Exam (elaborations)
CSCE Dental Hygiene Board Review (1).
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CSCE Dental Hygiene Board Review (1).
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CSCE Dental Hygiene Board ReviewForeshortening - Too MUCH vertical angulation; decrease angulation
Elongation - Too LITTLE vertical angulation; increase angulation
Herringbone, "waffle pattern" - Backward placement of film; place the film with the
smooth, white side next to the tooth and the bumpy side away (there is a lead foil on the
backside of the film packet to prevent backscatter)
Cracked emulsion - Sudden temp. changes between developer and fixer
Darker areas - Developing solution touches film before processing procedure
Light areas - Fixer solution touches film before processing procedure
Yellow/brown stains on film - Exhausted solutions or insufficient washing
Straight white border on film - Developer CUTOFF caused by incomplete immersion of
film into developer
Straight black border on film - Fixer cutoff caused by incomplete immersion of film into
fixer
Outline border of another film - Films stuck together in solutions
White spots on film - Air bubbles trapped during processing
Thin, black, branchlike lines on film - Static lines caused by low humidity and opening
film packet too quickly
Fogged films - Improper safelight, light leaking into darkroom, outdated film
"V" or shark's fin on PANO - Lead collar above line; lower collar position
Exaggerated smile in PANO - Chin tipped too far down; reposition the chin
Flat smile in PANO - Chin tipped too far up; resposition chin
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