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100+ Free DHA Dentist Exam Practice Questions

Pass your DHA Dentist Licensing Assessment (CBT via Prometric) exam on the first try — instant access, no signup required.

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Which of the following best describes the rationale for placing a post in an endodontically treated tooth?

A
B
C
D
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Sample DHA Dentist Exam Practice Questions

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

1A patient needs a Class II composite restoration on tooth 36 (FDI). To control polymerization shrinkage stress in the proximal box, which placement technique is most appropriate?
A.Incremental placement in oblique layers no thicker than 2 mm each
B.Bulk placement of a single 5 mm increment cured for 40 seconds
C.Placing the entire restoration with a flowable composite only
D.Curing each increment for 5 seconds to reduce stress
Explanation: Incremental layering with increments no thicker than 2 mm allows adequate light penetration and reduces the configuration (C-) factor and cumulative shrinkage stress at the gingival margin. This minimizes cuspal deflection and marginal gaps in conventional (non-bulk-fill) composites.
2Which dental amalgam property is most directly improved by using a high-copper (>6%) alloy compared with a conventional low-copper alloy?
A.Reduced setting time
B.Increased thermal conductivity
C.Elimination of the weak gamma-2 (tin-mercury) phase
D.Lower compressive strength
Explanation: High-copper amalgams largely eliminate the gamma-2 (Sn7-8Hg) phase, which is the weakest and most corrosion-prone component of set amalgam. Removing gamma-2 improves corrosion resistance, marginal integrity, and overall strength.
3When preparing a tooth for a full-coverage all-ceramic crown, what is the recommended minimum total occlusal convergence (taper) per wall to achieve adequate retention and resistance form?
A.About 2 to 6 degrees
B.About 15 to 20 degrees
C.About 25 to 30 degrees
D.About 40 degrees
Explanation: An axial wall taper of roughly 2-6 degrees per wall (about 6-12 degrees total convergence) provides optimal retention and resistance while still allowing the restoration to seat. Excessive taper dramatically reduces retention.
4A patient presents with generalized attrition and reduced occlusal vertical dimension from bruxism, requiring full-mouth rehabilitation. Before delivering definitive crowns, which step is most important to evaluate the proposed new vertical dimension?
A.Immediate cementation of definitive zirconia crowns
B.Permanent bonding without any provisional phase
C.Endodontic treatment of all posterior teeth
D.A trial period with a provisional restoration or occlusal splint at the new vertical dimension
Explanation: A reversible provisional/splint phase at the proposed occlusal vertical dimension lets the clinician confirm patient comfort, phonetics, esthetics, and muscle adaptation before committing to irreversible definitive restorations. This reduces the risk of TMD symptoms after rehabilitation.
5Which impression material is most appropriate for a final fixed-prosthodontic impression because of its excellent dimensional stability and high tear strength?
A.Irreversible hydrocolloid (alginate)
B.Polyvinyl siloxane (addition silicone)
C.Impression compound
D.Zinc oxide eugenol paste
Explanation: Polyvinyl siloxane (PVS/addition silicone) offers outstanding dimensional stability over time, high accuracy, and good tear strength, making it ideal for crown and bridge final impressions. Casts can be poured later without significant distortion.
6A complete-denture patient complains that the lower denture lifts when opening wide and speaking. The borders appear overextended in the retromylohyoid and distolingual regions. What is the most appropriate corrective action?
A.Adjust and reduce the overextended denture borders
B.Reline the entire denture with a hard reline material
C.Add denture adhesive and dismiss the patient
D.Remake the maxillary denture
Explanation: Overextended borders that engage moving muscle attachments dislodge a lower denture during function. Identifying and selectively reducing the overextended flanges restores border seal and stability without remaking the prosthesis.
7In removable partial denture design, a Kennedy Class I arch is best described as:
A.A single edentulous area not bounded by natural teeth, located posterior to remaining teeth
B.An edentulous area bounded anteriorly and posteriorly by natural teeth (tooth-supported)
C.Bilateral edentulous areas located posterior to the remaining natural teeth
D.A bilateral edentulous area anterior to the remaining natural teeth
Explanation: Kennedy Class I is a bilateral free-end (distal-extension) edentulous situation, with edentulous areas posterior to the remaining natural teeth on both sides. These are tissue-and-tooth supported and require stress-release design considerations.
8A 28-year-old needs a single implant to replace tooth 11 (maxillary central incisor). Cone-beam imaging shows a thin labial bone plate. Which factor most strongly influences long-term esthetic stability of the peri-implant gingival margin?
A.Use of the widest possible diameter implant
B.Immediate loading regardless of primary stability
C.Placing the implant platform 1 mm coronal to the adjacent CEJs
D.Maintaining an adequate buccal bone thickness (ideally about 2 mm)
Explanation: An intact buccal bone wall of roughly 2 mm supports the overlying soft tissue and prevents recession after remodeling, which is critical in the esthetic zone. Inadequate buccal bone predisposes to gingival recession and grey show-through.
9Which luting cement provides chemical adhesion to tooth structure and sustained fluoride release, making it useful for cementing metal crowns in caries-prone patients?
A.Zinc phosphate cement
B.Glass ionomer cement
C.Polycarboxylate without fluoride
D.Resin cement with no fluoride filler
Explanation: Glass ionomer cement bonds chemically to enamel and dentin via ion exchange and releases fluoride over time, providing some anticariogenic benefit. This makes it a good luting choice for caries-susceptible patients.
10During tooth preparation for a posterior all-ceramic (lithium disilicate) crown, what is the recommended minimum occlusal reduction to ensure adequate material thickness and fracture resistance?
A.0.3 mm
B.0.5 mm
C.1.5 to 2.0 mm
D.3.5 mm
Explanation: Lithium disilicate posterior crowns require roughly 1.5-2.0 mm of occlusal reduction to provide enough bulk of ceramic to resist occlusal fracture. Insufficient reduction is a leading cause of all-ceramic crown failure.

