SCAN EXAM 17
3. Using the system
If the exposure time is too long images
will be too dark or will show patient move-
ment. These images will not be good
enough for accurate diagnostic examina-
tion.
The exposure values table below should
only be used as a guide.
Recommended exposure values (s) for DC x-ray units*
60 kV, 7 mA 70 kV, 7 mA
short cone long cone short cone long cone
Adult Child Adult Child Adult Child Adult Child
Bitewing 0.25 0.16 0.50 0.32 0.12 0.08 0.25 0.16
Maxillary incisor 0.20 0.12 0.40 0.25 0.10 0.06 0.20 0.12
Maxillary cuspid 0.20 0.12 0.40 0.25 0.10 0.06 0.20 0.12
Maxillary molar 0.30 0.20 0.63 0.40 0.16 0.10 0.33 0.20
Occlusal 0.25 0.16 0.50 0.32 0.12 0.08 0.25 0.16
Mandib. incisor 0.20 0.12 0.40 0.25 0.10 0.06 0.20 0.12
Mandib. cuspid 0.25 0.16 0.50 0.32 0.12 0.08 0.25 0.16
Mandib. molar
0.25 0.16 0.50 0.32 0.12 0.08 0.25 0.16
*For AC x-ray units increase the exposure times by
about 30%
3. Protect yourself from radiation and
take the exposure.
4. After the exposure remove the sealed hy-
giene bag from the patient’s mouth.
CAUTION:
If there is a risk of cross contamination,
wash, disinfect and dry the hygiene bag
before opening it.
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