100+ Free ABDPH Dental Public Health Practice Questions

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What does incidence measure in epidemiology?

Total existing cases of disease at a point in time

The rate of new cases occurring in a population over a specified period

The proportion of deaths due to a specific disease

The severity of disease in a population

to track

2026 Statistics

Key Facts: ABDPH Dental Public Health Exam

Exam Components

ABDPH — Written + Research + Portfolio + Oral

0.7 ppm

Optimal Water Fluoridation

CDC/HHS 2015 recommended concentration

~10%

Epidemiology & Biostatistics

Each ~10% on the ABDPH content outline

~$2,000-$2,500

2026 Certification Cost

ABDPH across all components (verify current schedule)

1-2 yr

CODA DPH Residency

Primary pathway per ABDPH eligibility

MPH

Required Graduate Degree

Master of Public Health or equivalent per ABDPH

The ABDPH Dental Public Health Certification is a four-component examination (Written + Research + Portfolio + Oral) administered by the American Board of Dental Public Health. Content spans epidemiology (~10%), biostatistics (~10%), fluoride/caries prevention (~10%), policy/financing (~10%), surveillance (~8%), disparities (~8%), health promotion (~8%), oral disease indices (~8%), workforce (~5%), ethics/regulation (~5%), research design (~5%), program planning (~5%), leadership (~4%), and environmental (~3%). Total fees are approximately $2,000-$2,500; candidates must hold an MPH plus completion of a CODA-accredited DPH residency (1-2 years) or an alternative/experience pathway.

Sample ABDPH Dental Public Health Practice Questions

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

1What does incidence measure in epidemiology?

A.Total existing cases of disease at a point in time

B.The rate of new cases occurring in a population over a specified period

C.The proportion of deaths due to a specific disease

D.The severity of disease in a population

Explanation: Incidence quantifies NEW cases arising in an at-risk population during a defined time interval, expressed as incidence rate (person-time) or cumulative incidence. Prevalence, by contrast, captures all existing cases (new + old) at a given point or period.

2A case-control study reports an odds ratio of 3.2 (95% CI 2.1-4.8) for sugary beverage consumption and dental caries. The correct interpretation is:

A.Sugary beverage consumers are 3.2 times more likely to develop caries over time

B.The odds of past sugary beverage exposure are 3.2 times higher among caries cases than among controls

C.32% of caries cases are attributable to sugary beverages

D.Sugary beverages cause caries in 3.2% of drinkers

Explanation: Case-control studies start with outcome status and compare prior exposure odds. The OR compares odds of exposure in cases vs. controls. It approximates RR only when disease is rare. Attributable fractions and risk statements require cohort or prevalence data.

3Which study design is BEST suited to calculate relative risk (RR) directly?

A.Case-control study

B.Cross-sectional study

C.Prospective cohort study

D.Ecological study

Explanation: Cohort studies follow exposed and unexposed groups forward in time, allowing direct calculation of incidence in each group and therefore relative risk. Case-control designs yield odds ratios; cross-sectional designs yield prevalence ratios; ecological studies examine population-level associations.

4A cross-sectional oral health survey of Medicaid-enrolled children measures caries prevalence and parental education at the same visit. What is the primary limitation?

A.Selection bias due to loss to follow-up

B.Inability to establish temporal sequence between exposure and outcome

C.Recall bias from retrospective exposure assessment

D.High cost relative to cohort designs

Explanation: Cross-sectional studies capture exposure and outcome simultaneously, so temporality (did exposure precede disease?) cannot be established. This precludes causal inference. They are useful for prevalence estimation and hypothesis generation, not causation.

5A randomized controlled trial comparing fluoride varnish to placebo is the GOLD STANDARD primarily because:

A.It is the least expensive design

B.Randomization balances known and unknown confounders across arms

C.It always uses the largest sample sizes

D.It eliminates the need for informed consent

Explanation: Random allocation distributes measured AND unmeasured confounders approximately equally between groups, providing the strongest basis for causal inference. RCTs also support blinding and intention-to-treat analysis, further reducing bias.

6Parents of children with visible caries are more likely to remember sugary snack exposures than parents of caries-free children. This phenomenon is called:

A.Selection bias

B.Recall bias

C.Observer bias

D.Confounding

Explanation: Recall bias, a form of information bias, occurs when cases and controls differ systematically in accuracy of exposure recollection. It is common in case-control studies of chronic conditions and can be mitigated by using records or blinded exposure assessment.

