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Dental Radiology V - 30, 32-35

Terms in this set (71)

According to the text, if questions arise as to what is seen on a radiograph concerning dental restorations, materials, or foreign objects, _____ can be used to obtain additional information.
a. verbal inquiry of the patient
b. clinical examination of the patient
c. an Internet search
d. a textbook reference
clinical examination of the patient
Because metallic restorations absorb x-rays, the area of the film that corresponds to their location remains unexposed, and the metallic restorations appear completely _____ on a dental radiograph.
a. radiosensitive
b. radioresistant
c. radiopaque
d. radiolucent
radiopaque
Of the nonmetallic restorations, _____ is the most dense and least radiolucent.
a. unfilled acrylic
b. filled acrylic
c. composite
d. porcelain
porcelain
Which of the following is the most common restorative material used in dentistry?
a. Porcelain
b. Cast gold
c. Amalgam
d. Acrylic
amalgam
Amalgam overhangs can be described as extensions of amalgam seen on dental radiographs beyond the crown portion of a tooth located in the _____ region.
a. buccal
b. lingual
c. interproximal
d. occlusal
interproximal
The greatest potential negative consequence of an amalgam overhang is:
a. Unesthetic contour
b. Destruction of interproximal bone
c. Impingement of the interdental papilla
d. Stretching of periodontal ligament fibers
Destruction of interproximal bone
A large, well-adapted radiopaque restoration with smooth borders is probably:
a. Silver amalgam
b. Gold
c. Porcelain
d. Stainless steel
gold
Post and core restorations can be seen in _____ treated teeth.
a. periodontally
b. orthodontically
c. endodontically
d. nonendodontically
endodontically
Porcelain restoration are:
a. Radiolucent
b. Slightly radiolucent
c. Slightly radiopaque
d. Radiopaque
Slightly radiopaque
A thin radiopaque line outlining the prepared tooth may be evident on a dental radiograph of an all-porcelain crown. This thin line represents:
a. Die spacer
b. Cement
c. An air pocket
d. A metal substructure
cement
A porcelain-fused-to-metal crown appears:
a. Uniformly radiopaque
b. Uniformly radiolucent
c. To have two radiographic components. The metal component appears completely radiopaque, and the porcelain component appears slightly radiopaque.
d. To have two radiographic components. The metal component appears completely radiolucent, and the porcelain component appears slightly radiolucent.
To have two radiographic components. The metal component appears completely radiopaque, and the porcelain component appears slightly radiopaque.
Some manufacturers of composite materials add radiopaque particles to their products to help the viewer differentiate a composite restoration from:
a. An amalgam restoration
b. Dental caries
c. A cast gold restoration
d. A porcelain-fused-to-metal crown
Dental caries
A base material appears _____. If compared with amalgam, the base material appears _____ radiodense.
a. radiolucent; more
b. radiolucent; less
c. radiopaque; more
d. radiopaque; less
radiopaque; less
Diatorics are found in:
a. Silver point endodontic fillings
b. Gutta percha endodontic fillings
c. Anterior porcelain denture teeth
d. Anterior acrylic denture teeth
Anterior porcelain denture teeth
Diatorics are:
a. Color sources
b. Metal retention pins
c. Identification dots
d. Orthodontic brackets
Metal retention pins
With intraoral films, patients should be instructed to remove:
1. Necklaces
2. Eyeglasses
3. Nose jewelry
4. Patient napkin chains

