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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 |