ch. 32 radiology
Card Set Information
ch. 32 radiology
interpretation dental caries
ch 32 radiology
tooth decay, ________ is the localized destruction of teeth by microorganisms.
what does carious mean?
a cavity refers to a _________ or _______
cavitation or hole
T/F to detect caries, both clinical and radiographic examination is necessary
can a dental exam be complete without radiographs?
what does using a radiograph allow the professional to evaluate about the carious lesions?
the extent and severity
smooth surfaces that may exhibit a chalky white or opacity indicates ____________
what other type of radiograph besides BWX are able to be used for evaluating caries?
PA's using the paralleling technique
can the use of a pocket-sized magnifying glass be helpful in evaluating the radiographic appearance of caries?
on a dental radiograph, interproximal caries are typically seen at or just below (apical to):
the contact point
what shape or configuration does the caries make as it progresses inward through the enamel of the tooth?
a triangular configuration
when caries reaches the DEJ, which direction does it spread to continue to the dentin?
what are the four interproximal carious lesions classified as?
caries that extends less than halfway through the thickness of the enamel:
incipient caries (beginning to exist or appear)
which class is incipient caries and which structure(s) does it go through?
caries that extends more than halfway through the thickness of the enamel but does not involve the DEJ
moderate interproximal caries
moderate interproximal caries are which class and where are they seen?
in enamel only
caries that extends to or through the DEJ and into the dentin but does not extend through the dentin more than half the distance toward the pulp:
advanced interproximal caries
which class is advanced interproximal caries and which layer(s) are involved?
both enamel and dentin
caries that extends through the enamel, dentin, and more than half the distance toward the pulp:
sever interproximal caries
what class are severe interproximal caries and which layer(s) are involved?
both enamel and dentin, may appear clinicallly as a cavitation in the tooth
why is it difficult to see occlusal caries on a radiograph?
because of the superimposition of the dense buccal and lingual enamel cusps
when are occlusal caries actually seen on a radiograph?
when there is involvement of the DEJ
what are the three classifications of occlusal caries?
which caries cannot be seen on a dental radiograph and must be detected clinically with an explorer?
incipient occlusal caries
which caries extends into the dentin and appears as a very thin radiolucent line under the enamel of the occlusal surface of the tooth
moderate occlusal caries
which caries extends into dentin and appears as a large radiolucency extending under the enamel? it also appears as a cavitation in the tooth
severe occlusal caries
why are buccal and lingual caries hard to detect on a radiograph?
because of the superimposition of the densities of normal tooth structure
which teeth are the most common to have buccal or lingual caries?
mandibular and maxillary first molars
root surface caries involves only the ______ of the teeth. the ________ and ________ located just below the cervical region of the tooth are involved
is there involvement of enamel in root caries?
bone loss and corresponding gingival recession preceed the caries process from:
exposed root surfaces
when buccal or lingual caries is able to be seen on a radiograph, what does it look like?
a small circular radiolucent area
what are the two most common locations of exposed roots?
mandibular molar areas
what appears as a cupped-out or crater-shaped radiolucency just below the CEJ?
root surface caries
recurrent caries is also known as
what caries occurs adjacent to a preexisting restoration?
where do recurrent caries most often occur?
beneath interproximal margins of a restoration
what are the three causes for recurrent caries?
inadequate cavity preparation
incomplete removal of caries before placed restoration
what does rampant mean?
growing or spreading unchecked
rampant caries is ________ and __________ and affects numerous teeth
advanced and severe
where is rampant caries most commonly seen?
in children with poor dietary habits or in adults with decreased salivary flow.