NDEB Exam LATEST NDEB Solved Questions and
Correct Answers
The principal reason for a cavosurface bevel on an
d d d d d d d d
inlay preparation is to
d d d d
A. remove undermined enamel. d d
B. improve marginal adaptation. d d
C. decrease marginal percolation. d d
D. increase resistance and retention forms. - Answer - B. improve marginal adaptation.
d d d d d d d d d d d
Lichen planus occurs most frequently on the
d d d d d d
A. buccal mucosa. d
B. tongue.
C. floor of the mouth. d d d
D. gingiva. - Answer - A. buccal mucosa. d d d d d d
The pulpal floor of a Class II cavity is cut perpendicular
d d d d d d d d d d
to the long axis of the tooth EXCEPT in the
d d d d d d d d d d
A. maxillary first premolar. d d
B. maxillary second premolar. d d
C. mandibular second premolar. d d
D. mandibular first premolar. - Answer - D. mandibular first premolar. d d d d d d d d d
Upon examination of an edentulous patient, it is
d d d d d d d
observed that the tuberosities contact the retromolar
d d d d d d d
pads at the correct occlusal vertical dimension. The
d d d d d d d d
treatment of choice is to
d d d d d
A. reduce the retromolar pads surgically to
d d d d d
provide the necessary clearance.
d d d d
B. reduce the tuberosities surgically to provide the
d d d d d d
necessary clearance.
d d
C. construct new dentures at an increased occlusal d d d d d d
vertical dimension to gain the necessary clearance.
d d d d d d d
D. proceed with construction of the denture and d d d d d d
reduce the posterior extension of the
d d d d d d
mandibular denture to eliminate interferences. - Answer - B. reduce the tuberosities
d d d d d d d d d d d
surgically to provide the
d d d d
,necessary clearance. d
In the absence of "Hanks balanced salt solution", what
d d d d d d d d
is the most appropriate media to transport an avulsed
d d d d d d d d d
tooth?
d
A. Saliva.
B. Milk.
C. Saline.
D. Tap water. - Answer - B. Milk.
d d d d d d
The setting of a zinc-phosphate cement can best be
d d d d d d d d
retarded by
d d
A. decreasing the particle size. d d d
B. increasing the concentration of water in the d d d d d d
liquid.
d
C. increasing the rate of addition of the powder to d d d d d d d d
the liquid.
d d
D. cooling the glass mixing slab. - Answer - D. cooling the glass mixing slab.
d d d d d d d d d d d d d
What is the most likely diagnosis of a white lesion on
d d d d d d d d d d
the retromolar pad opposing a non-functional
d d d d d d
molar?
d
A. Alveolar ridge keratosis. d d
B. Candidiasis.
C. Lichen planus. d
D. Squamous cell carcinoma - Answer - A. Alveolar ridge keratosis d d d d d d d d d
Which of the following is the most likely cause of
d d d d d d d d d
osteoporosis, glaucoma, hypertension and peptic
d d d d d
ulcers in a 65 year old with Crohn's disease?
d d d d d d d d d
A. Uncontrolled diabetes. d
B. Systemic corticosteroid therapy. d d
C. Chronic renal failure. d d
D. Prolonged NSAID therapy. d d
E. Malabsorption syndrome. - Answer - B. Systemic corticosteroid therapy. d d d d d d d d
A hinge axis facebow records
d d d d
A. Bennett angle. d
B. centric relation. d
C. lateral condylar inclination. d d
,D. horizontal condylar inclination. d d
E. opening and closing axis of the mandible. - Answer - E. opening and closing axis of the
d d d d d d d d d d d d d d d d
mandible.
d
The most important objective of occlusal adjustment of
d d d d d d d
a natural dentition is to
d d d d d
A. prevent temporomandibular joint syndrome. d d d
B. increase the shearing action in mastication. d d d d d
C. improve oral hygiene by preventing food d d d d d
impaction.
d
D. achieve a more favorable direction and d d d d d
distribution of forces of occlusion. - Answer - D. achieve a more favorable direction and
d d d d d d d d d d d d d d
distribution of forces of occlusion.
d d d d d
Which condition has NOT been associated with
d d d d d d
Candida albicans infection?
d d d
A. Median rhomboid glossitis. d d
B. Angular cheilitis. d
C. Denture stomatitis. d
D. Aphthous ulcerations. d
E. Oral hairy leukoplakia. - Answer - D. Aphthous ulcerations.
d d d d d d d d
Which of the following is essential for successful
d d d d d d d
periodontal treatment?
