Table 4. Anterior maxillary bone thickness.

Level		Mean (SD); range in mm	P value
Nasal spine
	Male	11.48 (2.14); 6.64–16.80	0.001*
	Female	10.00 (1.88); 6.35–14.09
	Average	10.75 (2.14); 6.35–16.80
Mid Incisive canal
	Male	6.73 (1.90); 2.72–10.60	0.002*
	Female	5.86 (1.55); 1.58–8.22
	Average	6.31 (1.78); 1.58–10.60
Lower labial alveolus
	Male	6.19 (2.06); 1.05–9.41	0.055
	Female	5.36 (1.99); 1.53–8.99
	Average	5.78 (2.06); 1.05–9.41
Overall average		7.63 (1.61); 3.92–12.18

* Independent t-test.