Fig. 3
From: The effect of rapid maxillary expansion on the upper airway’s aerodynamic characteristics
Description of the pressure of 4 planes defined on the CFD model. Definition of the four planes in the sagittal view: plane 1, paralleled the inlet plane through the posterior point of middle turbinate; plane 2, paralleled the outlet plane through the inferior point of plane 1; plane 3, paralleled the outlet plane through the tip of the soft palate; plane 4, paralleled the outlet plane through the tip of the epiglottis.The right graph shows the distribution of the pressure of each plane in the posterior view