Dental Radiology Purpose and |||\\\ |||\\\ |||\\\ |||\\\
Technique exam with correct answers |||\\\ |||\\\ |||\\\ |||\\\
Elongation - correct answer✔✔image looks longer |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
cause: inadequate vertical angulation
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correction: increase vertical angulation |||\\\ |||\\\ |||\\\
Foreshortening - correct answer✔✔CR is directed at too steep of angle and/or perpendicular |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
to receptor
|||\\\
cause: excessive vertical angulation
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correction: decrease vertical angulation |||\\\ |||\\\ |||\\\
Distortion - correct answer✔✔film is bent when placed into oral cavity
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
Horizontal Angulation - correct answer✔✔PID placed central ray perpendicular to horizontal
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
plane
side-to-side movement of tube head |||\\\ |||\\\ |||\\\ |||\\\
open contacts or thin black line between teeth is visible when done right
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
Errors: overlapping when placed too far mesial or distal
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
Vertical Angulation - correct answer✔✔up and down positioning of PID
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
Purpose of CBCT (cone-beam computed tomography) - correct answer✔✔evaluate diseases of
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
jaw, dentition, bony structure of face, nasal cavity & sinuses
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
Purpose of Panoramic - correct answer✔✔two-dimensional
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
, reveal position of wisdom teeth |||\\\ |||\\\ |||\\\ |||\\\
captures mouth, structures tissue |||\\\ |||\\\ |||\\\
Purpose of Cephalometric - correct answer✔✔side view of head |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
oral structure, nasal & sinus passageway
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\
helps to see airway problems, jaw position, TMJ problems
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
Purpose of Periapical - correct answer✔✔shows entire tooth (crown to root tip)
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
detects decay, gum disease, bone loss, other abnormalities
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
Purpose of Bitewing - correct answer✔✔shows upper and lower |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
detects decay between teeth, any changes that occur below gum line
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
Purpose of Full Mouth Series - correct answer✔✔18-20 x-rays |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
4 bitewings
|||\\\
complete picture of mouth; teeth, gums, jaw, bone |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
checks for potential issues |||\\\ |||\\\ |||\\\
plan treatment for existing
|||\\\ |||\\\ |||\\\
Purpose of Occlusal - correct answer✔✔detects issues in floor or roof
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
diagnose fractured or impacted teeth |||\\\ |||\\\ |||\\\ |||\\\
evaluate roots for front teeth |||\\\ |||\\\ |||\\\ |||\\\
identify cysts, abscesses, jaw fractures |||\\\ |||\\\ |||\\\ |||\\\
Extraoral technique (panoramic) - correct answer✔✔shows entire maxilla & mandible one
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
image
Technique exam with correct answers |||\\\ |||\\\ |||\\\ |||\\\
Elongation - correct answer✔✔image looks longer |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
cause: inadequate vertical angulation
|||\\\ |||\\\ |||\\\
correction: increase vertical angulation |||\\\ |||\\\ |||\\\
Foreshortening - correct answer✔✔CR is directed at too steep of angle and/or perpendicular |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
to receptor
|||\\\
cause: excessive vertical angulation
|||\\\ |||\\\ |||\\\
correction: decrease vertical angulation |||\\\ |||\\\ |||\\\
Distortion - correct answer✔✔film is bent when placed into oral cavity
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
Horizontal Angulation - correct answer✔✔PID placed central ray perpendicular to horizontal
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
plane
side-to-side movement of tube head |||\\\ |||\\\ |||\\\ |||\\\
open contacts or thin black line between teeth is visible when done right
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
Errors: overlapping when placed too far mesial or distal
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
Vertical Angulation - correct answer✔✔up and down positioning of PID
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
Purpose of CBCT (cone-beam computed tomography) - correct answer✔✔evaluate diseases of
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
jaw, dentition, bony structure of face, nasal cavity & sinuses
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
Purpose of Panoramic - correct answer✔✔two-dimensional
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
, reveal position of wisdom teeth |||\\\ |||\\\ |||\\\ |||\\\
captures mouth, structures tissue |||\\\ |||\\\ |||\\\
Purpose of Cephalometric - correct answer✔✔side view of head |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
oral structure, nasal & sinus passageway
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\
helps to see airway problems, jaw position, TMJ problems
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
Purpose of Periapical - correct answer✔✔shows entire tooth (crown to root tip)
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
detects decay, gum disease, bone loss, other abnormalities
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
Purpose of Bitewing - correct answer✔✔shows upper and lower |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
detects decay between teeth, any changes that occur below gum line
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
Purpose of Full Mouth Series - correct answer✔✔18-20 x-rays |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
4 bitewings
|||\\\
complete picture of mouth; teeth, gums, jaw, bone |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
checks for potential issues |||\\\ |||\\\ |||\\\
plan treatment for existing
|||\\\ |||\\\ |||\\\
Purpose of Occlusal - correct answer✔✔detects issues in floor or roof
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
diagnose fractured or impacted teeth |||\\\ |||\\\ |||\\\ |||\\\
evaluate roots for front teeth |||\\\ |||\\\ |||\\\ |||\\\
identify cysts, abscesses, jaw fractures |||\\\ |||\\\ |||\\\ |||\\\
Extraoral technique (panoramic) - correct answer✔✔shows entire maxilla & mandible one
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
image
