Exam 1.9: The Occlusal Radiograph Examination Flashcards Preview

D2: 621 Radiology > Exam 1.9: The Occlusal Radiograph Examination > Flashcards

Flashcards in Exam 1.9: The Occlusal Radiograph Examination Deck (23)
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1

What is an occlusal radiograph

An ancillary image which supplements information obtained from PAs

2

What size film is used of an occlusal radiograph

4

3

What are some reasons for prescribing an occlusal image

Localizing foreign bodies
Determination of the precise buccal/lingual location of roots or impacted teeth
Localization of soft tissue calcifications
Trismus patients
Cortical Thinning
Evaluation of the walls of the maxillary sinus

4

Where is the film placed

B/w the occlusal surfaces of the teeth so that the film lies in the plane of occlusion

Tube side of the film is placed toward the jaw being examined


5

What is the patient positioning for an Anterior Maxillary Occlusal Projection

Sitting upright in chair with ala-tragus line parallel to floor

6

What is the film positioning for the anterior maxillary occlusal shot

Slide packet back in mouth until the leading edge touches the raphe bilaterally, have patient gently close

7

What is the cone positioning for the anterior maxillary occlusal shote

Central ray at vertical angulation of 65 degrees through the bridge of the nose

8

What is best visualized by the anterior maxillary occlusal shot?

Anterior palate from canine to canine and nasal fossa
There will be lots of overlap of the posterior teeth

9

What are some pathologies that the anterior maxillary occlusal image is great for

Radiopacity in cleft palate
Odontogenic neoplasm that a PA wouldn't be able to locate precisely

10

What is the patient positioning for the Posterior Maxillary occlusal radiograph

Sitting upright in the chair, with ala-tragus line parallel to floor

11

What is the film positioning for the PMOR

Insert film white side up centered over the side of the arch of interest, back to the raphe on that side

12

What is the cone positioning for the PMOR

Vertical angulation of 60 degrees through the area of infraortbital foramen

13

What radiograph best visualized the nasolacrimal canals, zygomatic process, anteroinferior maxillary sinus, cortices on the side of interest

Posterior Mx Occlusal Radiograph

14

What are some specific used of the PMOR

Spatial localization of impacted teeth
Demonstrates that there is approximately 2 mm of bone between the tip of the endosseous implant and the floor of the maxillary sinus

15

What is a ground glass texture to expanded posterior ridge a classic sign of?

Fibrous dysplasia

16

What is the patient position for the anterior mandibular occlusal projection

Patient upright in chair with headrest tipped back

17

Whaat is the film positioning for the AMOP

White side down centered over the anterior mandible

18

What is the cone positioning for the AMOP

Central ray -55 degrees through the tip of the chin

19

What projections best visualized the anterior mandible from canine to canine, inferior cortex of anterior mandible, and the genial tubercles

Anterior Mandibular Occlusal Projection

20

What is the patient positioning for the Posterior Mandibular Occlusal Projection

Patient should be in supine position with the headrest back

21

What is the film position for the PMOP

Shift film in packet to affected side

22

What is the cone position for the PMOP

Central Ray should enter at 0 degrees
Perpendicular to film packet

23

What type of radiographs would you use to reveal a sialolith in wharton’s duct

Posterior mandibular occlusal radiograph