Accuracy of Linear Measurements of Galileos Cone Beam Computed Tomography in Normal and Different Head Positions

Table 5

Comparison of mean differences with 0.5-mm absolute error: One-sample t-test.

Position	Absolute value of difference ± SD (mm)	P value
Normal	0.05±0.45	<0.001
Rotation	0.14±0.52	<0.001
Tilt	0.35±0.41	<0.001
Flexion	0.32±0.32	0.002
Extension	0.37±0.50	<0.001