INBDE DENTAL EXAM Practice Questions And Correct Answers (Verified Answers) Plus Rationales 2026 Q&A |
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Core Domains
Oral Anatomy and Histology
Oral Pathology and Medicine
Pharmacology and Therapeutics
Preventive Dentistry and Public Health
Endodontics and Restorative Dentistry
Periodontics and Implantology
Orthodontics and Growth & Development
Prosthodontics (Fixed and Removable)
Radiology and Imaging Interpretation
Ethics, Jurisprudence, and Patient Management
Introduction
,This comprehensive assessment is designed to prepare candidates for the Integrated National Board Dental
Examination (INBDE). It evaluates foundational biomedical knowledge, clinical decision-making, and the
application of evidence-based dentistry. The exam includes multiple-choice questions and scenario-based items
that simulate real patient encounters. Each question tests the ability to integrate basic sciences with clinical
practice, emphasizing diagnosis, treatment planning, pharmacological management, and ethical considerations.
Success requires not only recall but also critical thinking, problem-solving, and adherence to professional
standards. This resource mirrors the actual exam’s rigor and structure, ensuring readiness for licensure.
SECTION ONE: QUESTIONS 1–100
Question 1
Which of the following is the most critical factor in determining the prognosis of a tooth with a complete
crown-root fracture extending subgingivally?
A. The extent of pulpal involvement
B. The patient’s age and healing capacity
C. The remaining coronal tooth structure
D. The depth of the fracture relative to the attachment level
,🟢D
🔴 RATIONALE: The depth of the fracture relative to the epithelial attachment and crestal bone determines
whether restorative access and biologic width maintenance are possible. Fractures extending more than 3–4
mm subgingivally often require crown lengthening or extraction.
Question 2
A 45-year-old patient with a history of IV bisphosphonate use for osteoporosis presents with a non-healing
extraction socket of 8 weeks. Which of the following is the most appropriate next step?
A. Prescribe a 7-day course of amoxicillin
B. Perform debridement and primary closure
C. Obtain a panoramic radiograph and refer to an oral surgeon
D. Irrigate with chlorhexidine and recall in 4 weeks
🟢C
🔴 RATIONALE: Medication-related osteonecrosis of the jaw (MRONJ) is a risk with bisphosphonates. Imaging
and specialist referral are required for staging and management; debridement may worsen the condition.
Question 3
, Which of the following local anesthetic agents is most likely to cause methemoglobinemia when administered
in high doses?
A. Lidocaine
B. Mepivacaine
C. Articaine
D. Prilocaine
🟢D
🔴 RATIONALE: Prilocaine’s metabolite o-toluidine can oxidize hemoglobin to methemoglobin. This is dose-
dependent and more common with prilocaine than other amide anesthetics.
Question 4
A 30-year-old patient presents with bilateral, painless swellings of the posterior mandible on panoramic
radiograph showing multilocular radiolucencies. The patient has a family history of similar findings. Which of the
following is the most likely diagnosis?
A. Cherubism
B. Central giant cell granuloma
Instant Download Pdf.
Core Domains
Oral Anatomy and Histology
Oral Pathology and Medicine
Pharmacology and Therapeutics
Preventive Dentistry and Public Health
Endodontics and Restorative Dentistry
Periodontics and Implantology
Orthodontics and Growth & Development
Prosthodontics (Fixed and Removable)
Radiology and Imaging Interpretation
Ethics, Jurisprudence, and Patient Management
Introduction
,This comprehensive assessment is designed to prepare candidates for the Integrated National Board Dental
Examination (INBDE). It evaluates foundational biomedical knowledge, clinical decision-making, and the
application of evidence-based dentistry. The exam includes multiple-choice questions and scenario-based items
that simulate real patient encounters. Each question tests the ability to integrate basic sciences with clinical
practice, emphasizing diagnosis, treatment planning, pharmacological management, and ethical considerations.
Success requires not only recall but also critical thinking, problem-solving, and adherence to professional
standards. This resource mirrors the actual exam’s rigor and structure, ensuring readiness for licensure.
SECTION ONE: QUESTIONS 1–100
Question 1
Which of the following is the most critical factor in determining the prognosis of a tooth with a complete
crown-root fracture extending subgingivally?
A. The extent of pulpal involvement
B. The patient’s age and healing capacity
C. The remaining coronal tooth structure
D. The depth of the fracture relative to the attachment level
,🟢D
🔴 RATIONALE: The depth of the fracture relative to the epithelial attachment and crestal bone determines
whether restorative access and biologic width maintenance are possible. Fractures extending more than 3–4
mm subgingivally often require crown lengthening or extraction.
Question 2
A 45-year-old patient with a history of IV bisphosphonate use for osteoporosis presents with a non-healing
extraction socket of 8 weeks. Which of the following is the most appropriate next step?
A. Prescribe a 7-day course of amoxicillin
B. Perform debridement and primary closure
C. Obtain a panoramic radiograph and refer to an oral surgeon
D. Irrigate with chlorhexidine and recall in 4 weeks
🟢C
🔴 RATIONALE: Medication-related osteonecrosis of the jaw (MRONJ) is a risk with bisphosphonates. Imaging
and specialist referral are required for staging and management; debridement may worsen the condition.
Question 3
, Which of the following local anesthetic agents is most likely to cause methemoglobinemia when administered
in high doses?
A. Lidocaine
B. Mepivacaine
C. Articaine
D. Prilocaine
🟢D
🔴 RATIONALE: Prilocaine’s metabolite o-toluidine can oxidize hemoglobin to methemoglobin. This is dose-
dependent and more common with prilocaine than other amide anesthetics.
Question 4
A 30-year-old patient presents with bilateral, painless swellings of the posterior mandible on panoramic
radiograph showing multilocular radiolucencies. The patient has a family history of similar findings. Which of the
following is the most likely diagnosis?
A. Cherubism
B. Central giant cell granuloma
