NDEB EXAM PREP LATEST 2025 ACTUAL EXAM

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NDEB EXAM PREP LATEST 2025 ACTUAL EXAM

TEST BANK| COMPLETE 600+ REAL EXAM

QUESTIONS AND CORRECT VERIFIED

ANSWERS/ ALREADY GRADED A+| NATIONAL

DENTAL EXAMINATION BOARD (CANADIAN)

EXAM PREP 2025| BRAND NEW!!

The main purpose of X-ray collimation is to

• lower the kilovoltage.
• filter out low energy X-rays.
• reduce the diameter of the primary beam.
• reduce the exposure time. - Correct Answer - C. reduce the diameter of the

primary beam.

As gingival inflammation progresses to marginal periodontitis, the associated

changes are:

• Apical migration and disintegration of the epithelial attachment.
• Resorption of the alveolar crest.
• Destruction of the alveolar crest and periodontal ligament fibers.
• All of the above.
• None of the above. - Correct Answer - D. All of the above.

For an acid-etched Class III composite resin, the Cavo surface margin of the cavity can be beveled to

• eliminate the need for internal retention.
• improve convenience form. 1 / 4

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• aid in finishing.
• increase the surface area for etching. - Correct Answer - D. increase the surface

area for etching.

The major advantage of glass ionomer cement as a restorative material is that it is

• highly translucent.
• a fluoride releasing material.
• highly esthetic.
• unaffected by moisture during the setting reaction. - Correct Answer - B. a

fluoride releasing material.

The most damaging characteristic of an Angle Class II, division 2 malocclusion is the

• deep overbite.
• crowding of the mandibular incisors.
• relationship of the molars.
• impaction of the maxillary canines.
• malposition of the maxillary lateral incisors - Correct Answer - A. deep overbite.

A lingual plate is indicated as a major connector for a removable partial denture when

• insufficient room exists for a lingual bar.
• a palatal torus is present.
• a retro mylohyoid undercut is present.
• there is a low attachment of the lingual frenum. - Correct Answer - A.

insufficient room exists for a lingual bar.

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pg. 3 Which has the WORST prognosis?

• Occlusal traumatism.
• Gingivitis.
• Aggressive periodontitis.
• Periodontal atrophy.
• Chronic periodontitis. - Correct Answer - C. Aggressive periodontitis.

In gingivitis, the initial cellular immune response predominantly involves

• T lymphocytes.
• B lymphocytes.
• neutrophils.
• plasma cells. - Correct Answer - A. T lymphocytes.

Soft, white, elevated plaques of the oral mucosa are characteristic of

• angioma.
• candidiasis.
• actinomycosis.
• herpes simplex.
• submucous fibrosis - Correct Answer - B. candidiasis.

A patient has a displaced right sub condylar fracture of the mandible. On opening, the mandible deflects to the right. Which muscle is prevented from functioning appropriately?

• Medial pterygoid.
• Temporalis.
• Masseter. 3 / 4

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• Lateral pterygoid. - Correct Answer - D. Lateral pterygoid.

Necrotizing ulcerative gingivitis (NUG) and acute herpetic gingivostomatitis can be differentiated clinically by (the)

• location of the lesions.
• temperature of the patient.
• pain.
• lymphadenopathy. - Correct Answer - A. location of the lesions.

Molecular attraction between unlike substances is called

• adhesion.
• cohesion.
• syneresis.
• absorption. - Correct Answer - A. adhesion.

Which of the following is NOT associated with Cushing disease?

• Buffalo hump.
• Osteoporosis.
• Hirsutism.
• Hypertension.
• Diabetes insipidus. - Correct Answer - E. Diabetes insipidus.

Gingival bleeding associated with plaque induced gingivitis is due to

• a vitamin C deficiency.
• destruction of vessels of the periodontal ligament.
• excessive pocket depth.
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