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Table 6 Correlation coefficients of removal torque, age, and length and diameter of microimplants

From: Long-term evaluation of factors affecting removal torque of microimplants

 

Age

Length of microimplant

Diameter of microimplant

Self-drilling (n = 463)

 Removal torque

(mean ± SD: 3.37 ± 2.00 N cm)

0.024

0.221**

0.007

Pre-drilling (n = 220)

 Removal torque

(mean ± SD: 4.81 ± 2.82 N cm)

0.004

0.012

0.230*

  1. *p < 0.01, **p < 0.001