Objective
To evaluate the visibility of the superior and inferior borders of mandibular canal
using panoramic radiography (PR) and cross-sectional computed tomography (CT) images.
Study design
Digital panoramic images and cross-sectional CT images of 100 patients were evaluated.
The mandibular canal was divided into 4 areas of equal width (1-4), from anterior
to posterior. The visibility of the superior and inferior borders was assessed using
a 5-point visibility scoring system, with lower scores for worse visibility.
Results
For both modalities, the superior border showed significantly lower score than the
inferior border in all areas. For the superior border, areas 1, 2, and 3 all showed
significantly lower scores than area 4 for PR, whereas only area 1 showed a lower
score than area 4 for CT.
Conclusions
The visibility of the superior border was very poor on panoramic images. The use of
cross-sectional CT images remarkably improved this poor visualization.
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Article info
Publication history
Accepted:
January 2,
2013
Received in revised form:
November 6,
2012
Received:
May 10,
2012
Footnotes
N. Kamrun and A. Tetsumura contributed equally to this work.
Identification
Copyright
© 2013 Elsevier Inc. Published by Elsevier Inc. All rights reserved.
