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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

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

 

%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*

  1. negative means decreased post loading RTL ratio (removal torque gain)
  2. *statistical significant differences (P <.05)