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Sample DOH Dentist Exam Practice Questions

Try these sample questions to review concepts for the DOH Dentist Exam exam. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1A patient presents with a mesio-occlusal cavity on tooth 36 (FDI notation). Which tooth does FDI 36 identify?
A.Permanent mandibular left first molar
B.Permanent maxillary left first molar
C.Permanent mandibular right first molar
D.Primary mandibular left first molar
Explanation: In the FDI two-digit system used on the DOH exam, the first digit is the quadrant and the second is the tooth position. Quadrant 3 is the permanent mandibular left, and position 6 is the first molar, so 36 is the permanent mandibular left first molar.
2When placing a posterior composite restoration, why is incremental layering (oblique increments of approximately 2 mm) recommended?
A.It increases the working time of the bonding agent
B.It reduces polymerization shrinkage stress and improves depth of cure
C.It eliminates the need for a rubber dam
D.It removes the need for acid etching of enamel
Explanation: Light-cured composite shrinks toward the curing light and generates contraction stress at the tooth-restoration interface. Placing oblique increments of about 2 mm limits the C-factor effect, reduces cuspal deflection and microleakage, and ensures the curing light penetrates adequately for a proper depth of cure.
3A glass ionomer cement is selected to restore a cervical lesion in a patient with high caries risk. Which property makes glass ionomer particularly suitable here?
A.High compressive strength exceeding amalgam
B.Superior esthetics matching enamel translucency
C.Sustained fluoride release and chemical bonding to dentin
D.Complete insolubility immediately after placement
Explanation: Glass ionomer cement chemically bonds to tooth structure through ion exchange and releases fluoride over time, which helps remineralize adjacent tooth structure and reduce recurrent caries. This makes it valuable for high-caries-risk patients and cervical lesions where moisture control is difficult.
4According to G.V. Black's classification, a carious lesion involving the proximal surface of an anterior tooth WITHOUT involvement of the incisal angle is classified as which class?
A.Class II
B.Class IV
C.Class V
D.Class III
Explanation: Class III lesions involve the proximal surfaces of incisors and canines without involving the incisal angle. Once the incisal angle is involved, the lesion becomes Class IV.
5A self-etch (one-step) adhesive system differs from a total-etch system primarily because it:
A.Does not require any phosphoric acid rinse step
B.Provides stronger enamel bonds than total-etch
C.Cannot be used on dentin
D.Requires a separate desensitizer before use
Explanation: Self-etch adhesives contain acidic monomers that simultaneously etch and prime the tooth surface, eliminating the separate phosphoric acid etch-and-rinse step. This reduces technique sensitivity and post-operative sensitivity on dentin, although enamel bonding may be weaker than with total-etch.
6A patient reports sharp sensitivity to cold on tooth 24 that resolves within a few seconds of stimulus removal. There is no spontaneous pain and the tooth responds normally to percussion. What is the most likely pulpal diagnosis?
A.Symptomatic irreversible pulpitis
B.Reversible pulpitis
C.Pulp necrosis
D.Acute apical abscess
Explanation: Pain that is sharp, provoked by cold, and resolves quickly after the stimulus is removed, with no spontaneous or lingering pain, is the classic presentation of reversible pulpitis. The pulp is inflamed but capable of healing once the irritant (often caries or exposed dentin) is addressed.
7What is the primary clinical purpose of placing a rubber dam during operative and endodontic procedures?
A.To increase the bond strength of composite to enamel
B.To replace local anesthesia for pain control
C.To provide moisture control, retraction, and protection against aspiration
D.To accelerate the setting of dental amalgam
Explanation: The rubber dam isolates the operating field from saliva and moisture, retracts soft tissues, improves visibility and access, and protects the patient against aspiration or swallowing of instruments and irrigants. It is the standard of care for adhesive and endodontic procedures.
8A patient needs an all-ceramic crown on a maxillary central incisor where esthetics is the top priority. Which material offers the BEST combination of esthetics and adequate strength for an anterior single crown?
A.Type III gold alloy
B.Feldspathic porcelain fused to a base-metal alloy with a metal collar
C.Conventional silver amalgam
D.Lithium disilicate glass-ceramic
Explanation: Lithium disilicate (e.g., pressed or CAD/CAM) provides excellent translucency and esthetics for anterior crowns while offering flexural strength around 360-400 MPa, which is sufficient for single anterior restorations. It is a leading choice when esthetics is paramount.
9During preparation for a full-coverage porcelain-fused-to-metal crown, what is the main reason a chamfer or shoulder finish line is created at the gingival margin?
A.To provide a defined margin for the restoration and adequate bulk of material
B.To eliminate the need for a provisional crown
C.To increase pulpal blood flow
D.To avoid the need for impressions
Explanation: A definite finish line such as a chamfer or shoulder gives the laboratory a clear margin to follow, ensures adequate thickness of crown material at the margin for strength and esthetics, and improves marginal fit and seal. The choice of margin design depends on the restorative material.
10A complete denture patient complains of generalized soreness and a burning sensation under the maxillary denture, with a red, smooth, swollen palatal mucosa conforming to the denture outline. What is the most likely diagnosis?
A.Squamous cell carcinoma
B.Denture-related stomatitis (Candida-associated)
C.Lichen planus
D.Geographic tongue
Explanation: Denture-related stomatitis (Newton's classification) is a Candida-associated inflammation of the denture-bearing mucosa, presenting as erythema confined to the area covered by the denture. Management includes denture hygiene, leaving the denture out at night, and antifungal therapy if needed.

