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NDEB PRACTICE EXAM AND STUDYGUIDE 2025/2026 TEST
BANK COMPLETE QUESTIONS AND 100% VERIFIED DETAILED
ANSWERS GRADED A+
Accessory canals in permanent teeth are most
commonly found in the
A. cervical third of the root.
B. middle third of the root.
C. apical third of the root.
D. bifurcation area.
E. trifurcation area.
- CORRECT ANSWER C. apical third of the root.
Which of the following is the greatest risk factor for rampant
caries in children?
A. Frequent ingestion of polysaccharides.
B. Frequent ingestion of high sucrose-containing
foods.
C. Severe enamel hypoplasia.
D. Deficiency of vitamin D.
- CORRECT ANSWER B. Frequent ingestion of high sucrose-
containing foods.
The primary function of root canal sealer is to
A. prevent discolouration of the tooth.
B. stimulate healing in the apical region.
C. medicate the canal to eliminate remaining
bacteria.
D. fill space between gutta-percha and pulp canal
wall.
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- CORRECT ANSWER D. fill space between gutta-percha and pulp
canal wall.
When performing a frenectomy, a minimal amount
of anesthetic solution is used to prevent
A. distortion of the tissues.
B. sloughing.
C. secondary bleeding.
D. irritation. - CORRECT ANSWER A. distortion of the tissues.
Acute anaphylactic reactions to penicillin are
LEAST likely to occur
A. in patients with a negative skin test to
penicillin.
B. within minutes after drug administration.
C. in patients who have already experienced an
allergic reaction to the drug.
D. when the drug is administered parenterally. - CORRECT
ANSWER A. in patients with a negative skin test to
penicillin.
The most effective way of minimizing a patient's
radiation dose is
A. a lead apron and thyroid collar.
B. prescription radiography.
C. fast emulsion film.
D. intensifying screens. - CORRECT ANSWER B. prescription
radiography.
An acute periapical abscess originating from a
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mandibular third molar generally points and drains
in the
A. submandibular space.
B. pterygomandibular space.
C. buccal vestibule.
D. buccal space. - CORRECT ANSWER A. submandibular space.
Which of the following require prophylactic antibiotics prior to
dental procedures causing a bacteremia?
A. Implanted cardiac pacemakers.
B. Prosthetic cardiac valves.
C. Coronary artery bypass grafts.
D. Cardiac stents one year after placement. - CORRECT ANSWER
B. Prosthetic cardiac valves.
Upon examination of an edentulous patient, it is
observed that the tuberosities contact the retromolar
pads at the correct occlusal vertical dimension. The
treatment of choice is to
A. reduce the retromolar pads surgically to
provide the necessary clearance.
B. reduce the tuberosities surgically to provide the
necessary clearance.
C. construct new dentures at an increased occlusal
vertical dimension to gain the necessary
clearance.
D. proceed with construction of the denture and
reduce the posterior extension of the
mandibular denture to eliminate interferences. - CORRECT
ANSWER B. reduce the tuberosities surgically to provide the
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necessary clearance.
In the absence of "Hanks balanced salt solution",
what is the most appropriate media to transport an
avulsed tooth?
A. Saliva.
B. Milk.
C. Saline.
D. Tap water. - CORRECT ANSWER B. Milk.
Which of the following improves the prognosis of
pulp vitality after indirect pulp capping?
A. Use of calcium hydroxide.
B. Having a well-sealed restoration.
C. Reducing other traumas to the pulp.
D. Removing all demineralized dentin. - CORRECT ANSWER B.
Having a well-sealed restoration.
