Abstract
The purpose of this study was to determine the accuracy of panoramic radiography in identification of maxillary sinus septa. Out of 68 sinuses were radiographically examined using both panoramic and computerized tomographic radiographs (CT scan). Using CT scan, 24 (35.9%) out of 68 cases maxillae showed at least one septum, 22 sinuses (32.3%) showed one septum, whereas two sinuses (2.9%) exhibited two septa. Panoramic radiograph led to a false diagnosis regarding the presence or absence of sinus septa in 18 of 68 sinuses (26.5%). On the other hand, they gave negative diagnosis of sinus septa in 12 of 24 septa (50%). There was fully agreement between the two methods (positive septa) only in 12 of 24 septa (50%). We cannot depend on panoramic radiograph for the detection of sinus septa because it can lead to false or negative results.
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