Effect of different angulations and collar lengths of conical hybrid implant abutment on screw loosening after dynamic cyclic loading

International Journal of Implant Dentistry

Table 2 One-way ANOVA and post hoc Tukey test results for mean ± SD of the initial RTV, postload RTV, and difference between initial and postload RTV between all groups

	Initial RTV	Postload RTV		Difference between initial and postload RTV
	Mean ± SD
Subgroups
GIA	22.5 ± 0.5	23.1 ± 0.8		− 0.6 ± 0.4
GIB	22.4 ± 0.4	22.7 ± 0.4		− 0.2 ± 0.2
GIIA	22.4 ± 0.4	20.8 ± 0.5		1.6 ± 0.1
GIIB	22.2 ± 0.4	19.1 ± 0.9		3.0 ± 0.5
GIIIA	22.2 ± 0.3	18.7 ± 0.8		3.4 ± 0.5
GIIIB	22.2 ± 0.4	17.1 ± 1.6		5.0 ± 1.2
ANOVA
F	1.5	88.0		153.9
P value	0.1	< 0.001*		< 0.001*
After value	Tukey’s test
After value	GIA	GIB	GIIA	GIIB	GIIIA
GIB	0.8
GIIA	< 0.001*	< 0.001*
GIIB	< 0.001*	< 0.001*	< 0.001*
GIIIA	< 0.001*	< 0.001*	< 0.001*	0.9
GIIIB	< 0.001*	< 0.001*	< 0.001*	< 0.001*	< 0.001*