Review

Question 1

How are double images formed?

Answer 1

• Midline structures
• object b/w Center of Rotation and receptor
  
  • posterior to Center of rotation
• interpreted by x-ray twice

Question 2

Identify Possible Double Image Structures

Answer 2

• Hard Palate
• Soft Palate
• Uvula
• Hyoid Bone
• Epiglottis
• C-Spine

Question 3

How is a ghost image formed?

Answer 3

• Object b/w center of rotation and X-ray tube

Question 4

Identify Possible ghost image structures

Answer 4

• Opposite side of the real image
  
  • higher
  • blurry
  • larger
• Mandible
  
  • ramus/body/angle
• Hard Palate
• Hyoid Bone
• C Spine
• Metal Accessories
  
  • Earrings
  • hairpins
  • necklaces

Question 5

Chin tilted up

Answer 5

• Flat or inverted occlusal plane
• distorted mandible
• Ghost hard palate over maxillary teeth

Question 6

Chin tilted down

Answer 6

• occlusal plane-exaggerate smile (Halloween)
• overlapped teeth
• Superior mandibular condyles
• Bottom of mandible might be cut off

Question 7

Rotate

Answer 7

• Magnification:
  
  • side patient is rotated toward
    
    • farther from receptor
• Minification:
  
  • opposite side of rotation
    
    • closer to receptor

Question 8

if you rotate right

Answer 8

• Wider:
  
  • right mandible
  • right posterior molars
  • overlap of premolars