention/Health Promotion. Candidates must graduate from an accredited program or pass the equivalency assessment.

Sample NDHCE Practice Questions

Try these sample questions to test your NDHCE exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1A dental hygienist is asked by their employing dentist to perform a restorative procedure that is outside the provincial dental hygiene scope of practice, although the dentist offers to supervise. What is the most appropriate action for the dental hygienist?

A.Perform the procedure as long as direct dentist supervision is maintained throughout.

B.Refuse to perform the procedure and explain that it is outside the legislative scope of practice.

C.Perform the procedure only if the client signs an additional consent form acknowledging the situation.

D.Delegate the procedure to a dental assistant who has more experience with restorative tasks.

Explanation: Dental hygienists must practice within the legal boundaries and scope of practice defined by their provincial regulatory body. Performing procedures outside this scope, even under dentist supervision or with client consent, constitutes professional misconduct and illegal practice. The hygienist must refuse the task and advocate for practice that adheres to provincial regulations.

2During a routine periodontal assessment, a dental hygienist notes a suspicious lesion on the lateral border of the tongue. The client asks if it is oral cancer. According to professional ethical guidelines, how should the dental hygienist respond?

A.Provide a definitive diagnosis of oral cancer to ensure the client understands the gravity of the situation.

B.Inform the client of the clinical findings, explain the need for further evaluation, and refer them to a dentist or specialist for diagnosis.

C.Tell the client that it looks benign and there is no need to worry to avoid causing unnecessary anxiety.

D.Document the lesion in the chart but do not mention it to the client until the dentist has reviewed the findings.

Explanation: Diagnosing oral pathology is outside the dental hygiene scope of practice and must be performed by a dentist or oral pathologist. The dental hygienist is responsible for identifying abnormal findings, communicating these observations objectively to the client, explaining the importance of diagnostic follow-up, and facilitating the appropriate referral.

3A dental hygienist notices that a colleague frequently arrives at work smelling of alcohol and exhibiting slurred speech. What is the hygienist's primary ethical obligation in this scenario?

A.Ignore the behavior to maintain workplace harmony, as long as no client complains.

B.Offer to complete the colleague's scaling procedures to protect client safety without notifying management.

C.Report the suspected impairment to the office manager or the provincial regulatory college to protect public safety.

D.Confront the colleague privately and threaten to expose them unless they purchase a breathalyzer.

Explanation: The primary obligation of a dental hygienist is to ensure public safety and protect clients from harm. Working while impaired by substances directly compromises patient safety and clinical judgment. The hygienist has an ethical and often legal duty to report suspected impairment to appropriate authorities, such as a supervisor, office manager, or the regulatory college.

4A client requests that their dental hygiene treatments be billed under their spouse's insurance plan, which has a higher remaining annual limit. The client explains they cannot afford the treatment otherwise. What ethical principle should guide the hygienist's decision?

A.Beneficence, by altering the billing records to ensure the client receives necessary dental hygiene care.

B.Veracity, by refusing to engage in fraudulent billing practices and maintaining accurate documentation.

C.Autonomy, by complying with the client's request since they have control over their healthcare decisions.

D.Fidelity, by supporting the dentist's financial goals through maximizing insurance payouts.

Explanation: Veracity refers to truthfulness and integrity in all professional relationships and actions. Submitting insurance claims under a different person's name or plan is fraudulent and violates the ethical standard of veracity, as well as provincial laws and regulatory bylaws. The hygienist must refuse the request and document the treatment and billing accurately.

5Which of the following scenarios describes a boundary crossing rather than a boundary violation by a dental hygienist?

A.Entering into a romantic relationship with an active client of the practice.

B.Accepting a small hand-crafted token of appreciation from a long-term geriatric client.

C.Borrowing a significant sum of money from a client to cover personal dental equipment costs.

D.Disclosing detailed personal marital problems to a client during their appointment to gain sympathy.

Explanation: A boundary crossing is a brief, non-exploitative deviation from professional boundaries that may be supportive or neutral, such as accepting a minor token gift. A boundary violation is a harmful deviation that exploits the professional relationship, such as entering romantic relationships, borrowing money, or oversharing personal information that compromises professional objectivity.

