Correlation between the Pharyngeal Airway Space and Head Posture after Surgery for Mandibular Prognathism

Table 2

Linear distances and degree for the serial cephalometric parameters.

Variable

T12

T23

T34

T14

T24

Mean

SD

Mean

SD

Mean

SD

Mean

SD

Mean

SD

Linear distance

NSP

—

—

—

UOP

—

—

—

LOP

—

—

LGP

—

—

—

Tongue depth

—

Tongue length

—

—

H-E

—

—

Degrees

C4-S-N

—

—

—

—

Significant ; —: not significant.
T12: postsurgical immediate change; T23: change between immediately and 6 weeks to 3 months after surgery; T34: change between 6 weeks to 3 months and over 1 year after surgical; T14: over 1-year final surgical change; T24: over 1 year surgical stability.
NSP: nasopharyngeal airway; UOP: upper oropharyngeal airway.
LOP: lower oropharyngeal airway; LGP: laryngopharyngeal airway.
H-E: distance between hyoid bone and epiglottis.
C4-S-N: craniocervical angle.