NDEB PRACTICE STUDY EXAM
The placement of a retentive pin in the proximal regions of
posterior teeth would most likely result in periodontal ligament
perforation in the - CORRECT ANSWER-mesial of a
mandibular first molar
Air water spray used as a coolant in high speed - CORRECT
ANSWER-wil...
The placement of a retentive pin in the proximal regions of
posterior teeth would most likely result in periodontal ligament
perforation in the - CORRECT ANSWER-mesial of a
mandibular first molar
Air water spray used as a coolant in high speed - CORRECT
ANSWER-will reduce clogging of cutting instruments
The proposed mechanism by which a calcium hydroxide
preparation initiates secondary dentin formation in direct pulp
cappings is by - CORRECT ANSWER-stimulating
undifferentiated cells of the tissue to differentiate into
odontoblasts
when resecting the apical aspect of a tooth during endodontic
apical surgery it is appropriate to - CORRECT ANSWER-place
an amalgam retrofill
For composite resin preparations cavosurface enamel margins
are bevelled because - CORRECT ANSWER-a bevelled
margin produces a more favorable surface for etching and after
etching the bonding ages reduces microleakage
what instruments can be used for placing gingival bevels on
cast gold inlay preparations - CORRECT ANSWER-margin
trimmers and carbide finishing burs
,What is the most probable postoperative complication of
intracoronal bleaching for a tooth that has an inadequate
internal seal - CORRECT ANSWER-external root resorption
fractured incisal angles in the permanent teeth of adolescent
patients are best restored using - CORRECT ANSWER-acid
etch composite resin techniques
What are the purposes of using occlusal splints - CORRECT
ANSWER-to change the pattern and degree of tactile afferent
neural impulses, to immobilize teeth and to prevent teeth from
disturbing occlusal sensory input
histologically a pulp polyp consists of - CORRECT ANSWER-a
mass of collagenous fibres, proliferating capillaries, fibroblasts
Treatment of primary herpetic gingivostomatitis should include -
CORRECT ANSWER-palliative treatment and control of
secondary infection
Teeth mobility may be due to - CORRECT ANSWER-excessive
occlusal force, decreases osseous support and periodontal
abscess
lichen planus occurs most frequently on the - CORRECT
ANSWER-buccal mucosa
enlargement of the gingiva described as idiopathic fibromatosis
is best described as - CORRECT ANSWER-hyperplasia
the primordial cyst probably results from - CORRECT
ANSWER-cystic degeneration of the stellate reticulum early in
the formation of the tooth
histological sections of a lesion removed from the apex of a
carious tooth show immature fibrous tissue and chronic
Oral lesions that fail to heal may be associated with -
CORRECT ANSWER-tuberculosis, syphilis, neoplasia,
diabetes
In dental radiology patient protection is most important for -
CORRECT ANSWER-pregnant women
a salivary calculus is a - CORRECT ANSWER-sialolith
which can cause a contact stomatitis - CORRECT ANSWER-
dentrifice, lipstick, acrylic, antibiotics
Acute maxillary sinusitis is associated with - CORRECT
ANSWER-pain in the posterior maxillary teeth, nasal discharge,
tenderness of posterior maxillary teeth to percussion, increase
of pain when bending over
the collimator of an xray tube - CORRECT ANSWER-restricts
the diameter of the x-ray beam
the quantitiy of radiation output in a dental x-ray apparatus is a
function of - CORRECT ANSWER-time and ma
a zinc phosphate cement on a radiograph - CORRECT
ANSWER-can be seen but is less radiopaque than amalgam
papillary hyperplasia under a denture is usually due to -
CORRECT ANSWER-ill fitting denture
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