7In a cluster sampling design for a state oral health survey, the primary sampling units are typically:

A.Individual residents

B.Schools, census tracts, or counties

C.Randomly selected households from a national registry

D.Volunteers recruited through social media

Explanation: Cluster sampling randomly selects groups (schools, tracts, counties) and then samples within them. It reduces travel and administrative cost but usually requires a design effect adjustment because intra-cluster correlation reduces statistical efficiency.

8A screening survey enrolls volunteers from a free dental clinic, who differ systematically from the general population. This threat to external validity is:

A.Information bias

B.Selection bias

C.Misclassification

D.Residual confounding

Explanation: Selection bias occurs when the study sample is not representative of the target population, distorting estimates of prevalence or association. Volunteer samples at free clinics over-represent uninsured or high-need individuals.

9A calibration exercise reveals one examiner consistently under-scores DMFT compared to the gold-standard examiner. This is an example of:

A.Random error

B.Systematic (information) bias

C.Confounding

D.Effect modification

Explanation: Consistent under-scoring is systematic measurement error (information bias), which biases estimates in a predictable direction. Calibration training and inter-examiner reliability assessment (e.g., kappa) are standard mitigations in dental public health surveillance.

10Morbidity and mortality describe, respectively:

A.Illness burden and death in a population

B.Prevalence and incidence

C.Sensitivity and specificity

D.Exposure and outcome

Explanation: Morbidity refers to illness, disease, or disability in a population (measured by incidence, prevalence, DALYs, etc.). Mortality refers to death. Both are core measures of population health status.

About the ABDPH Dental Public Health Exam

The American Board of Dental Public Health (ABDPH) Certification validates specialty-level knowledge for independent practice as a dental public health diplomate. The examination has four components — Written (multiple-choice), Research (critique/paper), Portfolio (competency defense), and Oral (case-based discussion). Content spans epidemiology, biostatistics, fluoride and caries prevention (community water fluoridation at 0.7 ppm, silver diamine fluoride, sealants), policy and financing (Medicaid/CHIP, HRSA FQHC, dental therapist scope), surveillance (NHANES, BRFSS, ASTDD Basic Screening Survey, DMFT/dmft), oral health disparities and social determinants, health promotion theory (Health Belief Model, Transtheoretical, PRECEDE-PROCEED), oral disease indices (ICDAS, CDC/AAP periodontal case definition), workforce, ethics and regulation (HIPAA, ADA ethics, OSHA/CDC infection control), research design (CONSORT/STROBE/PRISMA/GRADE, Belmont Report IRB), program planning and evaluation (CDC Evaluation Framework, logic models, cost-effectiveness, QALYs), leadership, and environmental oral health. Requires an MPH (or equivalent) plus completion of a CODA-accredited DPH residency (1-2 years) or an alternative/experience pathway.

Questions

100 scored questions

Time Limit

Multi-component examination — Written + Research + Portfolio + Oral

Passing Score

Criterion-referenced standard set by ABDPH examiners across all four components

Exam Fee

~$2,000-$2,500 across all four components (ABDPH 2026 — verify current schedule) (American Board of Dental Public Health (ABDPH))

ABDPH Dental Public Health Exam Content Outline

~10%

Epidemiology

Descriptive vs analytic epidemiology, study designs (cohort, case-control, cross-sectional, ecological), measures of association (OR, RR, HR), incidence vs prevalence, bias (selection, information, recall), confounding and effect modification, causal inference (Bradford Hill), screening test characteristics, NHANES oral-health surveillance data.

~10%

Biostatistics

Descriptive statistics, probability distributions, hypothesis testing (t-test, ANOVA, chi-square, Fisher's exact), linear/logistic/Poisson regression, survival analysis, sensitivity/specificity and PPV/NPV, ROC, power and sample size calculation, multilevel/cluster-adjusted analyses for community-level data.

~10%

Fluoride & Caries Prevention

Community water fluoridation at the CDC/HHS optimal level of 0.7 ppm (2015 recommendation), topical fluoride (varnish, APF gel, SDF — silver diamine fluoride 38% for caries arrest), fluoride dentifrices, dental sealants (school-based programs), xylitol, caries risk assessment (CAMBRA), minimally invasive dentistry, fluorosis (Dean's Index).

~10%

Policy & Financing

Medicaid/CHIP dental coverage, Medicare (limited adult dental), ACA pediatric dental essential health benefit, HRSA and FQHC dental programs, value-based care and Medicaid MCOs, dental therapist scope (tribal and state authorization — Alaska, Minnesota, others), Medicaid EPSDT, Ryan White, federal/state legislation.

