Fig. 4

CBCT images of case 2 patient. An obvious discontinuity of the inferolateral cortex of the nasal cavity and oronasal fistula, which is observed as a tissue defect on panoramic radiography, is observed due to explantation a. Moreover, the residual fixtures on both sides of the maxilla perforated the nasal cavity and are placed just medial to the maxillary sinus a, b