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Table 3 Comparison between short and high collar length (A and B)

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

Collar length

Subgroups

T test

A (2 mm collar length)

B (4 mm collar length)

t

P value

Initial RTV

Mean ± SD

22.3 ± 0.4

22.3 ± 0.5

0.9

0.3

Postload RTV

Mean ± SD

20.9 ± 1.9

19.6 ± 2.5

2.5

0.014*

Difference between initial and postload RTV

Mean ± SD

1.4 ± 1.7

2.6 ± 2.3

 

Paired test

P value

< 0.001*

< 0.001*

  1. *statistical significant differences (P <.05)