Radiographic anatomy review and Principles of radiographic interpretation

Question 1

What is the definition of Differential Diagnosis?

Answer 1

• Orderly sequential approach
• Gathering and analyzing data
• Knowledge and experience enable recognition of abnormal findings
• Include and/or exclude disease processes based on an educated assessment of the process

Question 2

What is the first principle of Radiographic Interpretation?

Answer 2

Proper Imaging Technique

Manual and Cerebral

Question 3

In a maxillary premolar PA, where should the receptor be placed?

Answer 3

• Parallel to the B and Li planes of premolars
• parallel to long axis of premolars
• Anterior edge of receptor includes distal ½ of canine, the premolars and some of molars
• Horizontal angle directed through distal of canine/premolar, premolar/premolar and the 2nd premolar/ molar contacts

Question 4

What anatomical structures does the anterior edge of the receptor include for maxillary premolar PA?

Answer 4

Distal ½ of canine, the premolars, and some of molars.

Question 5

What is the horizontal angle directed through in a maxillary canine PA receptor?

Answer 5

Mesial contact of canine.

Question 6

In a maxillary canine PA, where should the receptor be placed?

Answer 6

• Receptor placed parallel to B and Li planes of canine
• Receptor parallels long axis of canine
• Canine is within middle two 1/4s of mesiodistal width
• Horizontal angle directed through mesial contact of canine

Question 7

What does ‘the mind doesn’t see what it does not know’ imply in the context of Differential Diagnosis?

Answer 7

Knowledge and experience enable recognition of abnormal findings.

Question 8

Fill in the blank: The eye cannot see what the mind does not _______.

Answer 8

[know].

Question 9

What are the key components of Radiographic Description?

Answer 9

• Single vs Multiple
• Location
• Relative proximity to adjacent structures
• Size in demensions
• Outline (well-demarcated vs diffuse; corticated vs non corticated)
• Density (radiolucent, radiopque, mixed)

Question 10

What are quantity radiographic descriptions?

Answer 10

1. single vs multiple (a.k.a.- monostotic vs polyostotic)
2. unilateral vs bilateral

Question 11

What are quality radiographic descriptions?

Answer 11

1. Location: right vs left; anterior vs posterior; localize to area of dental arch
2. Size:dimensions in mm. (diameter, length, greatest dimensions, etc…)
3. Relative Proximity (dimensions) to adjacent structures – supplements measurements
4. Outline: well-demarcated vs diffuse; smooth vs irregular; corticated vs non corticated
5. Density: radiolucent, radiopaque or mixed; mild, moderate, or intense

Question 12

What types of radiolucencies are described in Oral Radiology?

Answer 12

• Periapical Radiolucencies
• Pericoronal Radiolucencies
• Inter-radicular or Solitary Radiolucencies
• Multilocular Radiolucencies
• Ragged Radiolucencies
• Generalized Rarefactions
• Mixed Radiolucent-Radiopaque Lesions
• Periapical Radiopacities
• Solitary Radiopacities
• Generalized Radiopacities
• Radiopacities outside the jaws

Question 13

What does the term ‘homogeneous density’ refer to in the context of radiographic interpretation?

Answer 13

It indicates that the radiopacity has a consistent appearance throughout.

Question 14

What is a key consideration in gathering and analyzing data for Differential Diagnosis?

Answer 14

Be aware of characteristic radiographic appearances and manifestations.