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Unit 2 163 Pima
oral rad PIMA
Question | Answer |
---|---|
Ideal temp for developer | 68 degrees |
if temp for developer is low x-rays will be | lighter |
if temp of developer is high it | allow shorter time for developing |
main purpose for fixer | to remove the silver halide crystals which has been exposed to x-ray |
develop time is 5 mins at 68 degrees fixing time will be | 10min |
for routine film processing the best method is | time-temp processing |
processing solutions test | step wedge device |
safelight placed | 4ft |
fim emilsion hardend during | drying |
purpose of fast speed radiographic film | short exposure time |
T or F film speed is determined by silver halide crystals in emulsion, The larger the size the faster the speed faster... | true |
periapical films show | entire tooth including apex, show the supporting structure around the tooth, come in various sizes |
purpose of led foil is to | protect the film from back scattered radiation |
latent image | before exposure |
film size 1 used for | FMX of children under 6 |
density of radiographis to dark why? | overexposing and overdeveloping |
correct processing order | develop, fix, rinse, wash |
thin black lines | static electricity |
white lines or marks | scratched emulsion |
black shadow | light leak |
smudged film | fingermarks |
reticulation | different temp. of developing and rinse waters |
white spots | premature fixer |
brownish-yellow stains | improper washing |
dark spots | premature developer |
fixing solution disposed by | label hazerdous have waste disposal company dispose of it |