d d
A. Scaling.
B. Final evaluation and maintenance on a oneyear
d d d d d d
recall.
d
C. Periodontal flap surgery. d d
D. Elimination of local etiologic factors. - Answer - D. Elimination of local etiologic d d d d d d d d d d d d
factors.
d
If a complete mandibular denture causes a burning
d d d d d d d
sensation in the premolar region, this is due to the
d d d d d d d d d d
denture exerting pressure in/on the
d d d d d
A. fibres of the buccinator muscle. d d d d
B. lingual branch of the mandibular division of d d d d d d
the trigeminal nerve.
d d d
C. underlying bone. d
D. mental branch of the inferior alveolar nerve. d d d d d d
E. buccal frenum area. - Answer - D. mental branch of the inferior alveolar nerve.
d d d d d d d d d d d d d
, A hinge axis facebow records
d d d d
A. Bennett angle. d
B. centric relation. d
C. lateral condylar inclination. d d
D. horizontal condylar inclination. d d
E. opening and closing axis of the mandible. - Answer - E. opening and closing axis of the
d d d d d d d d d d d d d d d d
mandible.
d
Which of the following microorganisms are most
d d d d d d
frequently found in infected root canals?
d d d d d d
A. Streptococcus viridans. d
B. Staphylococcus aureus. d
C. Lactobacilli.
D. Enterococci.
E. Staphylococcus albus. - Answer - A. Streptococcus viridans. d d d d d d d
The predominant type of movement produced by a
d d d d d d d
finger spring on a removable appliance is
d d d d d d d
A. torque.
B. tipping.
C. rotation.
D. translation. - Answer - B. tipping. d d d d d
Epinephrine should be administered immediately in d d d d d
which of the following emergencies?
d d d d d
A. A severe angina attack.
d d d
B. A mild asthmatic attack.
d d d
C. Severe anaphylaxis. d
D. Severe hypotension - Answer - C. Severe anaphylaxis.
d d d d d d d
The location and extent of subgingival calculus is most
d d d d d d d d
accurately determined clinically by
d d d d
A. radiopaque solution used in conjunction with d d d d d
radiographs.
d
B. disclosing solution. d
C. probing with a fine instrument. d d d d
D. visual inspection - Answer - C. probing with a fine instrument.
d d d d d d d d d d
Endotoxin is d
Correct Answers
The principal reason for a cavosurface bevel on an
d d d d d d d d
inlay preparation is to
d d d d
A. remove undermined enamel. d d
B. improve marginal adaptation. d d
C. decrease marginal percolation. d d
D. increase resistance and retention forms. - Answer - B. improve marginal adaptation.
d d d d d d d d d d d
Lichen planus occurs most frequently on the
d d d d d d
A. buccal mucosa. d
B. tongue.
C. floor of the mouth. d d d
D. gingiva. - Answer - A. buccal mucosa. d d d d d d
The pulpal floor of a Class II cavity is cut perpendicular
d d d d d d d d d d
to the long axis of the tooth EXCEPT in the
d d d d d d d d d d
A. maxillary first premolar. d d
B. maxillary second premolar. d d
C. mandibular second premolar. d d
D. mandibular first premolar. - Answer - D. mandibular first premolar. d d d d d d d d d
Upon examination of an edentulous patient, it is
d d d d d d d
observed that the tuberosities contact the retromolar
d d d d d d d
pads at the correct occlusal vertical dimension. The
d d d d d d d d
treatment of choice is to
d d d d d
A. reduce the retromolar pads surgically to
d d d d d
provide the necessary clearance.
d d d d
B. reduce the tuberosities surgically to provide the
d d d d d d
necessary clearance.
d d
C. construct new dentures at an increased occlusal d d d d d d
vertical dimension to gain the necessary clearance.
d d d d d d d
D. proceed with construction of the denture and d d d d d d
reduce the posterior extension of the
d d d d d d
mandibular denture to eliminate interferences. - Answer - B. reduce the tuberosities
d d d d d d d d d d d
surgically to provide the
d d d d
,necessary clearance. d
In the absence of "Hanks balanced salt solution", what
d d d d d d d d
is the most appropriate media to transport an avulsed
d d d d d d d d d
tooth?
d
A. Saliva.
B. Milk.
C. Saline.
D. Tap water. - Answer - B. Milk.
d d d d d d
The setting of a zinc-phosphate cement can best be
d d d d d d d d
retarded by
d d
A. decreasing the particle size. d d d
B. increasing the concentration of water in the d d d d d d
liquid.