~8%

Surveillance & Oral Health Indices

Surveillance systems (NHANES, BRFSS, PRAMS, ASTDD Basic Screening Survey, Water Fluoridation Reporting System), DMFT/dmft, DMFS, PUFA/pufa, CPITN/CPI, OHI-S, plaque and gingival indices, oral cancer surveillance, ICDAS caries detection, CDC/AAP periodontal case definition.

~8%

Oral Health Disparities

Social determinants of health (income, education, housing, food security), structural racism and oral health, rural-urban divides, access-to-care barriers, cultural competency, language access, special health care needs, elderly, tribal/AI-AN populations, LGBTQ+, immigrant populations, CDC Health Equity framework.

~8%

Health Promotion & Education

Health Belief Model, Transtheoretical/Stages of Change, Social Cognitive Theory, Theory of Planned Behavior, PRECEDE-PROCEED planning framework, motivational interviewing, community-based participatory research (CBPR), social marketing, health literacy, behavior change communication, dental home.

~8%

Oral Disease Indices & Clinical Epidemiology

ICDAS caries detection, periodontal assessment with CDC/AAP case definition, oral cancer screening (visual/tactile), ECC and S-ECC definitions, developmental enamel defects, tooth loss and edentulism, oral HPV and oropharyngeal cancer epidemiology, salivary biomarkers, Healthy People 2030 oral health objectives.

~5%

Workforce & Dental Public Health Practice

Dental workforce composition (dentists, hygienists, dental therapists, assistants), HPSA/MUA/MUP designation, state scope-of-practice variation, teledentistry, interprofessional practice, community health workers, rural and safety-net workforce pipelines, ADA/ADEA/AAPHD/ASTDD organizational roles.

~5%

Ethics & Regulation

ADA Principles of Ethics and Code of Professional Conduct, HIPAA Privacy and Security Rules, informed consent and vulnerable populations, conflicts of interest, OSHA Bloodborne Pathogens Standard, CDC dental infection prevention and control guidelines, state dental practice acts, fluoridation advocacy ethics.

~5%

Research Design & Critique

RCT design and CONSORT reporting, cluster-randomized community trials, pragmatic trials, observational studies with STROBE reporting, systematic reviews and meta-analysis (PRISMA, GRADE certainty of evidence), qualitative and mixed-methods research, implementation science frameworks (RE-AIM, CFIR, PRISM).

~5%

Program Planning & Evaluation

CDC Program Evaluation Framework (engage stakeholders, describe program, focus design, gather credible evidence, justify conclusions, use findings/share lessons), logic models, needs assessment, MAPP, SWOT, process vs outcome evaluation, cost-effectiveness and cost-utility analysis, QALYs.

~4%

Leadership & Management

Public health leadership competencies, systems thinking, coalition building and partnerships, policy advocacy, budgeting and grants management, human resources, quality improvement (PDSA cycles, Six Sigma, Lean), strategic planning, crisis and risk communication.

~3%

Environmental & Occupational Oral Health

Dental amalgam and mercury stewardship (Minamata Convention on Mercury, amalgam separators per EPA), dental radiation safety (ALARA), occupational exposures in dental settings, water quality monitoring, air quality, environmental justice and oral health.

How to Pass the ABDPH Dental Public Health Exam

What You Need to Know

Passing score: Criterion-referenced standard set by ABDPH examiners across all four components
Exam length: 100 questions
Time limit: Multi-component examination — Written + Research + Portfolio + Oral
Exam fee: ~$2,000-$2,500 across all four components (ABDPH 2026 — verify current schedule)

Keys to Passing

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

ABDPH Dental Public Health Study Tips from Top Performers

1Community water fluoridation — 2026 high-yield: Current CDC/HHS recommended optimal level is 0.7 ppm (updated from 0.7-1.2 ppm range in 2015). Systematic reviews (Community Preventive Services Task Force) support fluoridation with strong evidence for caries reduction (~25% across the lifespan). Opposition arguments typically cite fluorosis and ethics of mass medication — be ready to defend using Bradford Hill causal criteria, cost-effectiveness (~$1 saves $20-38 in treatment), and equity arguments.

2Silver diamine fluoride (SDF) — high-yield: 38% SDF arrests active carious lesions via antimicrobial (silver) and remineralization (fluoride) mechanisms. FDA cleared as a Class II device for dentin hypersensitivity (off-label for caries arrest, though it is standard of care). Key public health value: non-invasive, inexpensive, ideal for access-limited populations (early childhood, special needs, nursing home). Downside: stains carious tooth structure black.

