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100+ Free NHRA Dentist Exam Practice Questions

Pass your NHRA Licensure Examination - Dentist (CBT via Prometric) exam on the first try — instant access, no signup required.

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What is the principal indication for indirect pulp capping rather than direct pulp capping?

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Sample NHRA Dentist Exam Practice Questions

Try these sample questions to test your NHRA 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 28-year-old presents with a deep occlusal carious lesion on a mandibular first molar. After caries removal, a small pinpoint exposure of vital pulp occurs in an asymptomatic tooth with a clean operative field. What is the most appropriate management?
A.Pulpectomy and root canal therapy
B.Direct pulp cap with calcium hydroxide or MTA and restore
C.Indirect pulp cap and review in 6 months
D.Extraction of the tooth
Explanation: A small mechanical or carious pinpoint exposure of a vital, asymptomatic pulp with good isolation is best managed by direct pulp capping using MTA or calcium hydroxide, which promotes reparative dentin and dentin-bridge formation before final restoration.
2Which property of glass ionomer cement makes it especially useful for restoring cervical lesions in high-caries-risk patients?
A.High compressive strength exceeding amalgam
B.Complete insolubility in the oral environment
C.Superior esthetics matching composite resin
D.Sustained fluoride release and chemical bonding to tooth structure
Explanation: Glass ionomer cement chemically bonds to enamel and dentin via ion exchange and releases fluoride over time, which helps prevent recurrent caries, making it valuable for high-risk patients and cervical lesions.
3A patient reports lingering pain to cold lasting several minutes and spontaneous nocturnal pain in a mandibular molar with a deep restoration. The tooth responds to the electric pulp tester. What is the most likely pulpal diagnosis?
A.Symptomatic irreversible pulpitis
B.Reversible pulpitis
C.Pulp necrosis
D.Normal pulp
Explanation: Lingering pain after a thermal stimulus plus spontaneous and nocturnal pain in a tooth that still responds to vitality testing characterizes symptomatic irreversible pulpitis, which requires root canal therapy or extraction.
4During root canal treatment of a maxillary first molar, which canal is most frequently missed and should be specifically searched for in the mesiobuccal root?
A.Second distobuccal canal
B.MB2 (second mesiobuccal) canal
C.Second palatal canal
D.Fourth distal canal
Explanation: The mesiobuccal root of the maxillary first molar very commonly contains a second canal (MB2), located palatal to the main MB canal. Failure to locate and treat MB2 is a leading cause of endodontic failure in these teeth.
5What is the primary purpose of using sodium hypochlorite (NaOCl) as an irrigant during root canal therapy?
A.To dissolve organic tissue and disinfect the canal system
B.To remove the smear layer of inorganic debris
C.To chelate calcium and soften dentin walls
D.To lubricate files and prevent fracture
Explanation: Sodium hypochlorite is the gold-standard root canal irrigant because it dissolves organic pulp tissue and necrotic debris and has broad antimicrobial action against canal pathogens, including biofilms.
6A maxillary central incisor that suffered trauma 2 years ago is now discolored grey and gives no response to cold or electric pulp testing. Periapical radiograph shows a well-defined radiolucency at the apex. What is the diagnosis?
A.Reversible pulpitis
B.Pulp necrosis with chronic apical periodontitis
C.Pulp necrosis with symptomatic apical periodontitis
D.Condensing osteitis
Explanation: A non-responsive, discolored tooth with a well-defined periapical radiolucency and no symptoms indicates pulp necrosis with chronic (asymptomatic) apical periodontitis, requiring root canal treatment.
7According to the principles of cavity preparation, what is the main reason for placing a bevel on the enamel margins of a Class IV composite restoration?
A.To increase the bulk of restorative material
B.To reduce polymerization shrinkage stress
C.To create mechanical undercuts for retention
D.To expose enamel rod ends and improve bond strength and esthetic blend
Explanation: Beveling enamel margins exposes the ends of enamel rods, increasing the surface area for etching and bonding and producing a gradual shade transition that improves marginal seal and esthetics in Class IV composites.
8A working length radiograph shows the file 3 mm short of the radiographic apex in a canal. The apical constriction is typically located approximately how far from the radiographic apex?
A.0.5 to 1.0 mm short of the radiographic apex
B.At the radiographic apex exactly
C.3 to 4 mm short of the radiographic apex
D.1 mm beyond the radiographic apex
Explanation: The apical constriction (minor apical diameter), the ideal endpoint of canal preparation, lies roughly 0.5 to 1.0 mm short of the radiographic apex, because the apical foramen usually exits the root slightly before the anatomic tip.
9Which material is the current standard for sealing furcation perforations and performing apexification because of its biocompatibility and ability to set in the presence of moisture?
A.Zinc oxide eugenol
B.Amalgam
C.Mineral trioxide aggregate (MTA)
D.Gutta-percha
Explanation: MTA is biocompatible, sets in a moist environment, seals well, and stimulates hard-tissue formation, making it the preferred material for perforation repair, apexification, and root-end filling.
10A patient presents with a sharp, well-localized pain when biting on a maxillary premolar that disappears immediately on release of pressure. There is no caries and the tooth is vital. What is the most likely diagnosis?
A.Acute apical abscess
B.Cracked tooth syndrome
C.Symptomatic irreversible pulpitis
D.Lateral periodontal abscess
Explanation: Sharp pain on biting that is relieved on release (rebound pain) in a vital tooth without obvious caries is the classic presentation of cracked tooth syndrome, where a crack flexes under load and irritates the pulp/dentin.

