Computational Fluid Dynamics Analysis of Nasal Airway Changes after Treatment with C-Expander

Table 1

Definition of measurement indexes.

Parameter	Definition
Midpalatal width in the canine (MPWC)	Distance between the left and right midpalatal sutures in the canine
Midpalatal width in the molar (MPWM)	Distance between the left and right midpalatal sutures in the first molar
Intercanine maxillary width (CMW)	Distance between the left and right cusps of the maxillary canine
Intermolar maxillary width (MMW)	Distance between the left and right maxillary bone convexities in the first molar
Intercanine nasal width (CNW)	Distance between the convexities of the right and left borders of the piriform in the canine
Intermolar nasal width (MNW)	Distance between the convexities of the right and left borders of the piriform in first molar
Total area	Surface area of the nasal airway model
Total volume	Volume of the nasal airway model
Pressure	Maximum negative pressure occurring in the nasal airway
ΔPressure	Difference in value between maximum negative pressure and negative minimum pressure in the nasal airway
Velocity	Maximum velocity occurring in the nasal airway and nasopharynx
Resistance	( was nasal airway inlet volume flow rate)