International Journal of Implant Dentistry

Table 7 One way ANOVA test comparing between all subgroups regarding percentage initial, percentage post load, and percentage difference between initial and post load (RTL₁) and percentage initial, percentage post load, and percentage difference between initial and post load (RTL₂)

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

		Subgroups												ANOVA
		GIA			GIB			GIIA			GIIB			F	P value
Initial; RTL 1%	Range	31.35	−	33.4	31.33	−	33.33	23	−	30	20	−	25	31.153	< 0.001*
Initial; RTL 1%	Mean ± SD	32.518	±	0.872	32.464	±	0.869	26.134	±	2.755	22.868	±	2.387	31.153	< 0.001*
Post load; RTL 1%	Range	36.7	−	42.5	36.67	−	42	41.33	−	47.67	40.33	−	45	7.097	0.003*
Post load; RTL 1%	Mean ± SD	39.362	±	2.462	39.202	±	2.316	44.666	±	2.418	42.866	±	1.775	7.097	0.003*
Paired test	P value	0.007*			0.006*			0.001*			< 0.001*
% Difference	Range	10.01	−	35.57	10.02	−	34.06	37.78	−-	107.25	70.42	−	118.33	18.784	< 0.001*
% Difference	Mean ± SD	21.192	±	9.569	20.886	±	8.998	73.160	±	26.821	89.060	±	20.825	18.784	< 0.001*
Initial; RTL 2%	Range	42.67	−	46.67	17.67	−	25	41.33	−	47.67	21	−	23.67	189.380	< 0.001*
Initial; RTL 2%	Mean ± SD	44.402	±	1.623	22.200	±	2.753	44.666	±	2.418	22.600	±	1.091	189.380	< 0.001*
Post load; RTL 2%	Range	46.67	−	53.33	51.33	−	57.33	43.33	−	50	53.67	−	61	14.492	< 0.001*
Post load; RTL 2%	Mean ± SD	49.866	±	2.408	54.066	±	2.253	47.598	±	2.734	57.734	±	3.092	14.492	< 0.001*
Paired test	P value	< 0.001*			< 0.001*			0.036*			< 0.001*
% Difference	Range	9.37	−	14.29	127.14	−	190.57	3.65	−	15.38	143.94	−	165.08	165.250	< 0.001*
% Difference	Mean ± SD	12.280	±	1.975	146.074	±	26.441	6.636	±	4.913	155.532	±	9.014	165.250	< 0.001*

*Statistical significant

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