NDEB EXAM, PRACTICE EXAM AND

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NDEB EXAM, PRACTICE EXAM AND

STUDYGUIDE NEWEST 2025 ACTUAL EXAM

COMPLETE QUESTIONS AND CORRECT

DETAILED ANSWERS (VERIFIED ANSWERS)

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NDEB EXAM

The smear layer present on the root canal wall after cleaning and shaping is best removed by using

A. EDTA.

• hydrogen peroxide.
• chlorhexidine.
• isopropyl alcohol. - ANSWER-A. EDTA.

The primary etiological factor associated with periodontal disease is

• bacterial plaque.
• calculus.
• diabetes mellitus. 1 / 4

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• tooth mobility.
• smoking. - ANSWER-A. bacterial plaque.

Odontoblast gap junctions

• adhere the cells to one another.
• attach the cells to the basement membrane.
• seal off the dentin from the pulp.
• permit lateral cell-cell communication. - ANSWER-D. permit

lateral cell-cell communication.

The inorganic ion that is implicated in primary hypertension is

• sodium.
• fluoride.
• potassium.
• magnesium. - ANSWER-A. sodium.

Which type of malocclusion should be corrected as early as possible?

• Class II Division 1 associated with an anterior 2 / 4

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open bite.

• Class II Division 2 associated with an

increased anterior overbite.

• Class III associated with an anterior open bite.
• Cross-bite associated with a functional shift of

the mandible from initial contact to maximum intercuspation.

• Anterior open bite associated with a lip or digit

sucking habit. - ANSWER-D. Cross-bite associated with a functional shift of the mandible from initial contact to maximum intercuspation.

A patient with complete dentures complains of clicking. The most common causes are

• reduced vertical dimension and improperly

balanced occlusion.

• excessive vertical dimension and poor

retention.

• use of too large a posterior tooth and too little

horizontal overlap.

• improper relation of teeth to the ridge and 3 / 4

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excessive anterior vertical overlap. - ANSWER-B. excessive vertical dimension and poor retention.

Ideally, within how many hours should one receive medical attention for percutaneous exposure to blood borne pathogens?

• 2.
• 4.
• 6.

D. 8. - ANSWER-A. 2.

Which of the following drugs does NOT cause gingival enlargement?

• Nifedipine.
• Cyclosporine.
• Phenytoin.
• Prednisolone. - ANSWER-D. Prednisolone.

The maximum recommended number of 1.8ml

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