Torque Loss After Miniscrew Placement: An In-Vitro Study Followed by a Clinical Trial

Table 4: Differences between types of implants. Torque values are expressed in Ncm.

Model and type of implant		At baseline (T1)	p value	Over time (T2-T1 %)	p value	Over time (T3-T2 %)	p value	Over time (T3-T1 %)	p value
In vivo (29 samples)	Group 1	19.27 ± 3.28	<0.001*	41.86% ± 12.48	0.705	34.58% ± 50.46	0.885	24.36% ± 24.03	0.798
In vivo (29 samples)	Group 2	10.71 ± 4.75	<0.001*	39.74% ± 17.22	0.705	31.36% ± 62.03	0.885	21.61% ± 30.12	0.798
In vitro (20 samples)	Group 1	17.00 (25.75 - 12.00)	0.011*	22.24% ±11.78	<0.001*
In vitro (20 samples)	Group 2	10.50 (14.00 - 8.50)	0.011*	49.71%±13.28	<0.001*

* statistically significant (p < 0.05)