Fig. 1From: Schneiderian membrane thickness variation following endodontic procedures: a retrospective cone beam computed tomography study(a-d). Image showing the pre- and post treatment measurements on the coronal (a,c) and sagittal cone beam computed tomography slices (b,d) related to an upper left second molar area with the relative measurement of the Schneider membrane thickness in mm before root canal re-treatment (a,b) and after one year follow-up (c,d)Back to article page