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. 2021 Jan 7;22:2. doi: 10.1186/s40510-020-00347-z

Table 2.

Insertion and removal torque of orthodontic miniscrews in the study groups

Insertion torque (Ncm)
Range (mean ± SD)
p value Sig. Removal torque (Ncm)
Range (mean ± SD)
p value Sig.
SAE (n = 31) 5–30 (12.10 ± 6.295) 0.83 NS 10–30 (15.71 ± 5.563) 0.001 *
Control (n = 31) 5–25 (12.42 ± 5.755) 5–10 (8.08 ± 2.481)

SAE indicates sandblasted and acid-etched miniscrews

SD standard deviation, Sig. significance, NS not significant

*p < .05