Radiation Benefits

Question 1

Patients who are fearful of the risks
of dental radiography need to be
made aware of
(3)

Answer 1

–The magnitude of the risks (small)
–What we do to minimize risks
(radiation protection for the patient)
–The benefits of the radiographic
examination

Question 2

Benefits of Dental Radiography
(8)

Answer 2

• Interproximal 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 3

Bitewing radiographs & caries
* Compared to visual examination
(3)

Answer 3

–Digital bitewings identified 3.2 times more carious
lesions
–Conventional bitewings identified 2.9 times more
carious lesions
–Of the additional decay identified
* 6% was occlusal decay
* 94% was proximal decay

Question 4

Severity (depth) and extent of caries

Answer 4

• Undermined enamel with gross loss of tooth
  structure

Question 5

Periodontal bone loss (i.e., alveolar crest)
Bone loss (3)

Answer 5

Generalized, localized, horizontal, vertical

Question 6

Li Root of Mandibular First Molars
(2)

Answer 6

• 20% incidence in
  Asians in a Chinese
  population (Hong
  Kong and Taiwan)
• 10-12% in native
  North American
  populations

Question 7

Hyperdontia
multiple teeth
Most common in — area

Answer 7

premolar