Determining the Margin of Safety for Damaging the Sphenoid Sinus with Nasal Septum Osteotome during Le Fort I Surgery in Young Adults

Table 1

Study outcomes and descriptive statistics.

		Mean	Std.	Minimum	Maximum	p
Age	F	19	3.000	15	25	0.537
	M	18.61	3.252	15	25
Surgical line (mm)	F	50.64	4.465	35.65	63.57	0.057
	M	52.51	5.193	41.30	71.83
Undesired line (mm)	F	62.76	4.358	51.66	70.85	0.139
	M	64.25	5.401	52.22	77.15
Distinction^1 (mm)	F	12.46	4.218	6.98	24.59	0.807
	M	12.66	3.820	6.33	24.30
Tilt angle^2 (degree)	F	16.80	3.011	12.63	24.09	0.005
	M	18.50	2.702	13.91	27.34

Std.: standard deviation; : significant, p < 0.05.
¹Distinction was obtained by subtracting the length of surgical line from the length of undecided line in mm.
²Tilt angle is the angle between surgical and undesired lines.