Fig. 3From: A study on the association between accessory maxillary ostium and maxillary sinus mucosal thickening using cone beam computed tomographyAxial CBCT section showing method used to determine the location of AMO in antero-posterior dimension (D). The distance (D) is obtained by measuring the distance between 2 horizontal lines F1-F (passing through the most anterior point of the AMO) and E1- E (passing through the most anterior point of the sinus)Back to article page