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Radiography Interpretation Final
Terms in this set (111)
radiopaque lesions may occur in:
either bone or soft tissue
the cavitation caused by dental caries will appear ___ on dental images because the area of caries will be ___ dense than surrounding structures
a unilocular lesion with corticated borders is usually indicative of a ___ process
how would you describe this lesion? (picture)
5mm radiolucent unilocular lesion with corticated borders inter-radicular between tooth #2 and #4 (edentulous area)
to offer an explanation (can be done by any trained dental professional)
A definitive decision on the patient's condition (can only be done by dentist)
if the patient's lips are not closed on the bite block during the exposure of a panoramic image, a ____ shadow results that obscures the anteriors teeth
an "exaggerated smile line" is seen on the dental image if the patient's:
chin is tipped down
a "reverse smile line" is seen on the image is the patient's:
chin is tipped up
error on this panoramic image? (picture x)
patient is slumped, chin is too high (x)
the anterior teeth will appear "fat" if the:
teeth are positioned too far back on the bite block
error on this panoramic image? (picture b)
earrings left on, patient positioned too far forward in the machine (b)
a ghost image appears ____ than of its actual counterpart
you notice that the molars and premolars on the right side are larger than the teeth on the left side. what patient positioning error did you make?
the patient's head was turned to the left
the ___ is a long, thin, pointed process below the external auditory meatus
which air space is labeled #3?
areas of teeth not covered by the lips appear more radiolucent and areas covered by the lips appear more radiopaque; the tongue appears as a faint dome-shaped, radiopaque area superimposed over maxillary posterior teeth (T/F then T/F?)
T then T
the zygomatic process appears Y-shaped on images; the zygomatic process appears radiolucent on images (T/F then T/F?)
F then F
on a panoramic image, the ____ air space appears as a diagonal radiolucency located superior to the radiopaque shadow of the soft palate and uvula
the lateral pterygoid plate is a wing-shaped bony projection of the ___ bone
this bilateral landmark is located above the apices of the maxillary premolars and molars and appears radiolucent on a panoramic image?
identify the restoration your patient has on tooth #30
stainless steel crown
gutta percha appears ____. if compared with amalgam, gutta percha appears ___ radiodense
a porcelain-fused-to-metal crown appears:
to have 2 components. the metal component appears completely radiopaque and the porcelain component appears slightly radiopaque
post and core restorations can be seen in ____ treated teeth
a thin radiopaque line outlining the prepared tooth may be evident on a dental image of an all-porcelain crown. this thin line represents:
what restorative materials are used on #30?
PFM, gutta percha, silver point
what materials are seen in F?
what restorative material(s) are seen in #3?
gutta percha, retention pins
on a dental image, interproximal caries are typically seen at or just below the:
identify the type of decay present that your patient has on the mesial of tooth #4
advanced interproximal caries
rampant caries are typically seen in children with ____ dietary habits or in adults with ____ salivary flow
which of the following statements is true of root surface caries?
root surface caries appear as a cupped-out or crater-shaped radiolucency just below the CEJ
buccal or lingual caries appear as a ___ on dental images
radiolucent small circle
you are viewing your patient's bite wing images. he has an interproximal carious lesion that is almost to the pulp. what is the classification?
which of the following interproximal lesions does not involve the dentin, but it does extend more than half way through the enamel?
identify the caries on #18
what structure is this (#22)?
in health, the lamina dura around the roots of the teeth appear as a(n) ____ line
identify the radiopaque area the arrow is pointing to on your patient's dental image
the ____ of adjacent teeth can be used as a plane of reference in determining the pattern of bone loss present
you suspect your patient has periodontal disease in the molar region. which of the following dental images should you take?
dental images permit the evaluation of ______ in the detection of periodontal disease
how would you best describe the bone loss in this image?
moderate, horizontal stage III
how would you describe the bone loss in this image?
severe, horizontal stage IV
which type of bone is composed of bony trabeculae?
an opening or hole in bone that permits the passage of nerves and blood vessels
which os the following landmarks would appear radiolucent on a dental image?
the ____ nerve exits the maxilla through the incisive foramen
the superior foramina of the incisive canal are located on the ___ of the nasal cavity
which of the following tooth structures is most radiolucent?
on a dental image, the mental ridge often appears superimposed over the ___ teeth
the inverted Y refers to the intersection of the maxillary since and the ____
the lingual foramen is in the center of the:
interdental nutrient canals are most often seen in the:
on a mandibular molar periapical image, the external oblique ridge appears as a ____ band extending ____ from the anterior border of the ramus of the mandible
radiopaque; downward and forward
root fractures occur most often in the ____ region
maxillary central incisor
which of the following describes luxation?
the atypical movement of teeth
your patient had tooth #8 displaced lingually when she fell, and her face impacted the sidewalk. which type of image should you take to evaluate the tooth?
the term used for a tooth that is totally dislodged from the alveolar bone is:
your patient is complaining of pain around tooth #30. a dental image reveals a radiolucent area on the side of the root. you cannot see the lamina dura. which of the following best describes what your patient is experiencing?
your patient's dental image reveals a distinct radiopaque area below the apex of tooth #18, which is a nonmetal tooth and has had chronic pulpits. your patient most likely has:
the periapical abscess:
refers to a tooth with an infection in the pulp
pulp stones ____ cause symptoms and ____ require treatment
do not; do not
absorption of a tooth that occurs from the inside out is called ____ resorption
with digital imaging, the term ____ is used to describe the pictures that are produced
a primary advantage to digital imaging is the superior gray scale resolution that results; digital imaging uses up to 32 shades of gray (T/F then T/F?)
