International Journal of Implant Dentistry

Table 5 Mean ± SD of percentage initial and percentage post load RTL₁ and percentage difference between initial and post load RTL₁ for GIIA and GIIB

From: Effect of dynamic cyclic loading on screw loosening of retightened versus new abutment screw in both narrow and standard implants (in-vitro study)

% RTL 1		Narrow diameter						T-test
% RTL 1		Retightening			New screw			t	P value
Initial	Range	23	−	30	20	−	25	2.003	0.080
Initial	Mean ± SD	26.134	±	2.755	22.868	±	2.387	2.003	0.080
Post load	Range	41.33	−	47.67	40.33	−	45	1.342	0.216
Post load	Mean ± SD	44.666	±	2.418	42.866	±	1.775	1.342	0.216
Paired test	P value	0.001*			< 0.001*
% Difference	Range	37.78	−	107.25	70.42	−	118.33	− 1.047	0.326
% Difference	Mean ± SD	73.160	±	26.821	89.060	±	20.825	− 1.047	0.326

*Statistical significant

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