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 1 One-way ANOVA and post hoc Tukey test results for mean ± SD of the %initial RTL, %postload RTL, and %difference between initial and postload RTL between all groups

	%initial RTL	%postload RTL		%difference between initial and postload RTL
	Mean ± SD
Subgroups
GIA	24.9% ± 1.7	22.8% ± 2.9		− 2.7% ± 2.0
GIB	25.1% ± 1.5	24.1% ± 1.3		− 1.3% ± 1.0
GIIA	25.1% ± 1.3	30.6% ± 1.6		7.3% ± 0.7
GIIB	25.9% ± 1.5	36.2% ± 3.1		13.9% ± 2.5
GIIIA	25.9% ± 1.0	37.4% ± 2.9		15.6% ± 2.8
GIIIB	25.9% ± 1.5	42.8% ± 5.6		22.9% ± 6.2
ANOVA
F	1.5	88.0		153.9
P value	0.1	< 0.001*		< 0.001*
After value	Tukey’s test
	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*