6 Troubleshooting
206718 rev 9
SOREDEX 71
Problem Possible cause Solution
Black shadow over maxillary
teeth apex area.
Tongue was not against the
roof of palate.
Ask patient to swallow
and place tongue against
the roof of palate during
the exposure.
Problem Possible cause Solution
TMJ's exposed on different
heights on image. Bilateral
distortion in molar and pre-
molar regions.
1. Patient tilted to one side
2. Midsagittal light line not
obeyed.
1. Check midsagittal
plane and center pa-
tient's head.
2. Check midsagittal
plane and center pa-
tient's head.
Problem Possible cause Solution
Rows of teeth exposed too
high. TMJ's cut off.
1. Chin was not resting on
chin support
2. Patient positioned too high
1. Check patient posi-
tioning and type of bite
fork rod.
2. Check patient posi-
tioning and type of bite
fork rod.
Problem Possible cause Solution
Rows of teeth exposed too
low. Mandible not exposed
completely to the image.
Chin rest was not used with
bite fork.
Install chin rest.
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