T then F
the images are cleared from the storage phosphor imaging plates by:
a clearing step within the scanner
digital sensors contain distinct units of programmable gray values that are sensitive to x-rays called:
how does the CMOS detector differ from the CCD detector?
the CMOS detector is silicon-based and differs from the CCD detector in the way that the pixels are read
storage phosphor imaging:
uses a reusable imaging plate
a sensor with a fiber optic cable linked to the computer is placed into the mouth of the patient and exposed to x-radiation. this is an example of:
direct digital imaging
most digital imaging systems use a ____ as the x-radiation source
conventional dental x-ray unit
compared with film emulsion, the pixels used in digital imaging are structures in an orderly arrangement (T/F?)
three-dimensional imaging is encoded for handling, storage, and transmission by which of the following?
digital imaging and communications in medicine
radiation is stopped and may not reach the receptor when it interacts with an area of high attenuations such as
large amalgam restorations
the reconstruction of raw data into images when imported into viewing software to create three anatomic planes of the body is called:
one of the advantages of using DICOM data is that images among dental professionals, imaging centers, and physicians may be shared; the volume of data produced is similar to medical computed tomography but CBCT uses more radiation to acquire the images (T/F then T/F? )
T then F
Cone beam data is said to have a 1:2 relationship with the anatomy; with CBCT imaging, anatomy can be accurately reproduced, the superimposition of structures is eliminated, and image magnification doesn't occur (T/F then T/F?)
F then T
there are CBCT machines that have shortened exposure times of 8-10 seconds; this shortened exposure time results in increased patient cooperation and decreased artifacts caused from patient movement (T/F then T/F?)
T then T
The number of gray scale colors available for each pixel in the image is called
three dimensional imaging provides a more accurate image than traditional two-dimensional imaging; locations, distances, sizes, and shapes of pathology and anatomic landmarks, including eruption patterns, are more accurately represented with three-dimensional imaging (T/F then T/F?)
T then T
many dental professionals who incorporate CBCT into their practices have not had the training required to interpret anatomy beyond the maxilla and mandible; the AAOMR recommends that CBCT and implant imaging be interpreted only by a board certified oral and maxillofacial radiologist or a dentist with adequate training and.or experience (T/F then T/F?)
T then T
non-screen film is sensitive to fluorescent light; screen-films are sensitive to the visible light emitted from the intensifying screen (T/F then T/F?)
F then T
the optimum temperature for film storage ranges from ____ to ____ degrees
the areas of film that are ____ energized will be ____ when the film is processed
a fast film responds more quickly than a slow film because:
the silver halide crystals in the emulsion are larger
the invisible pattern of stored energy on the exposed film is called the:
the film emulsion is:
attached to both sides of the film
the latent image is stored by the ____ in dental x-ray film
silver halide crystals
which component of x-ray film has a suspension of microscopic silver halide crystals?
when you are placing the film packet in your patient's mouth, which side of the film packet would you place toward the patient's teeth?
the solid white side
what is the purpose of the lead foil sheet found within the film packet?
to shield the film from secondary backscattered radiation
the overall appearance of your film is too dark. which of the following is the cause of this error?
film was in the developer too long
the latent image is:
the image on the radiographic film before processing but after exposure
all excess chemicals are removed from the emulsion during:
when the film exits the film processor, you notice that is appears foggy and lacks detail. which of the following could be a possible solution to prevent this from occurring with the next patient's film?
eliminate light leaks
the chemical responsible for creating the gray shades on the radiograph is?
the chemical responsible for creating the black shades on the radiograph is?
which of the following statements is true of automatic processing?
the film is transported directly from the developer solution into the fixer without a rinsing step
To maintain freshness, strength, and solution levels, film processing and wet tank solutions must be replenished
underdeveloped films may result from:
low developer temperature
a reference radiograph is used to evaluate
the clearing test is used to monitor:
to perform the coin test, the film and coin are exposed to:
according to the test for dental x-ray film, if the processed film appears clear with a slight blue tint, the film
is fresh and has been properly stored and processed
a grid is composed of a series of:
thin lead strips
which of the following is the fastest recommended screen and screen film combination
rare earth screen with green light
the lateral jaw projection
is valuable for patients with limited jaw opening because of a fracture or swelling
your patient thinks she has fractured her zygomatic arch. which of the following projections would you take?
which of the following would you evaluate using an extra oral image?
growth and development
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