Premolar periapical radiograph

  • Horizontal overlapping does not extend to the CEJs of adjacent teeth
  • Mesial and distal aspects of each tooth entirely visible on at least one radiograph
  • At least 2mm of bone visible beyond lamina dura of all erupted teeth
  • Distal 1/2 of the canine recorded (must see beyond DEJ on distal of canine)
  • Buccal and lingual cusps visible
  • Images of root longer than images of crown (> 1:1 root/crown ratio)