Table 4 Cephalometric parameters according to positional dependency.

From: Comparison of polysomnographic and cephalometric parameters based on positional and rapid eye movement sleep dependency in obstructive sleep apnea

Variable

Positional (n = 111)

Non-positional (n = 22)

P value

SNA

79.0 ± 4.9

80.2 ± 5.7

0.322

ANB

0.4 ± 3.2

− 0.6 ± 3.5

0.187

AH⊥MP

20.5 ± 10.6

22.6 ± 6.1

0.367

AH-C3

42.9 ± 6.8

44.0 ± 5.0

0.479

SPT

12.2 ± 4.6

12.6 ± 2.3

0.748

PNS-U

40.7 ± 5.8

41.3 ± 4.6

0.635

NL/PNS-U

83.0 ± 34.2

84.4 ± 27.6

0.859

NAS

25.7 ± 3.6

24.7 ± 3.8

0.245

SOAS

11.8 ± 3.6

11.2 ± 3.2

0.485

MOAS

9.1 ± 3.5

8.9 ± 3.4

0.815

IOAS

11.1 ± 3.7

10.4 ± 3.8

0.389

HAS

18.2 ± 5.7

17.2 ± 4.8

0.421

  1. SNA, smaller angle which is formed by sella (S), nasion (N), and A point; ANB, smaller angle which is formed by A point, nasion (N), and B point; AH⊥MP, the perpendicular distance between AH and Go-Me line; AH-C3, the distance between AH and the third vertebra; SPT, maximum width of soft palate which is perpendicular to PNS-U line; PNS-U, the distance between PNS and U; NL/PNS-U, smaller angle between ANS-Pm line and PNS-U line; NAS, nasal airway space; SOAS, superior oral airway space; MOAS, middle oral airway space; IOAS, inferior oral airway space; HAS, hyoid airway space.
  2. Results were obtained from independent T test: mean ± SD.
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