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Question 1

What are the benefits of dental radiography?

Answer 1

• Inter-proximal caries diagnosis
• Severity (depth) and extent of caries
• Periodontal bone loss (i.e., alveolar crest)
• Root configuration
• Periradicular pathology
• Basal bone pathology in jaws
• Location of 3rd molar roots & IAC
• anatomy assessment for implants

Question 2

Which identified more carious lesions? (Digital BW vs Conventional BW) How much more likely are you to ID them using these?

Answer 2

Digital BW = 3.2x more
Conventional = 2.9x more

Question 3

What are common basal bone pathologies identified using X-rays

Answer 3

Hyperdontia
Neoplasms
Systemic Disease

Question 4

What is the maximum diameter of the exit side beam collimation?

Answer 4

2.75”

Question 5

What are the two mandated dose reduction mechanisms in the x-ray tube head?

Answer 5

1. Filtration
   <50 = 0.5 mm
   50-70 = 1.5 mm
   >70 = 2.5 mm
2. Collimation

Question 6

What are the four optional dose reduction mechanisms in the x-ray tube head?

Answer 6

1. Rectangular collimator
2. High kV generator
   (high Kv=lower dose, but bigger and heavier)
3. Constant potential (DC) fully rectified
4. Increased focal length
   - 30% less head volume
   - Reduced effective dose
   - Sharper image