• N Kocak, E Alpoz, and H Boyacioglu.
• Department of Oral and Maxillofacial Radiology, Faculty of Dentistry, Mersin University, Mersin, Turkey.
• Niger J Clin Pract. 2018 Aug 1; 21 (8): 954-959.

ObjectiveThe purpose of this study was to evaluate the effect of periapical lesion size on the degree of mucosal thickening of maxillary sinus and thickness of apical bone using cone-beam computed tomography.Materials And MethodsIn Group 1 (teeth with apical lesions), diameter of apical lesion, width of apical bone, thickness of Schneiderian membrane; for Group 2 (teeth without apical lesions), width of apical bone in long axis of root and thickness of Schneiderian membrane were measured on coronal and sagittal images.ResultsMann-Whitney U-test revealed no significant difference between two groups regarding mucosal thickening and apical bone measurements (P > 0.05). Wilcoxon signed-rank test showed no significant difference between the measurements in sagittal and coronal slices (P > 0.05).ConclusionResults of the present study showed that Schneiderian membrane near the maxillary premolars and molars with apical lesions is not significantly thicker compared to teeth without apical lesions.

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