6A dental hygienist in a province with self-regulation wishes to initiate orthodontic debridement. What is the primary source the hygienist must consult to verify if they can legally perform this task?

A.The manufacturer's instruction manual for orthodontic band placement.

B.The code of ethics published by the Canadian Dental Hygienists Association (CDHA).

C.The dental hygiene act and regulations of their specific provincial regulatory college.

D.The office policy manual of the private practice where they are currently employed.

Explanation: Provincial dental hygiene acts and regulations define the legal scope of practice, including which procedures can be initiated, which require orders, and which are restricted. While CDHA provides national ethical codes, provincial colleges hold the legislative authority to set rules for practice. Manufacturer instructions and office policies cannot override provincial law.

7A dental hygienist is treating a 15-year-old client who requests that their parent not be informed about their smoking habits. The client demonstrates an understanding of the risks of tobacco use and the treatment recommendations. What is the hygienist's most appropriate action?

A.Inform the parent immediately, as a minor cannot consent to confidentiality.

B.Respect the client's request for confidentiality, as they meet the criteria for a mature minor.

C.Refuse to treat the client until they agree to discuss their smoking habits with their parent.

D.Document the smoking habit but tell the client that they must tell their parent during the next visit.

Explanation: Under the mature minor doctrine in Canadian healthcare, a minor who is capable of understanding the nature, benefits, and risks of a treatment or health choice can make their own decisions, including requesting confidentiality. If the hygienist assesses the 15-year-old as competent, their privacy rights must be respected unless there is an immediate threat to life or safety.

8A dental hygienist is reviewing a consent form with a client who speaks English as a second language. The client nods and signs the form but seems confused about the risks of the scaling procedure. What should the hygienist do to ensure informed consent?

A.Proceed with the treatment since the form is signed, which legally protects the practitioner.

B.Use visual aids, simplified terminology, or a translator to ensure the client fully understands the risks and benefits before starting.

C.Ask the dental assistant to explain the form to the client in English to save clinical time.

D.Cancel the appointment and tell the client they cannot return until they have improved their English.

Explanation: Informed consent is an ongoing process, not merely a signed document. The client must understand the diagnosis, proposed treatment, alternatives, risks, and consequences of refusing treatment. If a language barrier prevents comprehension, the hygienist must take steps to facilitate understanding (visuals, translation) to ensure consent is valid.

9Which of the following research study designs provides the highest level of evidence on the effectiveness of a new therapeutic mouthwash?

A.A systematic review and meta-analysis of randomized controlled trials (RCTs).

B.A prospective cohort study tracking mouthwash users over five years.

C.A case-control study comparing mouthwash users to non-users.

D.A descriptive cross-sectional survey of dental hygienists' mouthwash preferences.

Explanation: According to the hierarchy of evidence, systematic reviews and meta-analyses of high-quality randomized controlled trials (RCTs) occupy the peak. They synthesize data from multiple primary studies to minimize bias and provide the most reliable evidence for clinical decision-making regarding interventions.

10A dental hygienist wants to determine if a new power toothbrush reduces plaque scores more effectively than manual toothbrushes. What is the correct sequence of steps in the evidence-based decision-making process?

A.Search for evidence, formulate a clinical question, critically appraise, apply to practice, evaluate outcomes.

B.Formulate a clinical question, search for evidence, critically appraise, apply to practice, evaluate outcomes.

C.Apply to practice, evaluate outcomes, search for evidence, critically appraise, formulate a clinical question.

D.Search for evidence, apply to practice, evaluate outcomes, formulate a clinical question, critically appraise.

Explanation: The standard evidence-based practice (EBP) process follows five steps: 1. Formulate a clear, answerable clinical question (often using PICO). 2. Search for the best available scientific evidence. 3. Critically appraise the evidence for validity and applicability. 4. Integrate and apply the evidence with clinical expertise and patient values. 5. Evaluate the outcomes and process.

