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Table 5 Mean ± SD of percentage initial and percentage post load RTL1 and percentage difference between initial and post load RTL1 for GIIA and GIIB

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

% RTL 1 Narrow diameter T-test
Retightening New screw t P value
Initial Range 23 30 20 25 2.003 0.080
Mean ± SD 26.134 ± 2.755 22.868 ± 2.387
Post load Range 41.33 47.67 40.33 45 1.342 0.216
Mean ± SD 44.666 ± 2.418 42.866 ± 1.775
Paired test P value 0.001* < 0.001*  
% Difference Range 37.78 107.25 70.42 118.33 − 1.047 0.326
Mean ± SD 73.160 ± 26.821 89.060 ± 20.825
  1. *Statistical significant