About the DOH Dentist Exam Exam

The DOH Abu Dhabi Dentist Qualification Exam (formerly the HAAD exam) is the mandatory licensing assessment for dentists who wish to practice in the emirate of Abu Dhabi and Al Ain. It is a Pearson VUE computer-based test of single-best-answer MCQs covering core clinical dentistry. Eligibility requires a recognized dental degree, clinical experience, and DataFlow primary source verification.

Exam sponsor: Department of Health Abu Dhabi (DOH, formerly HAAD). The requirements and fees below concern the certification or admission exam, separate from our free practice resources.

Assessment

Computer-based single-best-answer MCQs (4 options) delivered through Pearson VUE, covering clinical dentistry across restorative, prosthodontic, surgical, periodontal, endodontic, orthodontic and pediatric domains.

Time Limit

Approximately 2 to 2.5 hours (120-150 minutes); some dentist categories report up to 3 hours.

Passing Score

Not formally published by DOH; reported candidate pass threshold is approximately 60-65% correct, with no negative marking. The required score can vary by profession and country of qualification.

Exam / Certification Fees

DOH CBT pre-booking fee approx. AED 100 for dentists plus a Pearson VUE fee of approx. USD 73.57 (Abu Dhabi) to USD 94.59 (international). DataFlow primary source verification (approx. AED 1,260 for general dentists) is paid separately. Fees set by DOH and subject to change.

Exam sponsor website

Fees, eligibility, and exam policies can change. Confirm them with the exam sponsor before applying or paying.

Our practice resources: topics covered

We aim to reflect publicly available exam outlines and topic information in our study resources. Coverage, format, and difficulty may differ from the actual exam, and we cannot guarantee that every detail is accurate or current. Confirm exam requirements, fees, and policies with the official exam sponsor.

30%

Restorative & Operative Dentistry

Dental materials, composite and amalgam, caries diagnosis and management, adhesion, tooth-wear and esthetics.

20%

Prosthodontics

Crowns, bridges, complete and partial dentures, dental implants, occlusion and treatment planning.

21%

Oral Medicine & Oral Surgery

Exodontia, local anesthesia, medical emergencies, oral pathology, radiology, infection control and DOH regulations.

15%

Periodontics

Gingival and periodontal diagnosis, scaling and root debridement, periodontal-systemic links and maintenance.

8%

Endodontics

Pulpal/periapical diagnosis, canal preparation, irrigation, obturation and restoring endodontically treated teeth.

6%

Orthodontics & Pediatric Dentistry

Malocclusion, interceptive orthodontics, eruption, pediatric caries prevention, pulp therapy and trauma.

Preparing for the DOH Dentist Exam Exam

What You Need to Know

  • Passing score: Not formally published by DOH; reported candidate pass threshold is approximately 60-65% correct, with no negative marking. The required score can vary by profession and country of qualification.
  • Assessment: Computer-based single-best-answer MCQs (4 options) delivered through Pearson VUE, covering clinical dentistry across restorative, prosthodontic, surgical, periodontal, endodontic, orthodontic and pediatric domains.
  • Time limit: Approximately 2 to 2.5 hours (120-150 minutes); some dentist categories report up to 3 hours.
  • Exam / certification fees: DOH CBT pre-booking fee approx. AED 100 for dentists plus a Pearson VUE fee of approx. USD 73.57 (Abu Dhabi) to USD 94.59 (international). DataFlow primary source verification (approx. AED 1,260 for general dentists) is paid separately. Fees set by DOH and subject to change. Official sources

Using Our Practice Resources

  • Work through all 100 available questions
  • Review every answer and explanation
  • Track weak areas and revisit them
  • Use our AI tutor for tough concepts

DOH Dentist Exam: Suggested Study Strategy

1Weight your study toward the highest-yield domains: restorative/operative dentistry and prosthodontics together make up roughly half of the clinical content, followed by oral surgery and periodontics.
2Practice clinical-vignette MCQs under timed conditions to build the single-best-answer reasoning needed for the Pearson VUE format, and remember there is no negative marking so never leave a blank.
3Use the FDI two-digit tooth notation throughout your revision and review medical emergencies, drug dosing, infection control and Abu Dhabi DOH licensing/record-keeping rules, which recur on the exam.

Frequently Asked Questions

What is the DOH Abu Dhabi dentist exam?

It is the licensing examination administered by the Department of Health Abu Dhabi (formerly HAAD) that dentists must pass to be eligible to practice in Abu Dhabi and Al Ain. It is delivered as a computer-based single-best-answer MCQ test through Pearson VUE.

Who administers and delivers the DOH dentist exam?

The Department of Health Abu Dhabi (DOH) regulates and licenses the exam, while Pearson VUE delivers it at computer-based testing centers in the UAE and internationally.

What is the passing score for the DOH dentist exam?

DOH does not publish a fixed official pass percentage. Based on candidate reports the threshold is approximately 60-65% correct answers, and it can vary by profession and country of qualification. There is no negative marking, so every question should be attempted.

How many questions are on the DOH dentist exam?

The exact count is not officially published. Prep sources commonly report approximately 100 single-best-answer MCQs for the DOH general dentist exam, with some categories reporting up to 150 questions, completed within roughly 2 to 3 hours.