3CDC Evaluation Framework — memorize the 6 steps: (1) Engage stakeholders, (2) Describe the program (logic model), (3) Focus the evaluation design, (4) Gather credible evidence, (5) Justify conclusions, (6) Ensure use and share lessons learned. Four standards: Utility, Feasibility, Propriety, Accuracy. This is one of the most testable frameworks on the ABDPH Oral and Portfolio.

4Belmont Report and IRB — be able to cite the three core principles: (1) Respect for persons → informed consent, special protections for vulnerable populations; (2) Beneficence → minimize harm, maximize benefit, risk-benefit analysis; (3) Justice → equitable selection of subjects and distribution of burdens/benefits. Common Rule (45 CFR 46) operationalizes Belmont. Subpart D protects children; know minimal risk vs minor-increase-over-minimal-risk research.

5Healthy People 2030 oral health objectives — know baseline and 10-year targets for key measures: reduce untreated dental caries in children, reduce adult edentulism, increase sealant use in children, increase community water fluoridation coverage (target ~77.1% of U.S. on CWS receiving fluoridated water), reduce oral and pharyngeal cancer death rate, and increase the proportion of children, adolescents, and adults who used the oral health system in the past year.

Frequently Asked Questions

What is the ABDPH Dental Public Health Certification?

The American Board of Dental Public Health (ABDPH) Certification is the board exam for the ADA-recognized specialty of Dental Public Health. It comprises four components — Written (multiple-choice), Research (critique/paper), Portfolio (competency defense), and Oral (case-based discussion) — and certifies diplomates to practice, lead, teach, and conduct research in dental public health.

Who is eligible to sit for the ABDPH exam?

Candidates must hold a DDS/DMD (or equivalent) plus a Master of Public Health (MPH) or equivalent graduate public health degree. They must also have completed a CODA-accredited dental public health residency (1-2 years) OR qualify via an alternative/experience pathway recognized by ABDPH. An active unrestricted dental license in at least one U.S. jurisdiction is required.

What is the format of the ABDPH exam?

The ABDPH certification is a multi-component examination: (1) Written — multiple-choice items across the DPH content outline; (2) Research — critique and/or a qualifying peer-reviewed scholarly product; (3) Portfolio — documentation and defense of competency across DPH practice domains; (4) Oral — case-based discussion with examiners. Each component is scored independently.

How much does the 2026 ABDPH exam cost?

Total fees for the ABDPH certification cycle are approximately $2,000-$2,500 across the Written, Research, Portfolio, and Oral components — always verify the current schedule on the ABDPH/AAPHD website. Candidates who fail a component pay a per-component retake fee within the allowed qualification window.

When is the 2026 exam administered?

ABDPH typically opens applications annually with the Written administered in the fall and Oral/Portfolio defense in a following window. Exact 2026 dates, application deadlines, and the order of components should be confirmed on the ABDPH page of the AAPHD website (https://www.aaphd.org/dph).

How is the exam scored?

ABDPH uses a criterion-referenced standard set by subject-matter experts. Candidates must pass each of the four components (Written, Research, Portfolio, Oral) independently — failing one component does not require retaking the others. Score reports include domain-level feedback where applicable.

What are the highest-yield topics?

Highest-yield topics include community water fluoridation at the CDC/HHS optimal level of 0.7 ppm, silver diamine fluoride (SDF) for caries arrest, sealant programs, NHANES oral-health surveillance, DMFT/dmft and ICDAS, CDC/AAP periodontal case definition, Medicaid/CHIP dental and HRSA/FQHC policy, social determinants and oral health disparities, Healthy People 2030 oral health objectives, CDC Evaluation Framework, logic models, cost-effectiveness with QALYs, Belmont Report IRB ethics, HIPAA, and CDC dental infection control.

How should I study for this exam?

Use a 12-18 month plan layered on DPH residency. Map to the ABDPH content outline: begin with epidemiology and biostatistics, then prevention, surveillance, and disparities, then policy and program planning, then research methods and ethics. Core references include Burt & Eklund Dentistry/Dental Practice/Community, Gluck & Morganstein, Rothman's Modern Epidemiology, CDC Oral Health resources, HRSA policy briefs, ASTDD best practices, Healthy People 2030, and primary literature from Journal of Public Health Dentistry and Community Dentistry and Oral Epidemiology.