About the NHRA Dentist Exam Exam

The NHRA Licensure Examination for Dentists is the mandatory computer-based test, delivered via Prometric, that a general dentist must pass to be licensed in the Kingdom of Bahrain. It assesses clinical dentistry across restorative, endodontic, surgical, prosthetic, periodontal, pediatric and orthodontic domains, plus Bahrain regulatory and infection-control standards.

Assessment

Single computer-based paper of single-best-answer MCQs covering general dentistry, with clinically oriented and image/radiograph-based scenarios. No negative marking.

Time Limit

3 hours (180 minutes)

Passing Score

60% (accepted benchmark; NHRA reports results as Pass/Fail).

Exam Fee

Prometric exam fee approximately USD 140-190 per attempt, plus NHRA application fee and DataFlow verification; confirm current amounts with NHRA and Prometric. (Bahrain National Health Regulatory Authority (NHRA))

NHRA Dentist Exam Exam Content Outline

25%

Restorative Dentistry & Endodontics

Operative dentistry, dental materials, caries management, pulp and periapical diagnosis, root canal therapy, and dental trauma.

20%

Oral & Maxillofacial Surgery

Exodontia, local anesthesia and dosing, extraction complications, impacted third molars, and medically compromised patients.

15%

Periodontics

Periodontal classification, etiology and risk factors, non-surgical and surgical therapy, and supportive maintenance.

15%

Prosthodontics

Fixed and removable prosthodontics, complete and partial dentures, crown and bridge, and occlusion.

10%

Pediatric Dentistry

Behavior management, primary-tooth pulp therapy, space maintenance, and preventive and fluoride care.

10%

Orthodontics

Growth and development, malocclusion classification, diagnostic records, and interceptive orthodontics.

5%

Basic Sciences, Oral Medicine, Pathology & Bahrain Regulations

Oral pathology and medicine, pharmacology, infection control, ethics, and NHRA licensure and registration rules.

How to Pass the NHRA Dentist Exam Exam

What You Need to Know

  • Passing score: 60% (accepted benchmark; NHRA reports results as Pass/Fail).
  • Assessment: Single computer-based paper of single-best-answer MCQs covering general dentistry, with clinically oriented and image/radiograph-based scenarios. No negative marking.
  • Time limit: 3 hours (180 minutes)
  • Exam fee: Prometric exam fee approximately USD 140-190 per attempt, plus NHRA application fee and DataFlow verification; confirm current amounts with NHRA and Prometric.

Keys to Passing

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

NHRA Dentist Exam Study Tips from Top Performers

1Weight your study toward restorative dentistry, endodontics, and oral surgery, which together carry the largest share of the blueprint.
2Practice single-best-answer clinical and radiograph-based scenarios under timed conditions to build the pacing needed for 150 questions in 3 hours.
3Review Bahrain-specific licensure, infection-control, and ethics requirements, and complete DataFlow primary source verification early in the application process.

Frequently Asked Questions

How many questions are on the NHRA Dentist exam and how long is it?

Prometric preparation sources report 150 single-best-answer multiple-choice questions delivered over 3 hours (180 minutes) at a Prometric computer-based testing center. NHRA does not publish the exact count on its official website, so candidates should confirm details after eligibility approval.

What is the passing score for the NHRA Dentist licensure exam?

The widely accepted pass benchmark for NHRA licensure examinations is 60%, with results commonly reported as Pass or Fail. NHRA does not publish an official percentage, so aiming well above 60% on mock tests is advised.

Who administers the NHRA Dentist exam and where can it be taken?

The exam is set by Bahrain's National Health Regulatory Authority (NHRA) and delivered through Prometric computer-based testing centers in Bahrain and internationally. Candidates apply via the NHRA system, receive an eligibility code, and then book through Prometric.

What topics are covered on the NHRA Dentist exam?

Content spans restorative dentistry and endodontics, oral and maxillofacial surgery, periodontics, prosthodontics, pediatric dentistry, orthodontics, plus oral medicine, pathology, pharmacology, infection control, and Bahrain regulations. NHRA references are largely extracted from SCFHS sources.