Table 2.

Weight comparison between nonsandblasted and sandblasted bone screws (Mann-Whitney tests).

Diameters	Group 2 (nonsandblasted)		Group 3 (sandblasted)		P
	Mean (g)	SD	Mean (g)	SD
1.3 mm	0.0519	0.000568	0.0508	0.000422	0.0014
1.4 mm	0.0567	0.000483	0.0551	0.000568	0.0003
1.5 mm	0.0607	0.000675	0.0599	0.000738	0.0211
1.6 mm	0.0664	0.000516	0.0653	0.000675	0.0040
1.7 mm	0.0746	0.000516	0.0733	0.000823	0.0031