Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
35 Cards in this Set
- Front
- Back
|
True or False It is legal for the dental hygienist to make the final interpretation but not the final diagnosis. |
False
|
|
|
Luxation is defined as?
a. Abnormal displacement of teeth b. Complete displacement of a tooth from alveolar bone c. Extraction d. Resorption of tooth |
A. Abnormal displacement of teeth
|
|
|
Which of the following is NOT used to hold the film in the mouth with bisecting-angle technique?
a. XCP bite block b. Stabe bite-block c. EEZZEE grip/Snap-A-Ray d. Rinn XCP film holder and aligning ring |
d. Rinn XCP film holder and aligning ring |
|
|
The plane that divides in half the angle formed by the film and the long axis of the tooth is called the:
a. Hypotenuse b. Imaginary bisector c. Isometric bisector d. All of the above |
B. Imaginary bisector
|
|
|
In the bisecting technique, if the PID (and resulting x-ray beam) is lined up with the tooth which of the following is likely to result?
a. Elongation b. Foreshortening c. Nothing, this is correct |
A. Elongation
|
|
|
Which of the three primary periapical radiolucencies require(s) root canal therapy or extraction as part of tx?
a. Periapical granuloma b. Periapical cyst c. Periapical abcess d. All of the above |
D. All of the above
|
|
|
Which stage of interproximal caries extends to or through the DEJ and into dentin, but not more than 1/2 way through the dentin?
a. Incipient Interproximal Caries b. Moderate Interproximal Caries c. Advanced Interproximal Caries d. Severe Interproximal Caries |
C. Advanced Interproximal Caries
|
|
|
The complete displacement of a tooth from the alveolar socket is called:
a. Avulsion b. Luxation c. Propulsion d. Expulsion |
A. Avulsion
|
|
|
Which of the following is (are) true concerning pulp stones?
a. They are generally asymptomatic b. Root canal therapy and/or extraction are the treatment options of choice c. Caused by trauma to the pulp d. All of the above |
A. They are generally asymptomatic
|
|
|
Which of the following periapical radiopacities is found at the apex of a nonvital tooth?
a. Sclerotic bone b. Condensing osteitis c. Hypercementosis d. Idiopathic Periapical Osteosclerosis e. B and D |
B. Condensing osteitis
|
|
|
Which of the following is (are) true about root fractures?
a. Less common than crown fractures b. If the x-ray beam is parallel with the plane of the fracture, then the fracture appears as a sharp radiolucent line on the film c. The space between the 2 fractured segments becomes more evident with time d. All of the above |
D. All of the above |
|
|
The following are true about external resorption EXCEPT:
a. Most often affects the apical area of the tooth b. Roots will appear blunted (and shorter) c. Can be caused from trauma or idiopathic reasons d. The lamina dura and surrounding bone will also be affected e. None of the above (all of the above are true) |
d. The lamina dura and surrounding bone will also be affected
|
|
|
The type of interproximal caries that extend mroe than halfway through the enamel but do not involve the DEJ are:
a. Incipient b. Moderate c. Advanced d. Severe |
B. Moderate
|
|
|
The type of caries that occur adjacent to existing restorations and appear on a film as a radiolucent area just below (or adjacent to) the restoration are:
a. Refractory caries b. Restoration caries c. Recurrent caries d. None of the above |
C. Recurrent caries
|
|
|
Resorption that occurs due to shedding of primary teeth is referred to as:
a. Primary resorption b. Pathologic resorption c. Physiologic resorption d. Characteristic resorption |
C. Physiologic resorption
|
|
|
When a tooth is displaced into the bone we have:
a. Intrusion b. Extrusion c. Avulsion d. All of the above |
A. Intrusion
|
|
|
Which of the following pathologies is associated with a non vital tooth?
a. Pulp stones b. Pulpal obliteration c. Sclerotic bone d. Hypercementosis |
B. Pulpal obliteration
|
|
|
Which of the following is the correct order from most radiopaque to least?
