International Journal of Implant Dentistry

Table 6 Mean ± SD of percentage initial and percentage post load RTL₂ and percentage difference between initial and post load RTL₂ 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 2		Narrow diameter						T-test
% RTL 2		Retightening			New screw			t	P value
Initial	Range	41.33	−	47.67	21	−	23.67	18.601	< 0.001*
Initial	Mean ± SD	44.666	±	2.418	22.600	±	1.091	18.601	< 0.001*
Post load	Range	43.33	−	50	53.67	−	61	− 5.491	0.001*
Post load	Mean ± SD	47.598	±	2.734	57.734	±	3.092	− 5.491	0.001*
Paired test	P value	0.036*			< 0.001*
% Difference	Range	3.65	−	15.38	143.94	−	165.08	− 32.431	< 0.001*
% Difference	Mean ± SD	6.636	±	4.913	155.532	±	9.014	− 32.431	< 0.001*

*Statistical significant

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