問題一覧
1
the gag reflex is ?
a body defensive mechanism
2
a shallow palate that will not allow proper placement of the film for the paralleling method?
is occasionally found
3
givgival recession is not detectable radiographically because ?
soft tissue is not seen
4
the crown root ratio as seen on radiographs becomes critical in?
designating abutments for a fixed bridge
5
all of the following tooth structures appear radiopaque except ?
periodontal membrane
6
the best radiographic projection for the detection of an impacted mandibular third molar is ?
panoramic
7
teeth with hypercementosis are usually ?
not treated
8
the type of caries best detected on radiographs is ?
interproximal caries
9
in which dental specialist is the marking grid usually employed ?
endodontis
10
all of the following can resemble caries radiographically except ?
almalgam restoration
11
a rapidly growing radiolucent lesion with irregular borders in the oral cavity could be a sign of ?
a malignancy
12
radiographic pulp capping materials will appear ?
radiopaque
13
a normal radiographic anatomic landmark that can be misdiagnosed as periapical pathology is ?
mental foramen
14
which of the following can be seen on any mandibular radiograph?
inferior border of the mandible
15
the interpretation of radiographs primarily provides the basis for building a ?
diagnosis
16
large high pulp horns are more frequently seen in?
young patients
17
the occlusal part of the alveolar bone is referred to at the ?
alveolar crest
18
all of the following may be seen on a mandibular molar film except ?
the condyle
19
the most common reason for taking dental radiographs is the detection of ?
caries
20
for a darkroom quality assurance program to be effective..
the darkroom must be a darkroom and nothing else
21
gagging in many cases can be controlled or prevented by ?
use of undiluted mouthwash
22
if clearing of a film requires more than 4 mins , the fixer..
is too weak
23
it is difficult to visualize buccal caries radiographically because ?
of overlying normal structures
24
processing solutions should be changed ?
every 2 to 3 weeks
25
all teeth test vital in an 11 year old patient. a radiolucency at the apices of a permanent mandibular second molar that has no caries or restorations is probably ?
incomplete root formation
26
the most likely diagnosis of an interproximal radiolucency just above the cervical line on a clinically caries negative tooth is ?
cervical burnout
27
radiographic changes evident in gingivitis include ?
none of the above
28
root resorption can be caused by ?
all of the above
29
which of the following will appear radiopaque on a processed radiograph
all of the above
30
the best radiographic projection for detection of periodical pathology is ?
periapical
31
a dentigerous cyst should?
be surgically removed
32
the best intraoral radiographic projection for detecting caries is ?
the bitewing
33
most impacted teeth are not visible on ?
clinical examination
34
most lesions in the oral cavity are ?
radiopaque
35
which of the following is probably the least reliable way to localize an impact ion in the buccolingual plane ?
localization by definition
36
which of the following is not a common supernumerary tooth ?
maxillary premolar
37
the process occurring when the cells of the periodontal ligament resort the cementum and dentin of the root is known as?
external resorption
38
a dental professional may want to use a ct scanning ?
for visualizing the articulate disc
39
as for periodontal prognosis teeth that have anatomically short roots will?
have a poorer prognosis
40
when caries invades the dentin from the enamel it is seen as ?
spreading laterally and then advancing towards the pulp
41
dental professionals should never ?
hold the film in a patients mouth
42
which of the following is a major part of the tooth structure, appears radiopaque on radiographs and is seen in both the crown and roots of the teeth?
dentin
43
when a patient consistently moves the bitewing packet with the tongue and bites the packet, the operator should ?
do a reverse bitewing
44
the infrobony pocket is seen with ?
vertical bone loss
45
a scientifically controlled way to test the strength of the processing solutions is by use ?
of a step wedge
46
it usually follows that developer and fixer solution will need changing
at the same time
47
conditions affecting the eruption pattern that can only be seen by radiographic examination include ?
all of the above
48
the density of secondary dentin when compared radiographically to normal dentin is ?
the same
49
the pulp chamber and canals of the teeth in older patients tend to be ?
calcified
50
proper patient management is the responsibility of the ?
all of the above
51
the periodontal ligament surrounding a normal tooth appears radiographically as ?
an unbroken radiolucent line around the tooth root.