a. Gold, stainless steel, gutta percha, acrylic b. Gutta percha, acrylic, gold, stainless steel c. Gold, stainless steel, acrylic, gutta percha d. Gutta percha, gold, stainless steel, acrylic |
a. Gold, stainless steel, gutta percha, acrylic |
|
|
A kVp at the lower end of the scale (65 kVp) is optimal for:
a. Detecting periodontal disease b. Detecting caries c. Obtaining low contrast d. None of the above |
B. Detecting caries
|
|
|
Which of the following terms is a type of radiolucent lesion?
a. Target lesion b. Multifocal confluent c. Ground glass d. Moth-eaten pattern |
D. Moth-eaten pattern
|
|
|
Unilocular lesions tend to be:
a. Small and expansible b. Small and nonexpansile c. Large and expansile d. Large and nonexpansile |
B. Small and nonexpansile
|
|
|
A large, well-adapated radiopaque restoration with smooth borders is probably:
a. Silver amalgam b. Gold c. Porcelain d. Composite |
B. Gold
|
|
|
Post and core restorations are often seen in ________ treated teeth.
a. Periodontally b. Orthodontically c. Endodontically d. Nonendodontically |
C. Endodontically
|
|
|
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. Decay b. Cement c. An air pocket d. A metal substructure |
B. Cement
|
|
|
Diatorics are found in:
a. Silver point endodontic fillings b. Gutta percha endodontic fillings c. Restorations as an anchoring device d. Anterior porcelain denture teeth |
D. Anterior porcelain denture teeth
|
|
|
Which radiogaphic technique is recommended for taking PA's on a child?
a. Paralleling technique b. Bisecting technique c. Cross-sectional technique d. Children are too young to obtain PA's instead a pano should be taken |
B. Bisecting technique
|
|
|
Which of the following describes the proper direction of the central ray in the bisecting technique?
a. 90 degrees to the long axis of the tooth b. 90 degrees to the receptor and long axis of the tooth c. 90 degrees to the receptor d. 90 degrees to the imaginary bisector |
D. 90 degrees to the imaginary bisector
|
|
|
Which of the following describes the distance between the receptor and the tooth in the bisecting technique?
a. The receptor is placed as close as possible to the tooth b. The receptor is placed away from the tooth and toward the middle of the oral cavity c. The receptor is placed parallel to the tooth d. None of the above |
A. The receptor is placed as close as possible to the tooth
|
|
|
Horizontal angulation refers to the placement of the positioning-indicating device (PID) in a(n) _____ plane. Vertical angulation refers to the positioning of the PID in a(n) _____ plane.
a. side-to-side; side-to-side b. side-to-side; up-and-down c. up-and-down; side-to-side d. up-and-down; up-and-down |
b. side-to-side; up-and-down
|
|
|
Foreshortening images refer to images of the teeth that appear ______. Foreshortening of images results from ______ vertical angulation.
a. shortened; insufficient b. shortened; excessive c. too long; insufficient d. too long; excessive |
b. shortened; excessive
|
|
|
Which of the following techniques use the same principles of horizontal angulation? 1. Paralleling, 2. Bisecting, 3. Bite-wing.
a. 1,2,3 b. 1,2 c. 2,3 d. 1,3 |
a. 1,2,3 |
|
A is? a. Central ray b. Longitudinal axis of tooth c. Imaginary bisecting line d. Plane of film |
B. Longitudinal axis of tooth
|
|
B is? a. Central ray b. Longitudinal axis of tooth c. Imaginary bisecting line d. Plane of film |
C. Imaginary bisecting line |
|
C is? a. Central ray b. Longitudinal axis of tooth c. Imaginary bisecting line d. Plane of film |
D. Plane of film |
|
D is? a. Central ray b. Longitudinal axis of tooth c. Imaginary bisecting line d. Plane of film |
A. Central Ray |