About the NDHCE Exam

The National Dental Hygiene Certification Examination (NDHCE) is the national licensing exam for dental hygienists in Canada (excluding Quebec). Administered by the Federation of Dental Hygiene Regulators of Canada (FDHRC), it assesses entry-to-practice competence across seven domains. The examination is computer-based, consists of 200 questions, and is based on the 2021 Entry-to-Practice Canadian Competencies for Dental Hygienists.

Assessment

200 multiple-choice questions (170 scored, 30 unscored)

Time Limit

4 hours

Passing Score

550 (on a scale from 200 to 800)

Exam Fee

$850 CAD (FDHRC (Federation of Dental Hygiene Regulators of Canada))

NDHCE Exam Content Outline

37–43%

Clinical Therapy

Debridement, scaling, root planing, periodontal assessments, instrumentation, local anesthesia, pharmacology, and medical emergencies.

17–23%

Prevention, Education, and Health Promotion

Primary prevention, fluorides, caries risk (CAMBRA), health promotion, oral hygiene techniques, nutritional counseling, and community programs.

11–17%

Collaboration

Interprofessional communication, referrals, family/caregiver training, and community health advocacy.

5–11%

Professionalism

Ethical codes, informed consent, legal scope of practice, confidentiality, boundaries, and jurisprudence.

5–11%

Practice Management

Record-keeping, quality assurance, clinic safety (WHMIS/SDS), IPAC sterilization guidelines, and emergency drills.

2–8%

Evidence-informed Practice

Research hierarchies (meta-analysis to surveys), PICO formulation, literature searches, and basic biostatistics (p-values).

2–8%

Communication

Active listening, motivational interviewing, health literacy adjustments, and cross-cultural competence.

How to Pass the NDHCE Exam

What You Need to Know

Passing score: 550 (on a scale from 200 to 800)
Assessment: 200 multiple-choice questions (170 scored, 30 unscored)
Time limit: 4 hours
Exam fee: $850 CAD

Keys to Passing

Complete 500+ practice questions
Score 80%+ consistently before scheduling
Focus on highest-weighted sections
Use our AI tutor for tough concepts

NDHCE Study Tips from Top Performers

1Dedicate study time proportional to the blueprint weights: clinical therapy and prevention make up over 60% of the exam.

2Understand the Spaulding classification and Canadian IPAC standards for sterilization, packaging, and waterline maintenance.

3Master local anesthesia: block injections (IAN, mental, incisive, buccal), pharmacology (amides vs. esters), and emergency drug limits.

4Review the clinical differences between Glickman furcation classes, Miller mobility classes, and AAP periodontitis staging/grading.

5Study dental hygiene health promotion models (Health Belief Model, Stages of Change) and motivational interviewing techniques.

6Know the Canadian guidelines for pediatric fluoride use (toothpaste sizes by age, optimal water fluoridation at 0.7 ppm).

Frequently Asked Questions

What is the NDHCE?

The National Dental Hygiene Certification Examination (NDHCE) is the national entry-to-practice exam required for dental hygiene registration and licensure in all Canadian provinces and territories (except Quebec). It is administered by the Federation of Dental Hygiene Regulators of Canada (FDHRC).

How many questions are on the NDHCE and what is the duration?

The NDHCE consists of 200 multiple-choice questions (170 scored operational questions and 30 unscored experimental pretest questions). Candidates have 4 hours to complete the examination.

What is the passing score for the NDHCE?

The exam results are reported on a scaled score range of 200 to 800. The standard passing score is 550. Because different sittings have different exam forms, equating is used to ensure the passing standard remains constant.

How much does it cost to register for the NDHCE?

For the 2026 exam cycle, the registration fee is $850.00 CAD (plus applicable provincial taxes). This includes a $62.00 non-refundable administrative component. A late fee of $150.00 CAD applies if registering after the regular deadline.

Who is eligible to write the NDHCE?

Graduates and students within four months of graduation from a dental hygiene program accredited by CDAC or ADA/CODA are eligible. Graduates of non-accredited or international dental hygiene programs must first complete the Substantial Equivalency Assessment through the FDHRC.

How many times can I attempt the NDHCE?

Candidates are permitted up to 4 attempts to pass the examination. However, candidates must comply with additional preparatory requirements or provincial regulatory rules between subsequent attempts.

100+ Free NDHCE Practice Questions

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