International Journal of Implant Dentistry

Table 4 Mean ± SD of percentage initial and percentage post load RTL₂ and percentage difference between initial and post load RTL₂ for GIA and GIB

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		Standard diameter						T-test
% RTL 2		Retightening			New screw			t	P value
Initial	Range	42.67	−	46.67	17.67	−	25	15.534	< 0.001*
Initial	Mean ± SD	44.402	±	1.623	22.200	±	2.753	15.534	< 0.001*
Post load	Range	46.67	−	53.33	51.33	−	57.33	− 2.848	0.022*
Post load	Mean ± SD	49.866	±	2.408	54.066	±	2.253	− 2.848	0.022*
Paired test	P value	< 0.001*			< 0.001*
% Difference	Range	9.37	−	14.29	127.14	−	190.57	− 11.283	< 0.001*
% Difference	Mean ± SD	12.280	±	1.975	146.074	±	26.441	− 11.283	< 0.001*

*Statistical significant

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