OSAS	Obstructive Sleep Apnea
CBCT	Cone beam computed tomography
FA	Functional appliance
MCA	Minimal cross-sectional area
Phw1-psp	Upper airway dimension
Phw2-tb	Lower airway dimension
MPW	Pharyngeal width
PNS-AD1	Upper airway dimension
PNS-AD2	Lower airway dimension
AD2-H	Adenoid thickness in upper airway
AD1-Ba	Adenoid thickness in lower airway
DOP	U-MPW
DPH	Lower pharyngeal space
PAS	Posterior airway space
AHI	Apnea–Hypopnea index
SPAS	Superior posterior airway space
MAS	Middle airway space
SPL	Soft palate length
SNA	Angle between the sella, nasion and A point
SNB	Angle between the sella, nasion and B point
ANB	Angle between point A, the nasion and point B
FMA	Frankfurt mandibular plane angle
OJ	Overjet
SDB	Sleep disordered breathing
CPAP	Continuous positive airway pressure
PSG	Polysomnography