About the DHA Dentist Exam Exam

The DHA Dentist Licensing Assessment is the computer-based exam dentists must pass to practice in Dubai. As of 2026 it comprises 150 single-best-answer MCQs in 170 minutes, delivered through Prometric, covering core clinical dentistry plus UAE healthcare standards.

Assessment

150 single-best-answer MCQs delivered as a computer-based test through Prometric, with a mix of recall and clinical-scenario (case-based) questions.

Time Limit

170 minutes

Passing Score

Aggregate 60% or above, AND above 60% in at least one critical area (Restorative Dentistry, Oral Medicine/Surgery, or Periodontics).

Exam Fee

AED 2,020 for general dentists (AED 2,335 specialists), VAT included, per 2025 schedule; confirm current fee on the DHA Sheryan portal. (Dubai Health (formerly DHA))

DHA Dentist Exam Exam Content Outline

31%

Prosthodontics & Operative (Restorative)

Fixed and removable prosthodontics, implants, operative dentistry, materials and occlusion (about 46 of 150 questions).

21%

Oral Medicine & Oral Surgery

Oral medicine and pathology, exodontia, medical emergencies, pharmacology and the medically compromised patient (about 31 of 150 questions).

18%

Periodontics

Periodontal diagnosis, non-surgical and surgical therapy, peri-implant disease and supportive care (about 27 of 150 questions).

17%

Orthodontics & Pediatric Dentistry

Malocclusion, growth modification, pediatric pulp therapy, trauma, prevention and space management (about 26 of 150 questions).

13%

Endodontics

Pulpal and periapical diagnosis, instrumentation, irrigation, obturation and vital pulp therapy (about 20 of 150 questions).

How to Pass the DHA Dentist Exam Exam

What You Need to Know

  • Passing score: Aggregate 60% or above, AND above 60% in at least one critical area (Restorative Dentistry, Oral Medicine/Surgery, or Periodontics).
  • Assessment: 150 single-best-answer MCQs delivered as a computer-based test through Prometric, with a mix of recall and clinical-scenario (case-based) questions.
  • Time limit: 170 minutes
  • Exam fee: AED 2,020 for general dentists (AED 2,335 specialists), VAT included, per 2025 schedule; confirm current fee on the DHA Sheryan portal.

Keys to Passing

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

DHA Dentist Exam Study Tips from Top Performers

1Weight your study toward Restorative/Prosthodontics (about a third of the exam) and Oral Medicine/Surgery, since strong performance in a critical area is required to pass.
2Practice case-based MCQs that include history, examination findings and radiographs, because the exam emphasizes clinical decision-making over pure recall.
3Master FDI two-digit tooth notation and review UAE-specific topics such as licensing rules, consent, confidentiality and infection control before test day.

Frequently Asked Questions

How many questions are on the DHA dentist exam and how long is it?

As of 2026 the DHA (Dubai Health) dentist assessment has 150 single-best-answer multiple-choice questions to be completed in 170 minutes, delivered as a computer-based test through Prometric.

What is the passing score for the DHA dentist exam?

Candidates need an aggregate score of 60% or above and, in addition, a score above 60% in at least one critical area: Restorative Dentistry, Oral Medicine/Surgery, or Periodontics.

Who administers and conducts the DHA dentist licensing exam?

The exam is owned by Dubai Health (formerly the Dubai Health Authority, DHA) and delivered by Prometric as a computer-based test. Eligibility and document verification are handled through the DHA Sheryan portal and DataFlow.

What subjects does the DHA dentist exam cover?

It covers restorative dentistry and prosthodontics, oral medicine and oral surgery, periodontics, orthodontics and pediatric dentistry, and endodontics, alongside radiology, ethics, infection control and UAE healthcare regulations, with an emphasis on clinical scenarios.