The principal reason for a cavosurface bevel on an
inlay preparation is to
A. remove undermined enamel.
B. improve marginal adaptation.
C. decrease marginal percolation.
D. increase resistance and retention forms. - ANSWERS-B. improve marginal
adaptation.
Lichen planus occurs most frequentl...
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NDEB Exam 2019 NDEB Solved
Questions and Correct Answers
The principal reason for a cavosurface bevel on an
inlay preparation is to
A. remove undermined enamel.
B. improve marginal adaptation.
C. decrease marginal percolation.
D. increase resistance and retention forms. - ANSWERS-B. improve marginal
adaptation.
Lichen planus occurs most frequently on the
A. buccal mucosa.
B. tongue.
C. floor of the mouth.
D. gingiva. - ANSWERS-A. buccal mucosa.
The pulpal floor of a Class II cavity is cut
perpendicular to the long axis of the tooth EXCEPT
in the
A. maxillary first premolar.
B. maxillary second premolar.
C. mandibular second premolar.
D. mandibular first premolar. - ANSWERS-D. mandibular first premolar.
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. - ANSWERS-B. reduce the tuberosities
surgically to provide the
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. - ANSWERS-B. Milk.
The setting of a zinc-phosphate cement can best be
retarded by
A. decreasing the particle size.
B. increasing the concentration of water in the
liquid.
C. increasing the rate of addition of the powder to
the liquid.
D. cooling the glass mixing slab. - ANSWERS-D. cooling the glass mixing slab.
What is the most likely diagnosis of a white lesion
on the retromolar pad opposing a non-functional
molar?
A. Alveolar ridge keratosis.
B. Candidiasis.
C. Lichen planus.
D. Squamous cell carcinoma - ANSWERS-A. Alveolar ridge keratosis
Which of the following is the most likely cause of
osteoporosis, glaucoma, hypertension and peptic
ulcers in a 65 year old with Crohn's disease?
A. Uncontrolled diabetes.
B. Systemic corticosteroid therapy.
C. Chronic renal failure.
D. Prolonged NSAID therapy.
E. Malabsorption syndrome. - ANSWERS-B. Systemic corticosteroid therapy.
A hinge axis facebow records
A. Bennett angle.
B. centric relation.
C. lateral condylar inclination.
D. horizontal condylar inclination.
E. opening and closing axis of the mandible. - ANSWERS-E. opening and closing axis
of the mandible.
The most important objective of occlusal adjustment
of a natural dentition is to
A. prevent temporomandibular joint syndrome.
B. increase the shearing action in mastication.
C. improve oral hygiene by preventing food
impaction.
,D. achieve a more favorable direction and
distribution of forces of occlusion. - ANSWERS-D. achieve a more favorable direction
and
distribution of forces of occlusion.
Which condition has NOT been associated with
Candida albicans infection?
A. Median rhomboid glossitis.
B. Angular cheilitis.
C. Denture stomatitis.
D. Aphthous ulcerations.
E. Oral hairy leukoplakia. - ANSWERS-D. Aphthous ulcerations.
Which of the following is essential for successful
periodontal treatment?
A. Scaling.
B. Final evaluation and maintenance on a oneyear
recall.
C. Periodontal flap surgery.
D. Elimination of local etiologic factors. - ANSWERS-D. Elimination of local etiologic
factors.
If a complete mandibular denture causes a burning
sensation in the premolar region, this is due to the
denture exerting pressure in/on the
A. fibres of the buccinator muscle.
B. lingual branch of the mandibular division of
the trigeminal nerve.
C. underlying bone.
D. mental branch of the inferior alveolar nerve.
E. buccal frenum area. - ANSWERS-D. mental branch of the inferior alveolar nerve.
A hinge axis facebow records
A. Bennett angle.
B. centric relation.
C. lateral condylar inclination.
D. horizontal condylar inclination.
E. opening and closing axis of the mandible. - ANSWERS-E. opening and closing axis
of the mandible.
Which of the following microorganisms are most
frequently found in infected root canals?
A. Streptococcus viridans.
B. Staphylococcus aureus.
C. Lactobacilli.
D. Enterococci.
, E. Staphylococcus albus. - ANSWERS-A. Streptococcus viridans.
The predominant type of movement produced by a
finger spring on a removable appliance is
A. torque.
B. tipping.
C. rotation.
D. translation. - ANSWERS-B. tipping.
Epinephrine should be administered immediately in
which of the following emergencies?
A. A severe angina attack.
B. A mild asthmatic attack.
C. Severe anaphylaxis.
D. Severe hypotension - ANSWERS-C. Severe anaphylaxis.
The location and extent of subgingival calculus is
most accurately determined clinically by
A. radiopaque solution used in conjunction with
radiographs.
B. disclosing solution.
C. probing with a fine instrument.
D. visual inspection - ANSWERS-C. probing with a fine instrument.
Endotoxin is
A. a cell wall component of gram-negative
bacteria.
B. a potent inflammatory agent.
C. present in diseased root cementum.
D. All of the above. - ANSWERS-D. All of the above.
In inhalation analgesia, what is the safe maximal
nitrous oxide concentration that can be delivered?
A. 50%.
B. 60%.
C. 70%.
D. 80%. - ANSWERS-C. 70%.
The bond between porcelain and metal in a
ceramometal (porcelain bonded to metal) crown is
A. chemical.
B. mechanical.
C. equally chemical and mechanical.
D. neither chemical nor mechanical. - ANSWERS-A. chemical.
The predominant immunoglobulin isolated from
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