a. 1, 2, 3, 4
b. 1, 2, 3
c. 2, 3, 4
d. 2, 3
2, 3, 4
Root fractures occur most often in the _____ region.
a. maxillary central incisor
b. mandibular central incisor
c. maxillary molar
d. mandibular molar
maxillary central incisor
The _____ radiograph is the film of choice for the evaluation of mandibular fractures.
a. occlusal
b. periapical
c. bite-wing
d. panoramic
panoramic
Luxation is:
a. The abnormal displacement of teeth
b. Used to describe fragments of bone following traumatic injury
c. Hemorrhage, or bleeding
d. Swelling or edema
The abnormal displacement of teeth
Teeth that have been luxated should be evaluated by a(n) _____ radiograph.
a. bite-wing
b. periapical
c. occlusal
d. panoramic
periapical
_____ is the complete displacement of a tooth from alveolar bone.
a. Luxation
b. Intrusion
c. Extrusion
d. Avulsion
avulsion
_____ resorption is a process seen with the normal shedding of primary teeth.
a. Physiologic
b. Pathologic
c. External
d. Internal
physiologic
_____ is a diffuse calcification of the pulp chamber and pulp canals of teeth.
a. Pulpal sclerosis
b. Pulpal obliteration
c. Pulp stones
d. Internal resorption
Pulpal sclerosis
Teeth that exhibit pulpal obliteration:
a. Require extraction
b. Require endodontic therapy
c. Require occlusal restoration
d. Do not require treatment
Do not require treatment
Pulp stones _____ cause symptoms and _____ require treatment.
a. do; do
b. do; do not
c. do not; do
d. do not; do not
do not; do not
Which of the following is a periapical radiolucency?
a. Hypercementosis
b. Condensing osteitis
c. Periapical cyst
d. Sclerotic bone
Periapical cyst
Periapical cysts account for _____ of all cysts in the oral region.
a. 10% to 20%
b. 20% to 25%
c. 25% to 50%
d. 50% to 70%
50% to 70%
A chronic periapical abscess is:
a. Painful
b. Usually asymptomatic
c. Sensitive to percussion
d. Sensitive to heat
Usually asymptomatic
The periapical abscess:
a. Refers to a tooth with an infection in the pulp
b. Is a purulent inflammation within the periodontal tissues
c. Is treated with deep scaling and debridement
d. Both b and c
Refers to a tooth with an infection in the pulp
_____ is a well-defined radiopacity that is seen below the apex of a nonvital tooth with a history of a long-standing pulpitis.
a. Condensing osteitis
b. Periodontal abscess
c. Sclerotic bone
d. Periapical abscess
Condensing osteitis
Condensing osteitis is seen _____ the apex of a _____ tooth.
a. below; vital
b. below; nonvital
c. above; vital
d. above; nonvital
below; nonvital
Condensing osteitis _____ vary in size and shape and _____ appear to be attached to the tooth root.
a. may; does
b. may; does not
c. may not; does
d. may not; does not
may; does not
The treatment for condensing osteitis is:
a. Extraction
b. Root canal therapy
c. Osseous recontouring
d. No treatment is necessary
No treatment is necessary
_____ is the most common periapical radiopacity observed in adults.
a. Hypercementosis
b. Sclerotic bone
c. Condensing osteitis
d. Pulpal sclerosis
Condensing osteitis
Condensing osteitis most frequently involves the _____ tooth.
a. mandibular premolar
b. mandibular molar
c. maxillary premolar
d. maxillary molar
mandibular molar
Sclerotic bone is seen below the apices of _____ teeth.
a. vital, carious
b. vital, noncarious
c. nonvital, carious
d. nonvital, noncarious
vital, noncarious
In health, the lamina dura around the roots of the teeth appears as a(n) _____ line.
a. dense radiolucent
b. dense radiopaque
c. intermittent radiolucent
d. intermittent radiopaque
dense radiopaque
The normal healthy alveolar crest is located approximately _____ mm apical to the cementoenamel junction.
a. 0.5 to 1.0
b. 1.0 to 1.5
c. 1.5 to 2.0
d. 2.0 to 2.5
1.5 to 2.0
The normal periodontal ligament space appears as a _____ line.
a. thin radiopaque
b. thin radiolucent
c. thick radiopaque
d. thick radiolucent
thin radiolucent
The periodontal ligament space is located between the root of the tooth and the:
a. Crest of alveolar bone
b. Lamina dura
c. Cementum
d. Spongy bone
Lamina dura
Radiographs permit the evaluation of _____ in the detection of periodontal disease.
a. pocket depth
b. soft tissue
c. inflammation
d. bone
bone
The _____ radiograph using the _____ technique is the film of choice for the evaluation of periodontal disease.
a. bite-wing; paralleling
b. bite-wing; bisecting
c. periapical; paralleling
d. periapical; bisecting
periapical; paralleling
The _____ of adjacent teeth can be used as a plane of reference in determining the pattern of bone loss present.
a. marginal ridge height
b. cementoenamel junctions (CEJs)
c. pulp chambers
d. thickness of cementum
cementoenamel junctions (CEJs)
Generalized bone loss occurs evenly throughout the dental arches, including greater than _____ of the sites involved.
a. 10%
b. 20%
c. 30%
d. 50%
30%
The severity of bone loss is measured by the:
a. Pocket depth
b. Recession
c. Amount of inflammation
d. Clinical attachment loss
Clinical attachment loss
Moderate bone loss is defined as a loss of _____ mm.
a. 1 to 2
b. 2 to 3
c. 3 to 4
d. 4 to 5
3 to 4
ADA Case Type II is:
a. Gingivitis
b. Mild or slight periodontitis
c. Moderate periodontitis
d. Advanced or severe periodontitis
Mild or slight periodontitis
Calculus _____ on a dental radiograph.
a. appears radiolucent
b. appears radiopaque
c. does not appear
d. appears dark or black
appears radiopaque
The definition of interpret is to:
a. Establish a diagnosis
b. Offer an explanation
c. Process radiographs
d. Mount radiographs
Establish a diagnosis
Radiographic interpretation enables the dental professional to play a vital role in the detection of _____ of the teeth and jaws that cannot be identified clinically.
1. lesions
2. diseases
3. conditions