d
C. increasing the rate of addition of the powder to d d d d d d d d
the liquid.
d d
D. cooling the glass mixing slab. - Answer - D. cooling the glass mixing slab.
d d d d d d d d d d d d d
What is the most likely diagnosis of a white lesion on
d d d d d d d d d d
the retromolar pad opposing a non-functional
d d d d d d
molar?
d
A. Alveolar ridge keratosis. d d
B. Candidiasis.
C. Lichen planus. d
D. Squamous cell carcinoma - Answer - A. Alveolar ridge keratosis d d d d d d d d d
Which of the following is the most likely cause of
d d d d d d d d d
osteoporosis, glaucoma, hypertension and peptic
d d d d d
ulcers in a 65 year old with Crohn's disease?
d d d d d d d d d
A. Uncontrolled diabetes. d
B. Systemic corticosteroid therapy. d d
C. Chronic renal failure. d d
D. Prolonged NSAID therapy. d d
E. Malabsorption syndrome. - Answer - B. Systemic corticosteroid therapy. d d d d d d d d
A hinge axis facebow records
d d d d
A. Bennett angle. d
B. centric relation. d
C. lateral condylar inclination. d d
,D. horizontal condylar inclination. d d
E. opening and closing axis of the mandible. - Answer - E. opening and closing axis of the
d d d d d d d d d d d d d d d d
mandible.
d
The most important objective of occlusal adjustment of
d d d d d d d
a natural dentition is to
d d d d d
A. prevent temporomandibular joint syndrome. d d d
B. increase the shearing action in mastication. d d d d d
C. improve oral hygiene by preventing food d d d d d
impaction.
d
D. achieve a more favorable direction and d d d d d
distribution of forces of occlusion. - Answer - D. achieve a more favorable direction and
d d d d d d d d d d d d d d
distribution of forces of occlusion.
d d d d d
Which condition has NOT been associated with
d d d d d d
Candida albicans infection?
d d d
A. Median rhomboid glossitis. d d
B. Angular cheilitis. d
C. Denture stomatitis. d
D. Aphthous ulcerations. d
E. Oral hairy leukoplakia. - Answer - D. Aphthous ulcerations.
d d d d d d d d
Which of the following is essential for successful
d d d d d d d
periodontal treatment?
d d
A. Scaling.
B. Final evaluation and maintenance on a oneyear
d d d d d d
recall.
d
C. Periodontal flap surgery. d d
D. Elimination of local etiologic factors. - Answer - D. Elimination of local etiologic d d d d d d d d d d d d
factors.
d
If a complete mandibular denture causes a burning
d d d d d d d
sensation in the premolar region, this is due to the
d d d d d d d d d d
denture exerting pressure in/on the
d d d d d
A. fibres of the buccinator muscle. d d d d
B. lingual branch of the mandibular division of d d d d d d
the trigeminal nerve.
d d d
C. underlying bone. d
D. mental branch of the inferior alveolar nerve. d d d d d d
E. buccal frenum area. - Answer - D. mental branch of the inferior alveolar nerve.
d d d d d d d d d d d d d
, A hinge axis facebow records
d d d d
A. Bennett angle. d
B. centric relation. d
C. lateral condylar inclination. d d
D. horizontal condylar inclination. d d
E. opening and closing axis of the mandible. - Answer - E. opening and closing axis of the
d d d d d d d d d d d d d d d d
mandible.
d
Which of the following microorganisms are most
d d d d d d
frequently found in infected root canals?
d d d d d d
A. Streptococcus viridans. d
B. Staphylococcus aureus. d
C. Lactobacilli.
D. Enterococci.
E. Staphylococcus albus. - Answer - A. Streptococcus viridans. d d d d d d d
The predominant type of movement produced by a
d d d d d d d
finger spring on a removable appliance is
d d d d d d d
A. torque.
B. tipping.
C. rotation.
D. translation. - Answer - B. tipping. d d d d d
Epinephrine should be administered immediately in d d d d d
which of the following emergencies?
d d d d d
A. A severe angina attack.
d d d
B. A mild asthmatic attack.
d d d
C. Severe anaphylaxis. d
D. Severe hypotension - Answer - C. Severe anaphylaxis.
d d d d d d d
The location and extent of subgingival calculus is most
d d d d d d d d
accurately determined clinically by
d d d d
A. radiopaque solution used in conjunction with d d d d d
radiographs.
d
B. disclosing solution. d
C. probing with a fine instrument. d d d d
D. visual inspection - Answer - C. probing with a fine instrument.
d d d d d d d d d d
Endotoxin is d
