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Oral Surg Oral Med Oral Pathol Oral Radiol. 2013 Apr;115(4):550-7. doi: 10.1016/j.oooo.2013.01.001.

Visualization of the superior and inferior borders of the mandibular canal: a comparative study using digital panoramic radiographs and cross-sectional computed tomography images.

Author information

1
Oral and Maxillofacial Radiology, Graduate School, Tokyo Medical and Dental University, Tokyo, Japan.

Abstract

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.

PMID:
23522648
DOI:
10.1016/j.oooo.2013.01.001
[Indexed for MEDLINE]

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