In clinical dentistry, stiffness of wire is a function of
A. length of the wire segment.
B. diameter of the wire segment.
C. alloy composition.
D. All of the above.
E. None of the above. - CORRECT ANSWER D. All of the above.
The major disadvantage of zinc phosphate used to
cement crowns is the
A. development of heat during setting.
B. pulp irritation.
C. lack of edge strength.
NDEB PRACTICE EXAM AND STUDYGUIDE 2025/2026 TEST
BANK COMPLETE QUESTIONS AND 100% VERIFIED DETAILED
ANSWERS GRADED A+
Accessory canals in permanent teeth are most
commonly found in the
A. cervical third of the root.
B. middle third of the root.
C. apical third of the root.
D. bifurcation area.
E. trifurcation area.
- CORRECT ANSWER C. apical third of the root.
Which of the following is the greatest risk factor for rampant
caries in children?
A. Frequent ingestion of polysaccharides.
B. Frequent ingestion of high sucrose-containing
foods.
C. Severe enamel hypoplasia.
D. Deficiency of vitamin D.
- CORRECT ANSWER B. Frequent ingestion of high sucrose-
containing foods.
The primary function of root canal sealer is to
A. prevent discolouration of the tooth.
B. stimulate healing in the apical region.
C. medicate the canal to eliminate remaining
bacteria.
D. fill space between gutta-percha and pulp canal
wall.
,2|Page
- CORRECT ANSWER D. fill space between gutta-percha and pulp
canal wall.
When performing a frenectomy, a minimal amount
of anesthetic solution is used to prevent
A. distortion of the tissues.
B. sloughing.
C. secondary bleeding.
D. irritation. - CORRECT ANSWER A. distortion of the tissues.
Acute anaphylactic reactions to penicillin are
LEAST likely to occur
A. in patients with a negative skin test to
penicillin.
B. within minutes after drug administration.
C. in patients who have already experienced an
allergic reaction to the drug.
D. when the drug is administered parenterally. - CORRECT
ANSWER A. in patients with a negative skin test to
penicillin.
The most effective way of minimizing a patient's
radiation dose is
A. a lead apron and thyroid collar.
B. prescription radiography.
C. fast emulsion film.
D. intensifying screens. - CORRECT ANSWER B. prescription
radiography.
An acute periapical abscess originating from a
,3|Page
mandibular third molar generally points and drains
in the
A. submandibular space.
B. pterygomandibular space.
C. buccal vestibule.
D. buccal space. - CORRECT ANSWER A. submandibular space.
Which of the following require prophylactic antibiotics prior to
dental procedures causing a bacteremia?
A. Implanted cardiac pacemakers.
B. Prosthetic cardiac valves.
C. Coronary artery bypass grafts.
D. Cardiac stents one year after placement. - CORRECT ANSWER
B. Prosthetic cardiac valves.
Upon examination of an edentulous patient, it is
observed that the tuberosities contact the retromolar
pads at the correct occlusal vertical dimension. The
treatment of choice is to
A. reduce the retromolar pads surgically to
provide the necessary clearance.
B. reduce the tuberosities surgically to provide the
necessary clearance.
C. construct new dentures at an increased occlusal
vertical dimension to gain the necessary
clearance.
D. proceed with construction of the denture and
reduce the posterior extension of the
mandibular denture to eliminate interferences. - CORRECT
ANSWER B. reduce the tuberosities surgically to provide the
, 4|Page
necessary clearance.
In the absence of "Hanks balanced salt solution",
what is the most appropriate media to transport an
avulsed tooth?
A. Saliva.
B. Milk.
C. Saline.
D. Tap water. - CORRECT ANSWER B. Milk.
Which of the following improves the prognosis of
pulp vitality after indirect pulp capping?
A. Use of calcium hydroxide.
B. Having a well-sealed restoration.
C. Reducing other traumas to the pulp.
D. Removing all demineralized dentin. - CORRECT ANSWER B.
Having a well-sealed restoration.
In clinical dentistry, stiffness of wire is a function of
A. length of the wire segment.
B. diameter of the wire segment.
C. alloy composition.
D. All of the above.
E. None of the above. - CORRECT ANSWER D. All of the above.
The major disadvantage of zinc phosphate used to
cement crowns is the
A. development of heat during setting.
B. pulp irritation.
C. lack of edge strength.
