processing and technical errors study chart

Question 1

film placement
appearance: cuts off occlusion, cuts off premolar
error?

Answer 1

did not put rinn together right- placed film incorrectly

Question 2

cone cut
appearance?
error?

Answer 2

x ray beam not centered radiopaque area on film

improper rinn; has to go in center

Question 3

overlapping appearance

Answer 3

cant see interproximals; radiopaque, overlapping of crowns

Question 4

overlapping error

Answer 4

incorrect horizontal angulation

Question 5

reversed film appearance

Answer 5

tire tracks on film

Question 6

reversed film error

Answer 6

white not towards tubehead, reversed film

Question 7

elongation appearance and error

Answer 7

long teeth; not enough vertical angulation

Question 8

foreshortening appearance and error

Answer 8

short, squatty teeth; excessive vertical elongation

Question 9

super imposed image appearance

Answer 9

2 different teeth

Question 10

superimposed image error

Answer 10

use same film twice

Question 11

double exposure appearance and error

Answer 11

dark radiograph; pressing exposure button twice

Question 12

blurred image appearance and error

Answer 12

blurred; patient /tubehead moved

Question 13

excessing bending/film creasing appearance and error

Answer 13

crescent shaped black lines; bending film too much

Question 14

underexposed.underdeveloped appearance and error

Answer 14

too light; ma or kvp too low, or solution too cold

Question 15

film exposed to light appearance and error

Answer 15

radiolucent area; exposed to light in dark room, opening film in light

Question 16

developer spots appearance and error

Answer 16

dark spots on film; developer contamination

Question 17

fixer spots appearance and error

Answer 17

white spots; fixer contamination- air bubble

Question 18

insufficient rinsing/incomplete fixing appearance and error

Answer 18

yellow/brown stain; depleted wash or depleted fixer

Question 19

films stuck together appearance and error

Answer 19

green tinge; overlapped during processing

Question 20

dirty rollers appearance and error

Answer 20

streaks/ light lines across film; not cleaning rollers

Question 21

static electricity appearance and error

Answer 21

spider on tooth/ dark lines looks like tree; opening film too fast

Question 22

lead apron appearance and error

Answer 22

radiopaque area; thyroid collar in the way(beam blocked by collar)

Question 23

overexposed/overdeveloped appearance and error

Answer 23

dark film; excessive exposure/ developing time;;;; solution too warm, kvp and ma and time too high, light leaks

Question 24

incomplete submersion in developer appearance and error

Answer 24

gray area; did not emmerse all the way down in solution

Question 25

no image on film appearance and error

Answer 25

show up as blue film; never exposed

Question 26

scratches appearance and error

Answer 26

white lines; scratch with fingernails, poor handling error(poor handling)

Question 27

film fog appearance and error

Answer 27

grainy/gray film; expired film(contrast decreased)