Comparison between an Acrylic Splint Herbst and an Acrylic Splint Miniscrew-Herbst for Mandibular Incisors Proclination Control

Table 2

𝑡-test for unpaired data and Wicoxson rank sum test. Values at T1 and T2 and differences between groups.

Variable	Standard group (𝑛=14)		Miniscrew group (𝑛=14)		Difference between groups
	T1 [mean (SD)]	T2 [mean (SD)]	T1 [mean (SD)]	T2 [mean (SD)]	T1 [mean (95% CI)]	𝑃	T2 [mean (95% CI)]	𝑃
A/Olp, mm	76.5 (1.0)	75.8 (1.0)	79.5 (1.0)	79.3 (1.1)	0.96 (0.93 to 1.0)	0.0401	0.96 (0.92 to 1.0)	0.0335
Pg/Olp, mm	76.6 (3.3)	78.1 (1.5)	82.4 (5.1)	85.8 (5.7)	−5.8  (−9.2 to −2.4)	0.002	−7.6 (−12.0 to −3.2)	0.0014
Is/Olp, mm	83.2 (1.0)	82.4 (1.1)	85.9 (1.1)	86.9 (1.1)	0.97 (0.9 to 1.0)	0.1004	0.95 (0.91 to 0.99)	0.0146
Ii/Olp, mm	77.0 (1.0)	79.3 (1.1)	80.3 (1.1)	83.7 (1.1)	0.96 (0.92 to 1.00)	0.037	0.95 (0.91 to 0.99)	0.0164
Ms/Olp, mm	51.1 (2.6)	49.9 (4.0)	54.6 (4.6)	53.8 (4.8)	−3.5  (−6.4 to −0.6)	0.021	−3.85 (−7.3 to 0.4)	0.0299
Mi/Olp, mm	51.1 (2.6)	53.3 (3.7)	53.6 (5.3)	57.7 (6.4)	−2.4 (−5.7 to 0.9)	0.1378	−4.4 (−8.5 to −0.3)	0.0361
A/Olp − Pg/Olp, mm	−0.1 (3.7)	−2.3 (3.8)	−2.7 (3.0)	−6.4 (3.2)	0.7 (−1.9 to 3.3)	0.5808	4.1 (1.3 to 6.8)	0.005
Is/Olp − Ii/Olp, mm	6.2 (2.2)	3.1 (1.5)	5.6 (1.9)	3.1 (0.9)	0.6 (−1.1 to 2.2)	0.4759	−0.1 (−1.0 to 0.9)	0.881
Ms/Olp − Mi/Olp, mm	2 (2)	−3.4 (1.7)	1.1 (1.7)	−3.9 (3.4)	0.9 (−0.5 to 2.4)	0.2004	0.6 (−1.5 to +2.7)	0.5789
Ar/Olp, mm	8.3 (4.2)	8.9 (3.3)	8.4 (3.2)	9.6 (4.2)	−0.1 (−3.0 to 2.8)	0.92	−0.6 (−3.6 to 2.3)	0.6579
Ar/Olp + Pg/Olp, mm	86.9 (4.5)	87.8 (5.5)	90.8 (4.8)	95.4 (5.9)	−3.9 (−7.5 to −0.25)	0.0372	−7.6 (−12.0 to −3.2)	0.0015
Ii/GoMe, degrees	95.4 (4.1)	102.9 (8.0)	100.5 (6.0)	101.1 (7.1)	−5.1 (−9.1 to −1.1)	0.0149	1.9 (−4.0 to 7.6)	0.5228
AN/NPg, degrees	5 (2)∗	3 (1)∗	4 (3)∗	2.5 (3)	1 (6)∗	0.8162∗∗	0.5 (4)∗	0.3979∗∗
SN/GoMe, degrees	31.6 (6.0)	31.9 (7.2)	33.5 (5.1)	32.6 (5.2)	−1.9 (−6.2 to 2.5)	0.3864	−0.8 (−5.7 to 4.1)	0.7435

∗Median and interquatile range for not normally distributed data.
∗∗Wilcoxon rank sum test.