DENT 1050 Chapter 21 Flashcards

1
Q
  1. What does the term OCCLUSAL refer to?
A

Chewing surfaces of posterior teeth

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2
Q
  1. What size receptor is recommended for use with the occlusal technique in the adult patient?
A

Size 4

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3
Q
  1. What size receptor is recommended for use with the occlusal technique in the pediatric patient with primary dentition?
A

Size 2

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4
Q
  1. How is the patient’s head positioned before exposing a maxillary occlusal receptor?
A

Position the patient such that the maxillary arch is parallel to the floor

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5
Q
  1. What are the uses of the occlusal image?
A

to locate retained roots of extracted teeth; to locate supernumerary, unerupted, or impacted teeth; to locate foreign bodies in the maxilla or the mandible; to locate salivary stones in the duct of the submandibular gland; to locate and evaluate the extent of lesions in the maxilla or the mandible; to evaluate fractures of the maxilla or the mandible; to aid in the examination of patients who cannot open their mouths more than a few millimeters; to examine the area of a cleft palate; to measure changes in the size and shape of the maxilla or the mandible.

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6
Q
  1. State the vertical angulation used for the maxillary topographic occlusal projection.
A

+65 degrees

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7
Q
  1. State the vertical angulation used for the maxillary lateral occlusal projection.
A

+60 degrees

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8
Q
  1. State the vertical angulation used for the mandibular topographic occlusal projection.
A

-55 degrees

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9
Q
  1. State the vertical angulation used for the mandibular cross-sectional occlusal projection.
A

90 degrees

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10
Q
  1. State the vertical angulations used for the maxillary and mandibular pediatric occlusal projections.
A

maxillary: +60 degrees; mandibular: -55 degrees

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11
Q
  1. In Figure 21-14, is the labeled amalgam pit buccal or lingual? Why?
A

Buccal. The vertical angulation of the PID went down but the amalgam went up.

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12
Q
  1. In Figure 21-15, is the amalgam fragment between the maxillary second and third molars buccal or lingual? Why?
A

Buccal. The horizontal angulation of the PID went distal but the fragment went mesial.

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13
Q
  1. In Figure 21-16, is the impacted canine located buccal or lingual to adjacent teeth? Why?
A

Buccal. The horizontal angulation of the PID went distal but the impacted canine went mesial.

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14
Q
  1. In Figure 21-17, is the gutta percha in the labeled canal located on the buccal or lingual side of the tooth? Why?
A

Lingual. The horizontal angulation of the PID went distal and the canal went distal.

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15
Q
  1. In Figure 21-18, is the impacted canine located buccal or lingual to adjacent teeth? Why?
A

**Buccal. The horizontal angulation of the PID went mesial and the impacted canine went distal.

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