a. 1, 2, 3
b. 1, 2
c. 1, 3
d. 1 only
1, 2, 3
To interpret films, the dental radiographer must be confident in the identification and recognition of the following:
1. Normal anatomy
2. Dental caries
3. Periodontal disease
4. Traumatic injuries and periapical lesions

a. 1, 2, 3, 4
b. 1, 2, 3
c. 2, 3, 4
d. 1, 2, 4
1, 2, 3, 4
In the dental setting, interpretation refers to an explanation of what is viewed on a radiograph, whereas the term diagnosis refers to the identification of disease by examination or analysis.
a. Both statements are true.
b. Both statements are false.
c. The first statement is true; the second statement is false.
d. The first statement is false; the second statement is true.
Both statements are true.
According to the text, ideally, dental radiographs should be reviewed and interpreted immediately after mounting:
a. Alone in a quiet room in the evening
b. In the presence of the patient
c. Even if processing and mounting take place a week after the films were exposed
d. Only when it is convenient
In the presence of the patient
In the dental setting, most films are examined in the:
a. Business office
b. Darkroom
c. Operatory
d. Reception room
Operatory
In the practice of dentistry, _____ is probably the most frequent reason for taking dental radiographs.
a. periodontitis
b. caries
c. impacted teeth
d. orthodontia
caries
A radiograph is most useful for detection of _____ caries.
a. buccal
b. lingual
c. occlusal
d. interproximal
interproximal
A carious lesion appears _____ on a dental radiograph.
a. radiopaque
b. radiolucent
c. white
d. clear
radiolucent
The _____ radiograph is the radiograph of choice for the evaluation of caries.
a. periapical
b. bite-wing
c. panoramic
d. occlusal
bite-wing
Caries found between two teeth is termed _____ caries.
a. occlusal
b. buccal
c. lingual
d. interproximal
interproximal
On a dental radiograph, interproximal caries is typically seen at or just below the:
a. Marginal ridge
b. Contact point
c. Cementoenamel junction
d. Crest of the alveolar bone
Contact point
_____ interproximal caries extends less than halfway through the thickness of enamel.
a. Incipient
b. Moderate
c. Advanced
d. Severe
incipient
A Class _____ lesion is an advanced interproximal lesion.
a. I
b. II
c. III
d. IV
III
_____ occlusal caries cannot be seen on a dental radiograph and must be detected clinically with an explorer.
(1) Incipient
(2) Moderate
(3) Severe
a. 1, 2, 3
b. 1, 3
c. 2, 3
d. 1 only
1 only
Caries that involves the buccal or lingual surface appears as a small, _____ area.
a. triangular radiolucent
b. circular radiolucent
c. triangular radiopaque
d. circular radiopaque
circular radiolucent
Which of the following statements is true of root surface caries?
a. Root surface caries involves the loss of enamel.
b. Root surface caries is clinically difficult to detect on exposed root surfaces.
c. Root surface caries appears as a cupped-out or crater-shaped radiolucency just below the cementoenamel junction (CEJ).
d. Root surface caries appears as a cupped-out or crater-shaped radiolucency just above the CEJ.
Root surface caries appears as a cupped-out or crater-shaped radiolucency just below the cementoenamel junction (CEJ).
Rampant caries is typically seen in children with _____ dietary habits or in adults with _____ salivary flow.
a. poor; increased
b. poor; a decreased
c. good; increased
d. good; a decreased
poor; a decreased
What is Periodontal Disease?
A group of diseases that affect the tissues around teeth; it may range from a superficial inflammation of the gingiva to the destruction of supporting bone and the periodontal ligament.
Localized bone loss occurs in isolated areas with ____% involved.
Less than 30%
Generalized bone loss occurs evenly throughout the dental arches, with ____% of the sites involved.
More than 30%
External resorption happens from __________.
The outside - in
Internal resorption happens from __________.
The inside - out
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