Skip to main content
Progress in Orthodontics

Table 4 Independent samples T test for comparing the differences in the dental and skeletal changes after class II elastics phase for between the 2 groups

From: The efficiency of mandibular mini-implants in reducing adverse effects of class II elastics in adolescent female patients: a single blinded, randomized controlled trial

Variable Group    Differences 95% Confidence interval of the difference t P value  
Mean SD Mean SD Lower Upper
SNA C − 0.33 2.23 0.78 0.97 − 1.22 2.79 0.81 0.42642 P > 0.05 NS
I − 1.12 2.50
SNB C 0.17 2.79 0.96 1.06 − 1.24 3.16 0.90 0.37587 P > 0.05 NS
I − 0.79 2.39
ANB C − 0.50 1.57 − 0.13 0.51 − 1.18 0.92 − 0.26 0.79458 P > 0.05 NS
I − 0.37 0.79
MMP C 0.42 2.02 0.10 1.00 − 1.98 2.18 0.10 0.92150 P > 0.05 NS
I 0.32 2.83
MP/SN C 1.38 2.23 1.01 0.89 − 0.84 2.85 1.13 0.26928 P > 0.05 NS
I 0.37 2.13
Y axis angle C 2.30 4.67 0.15 1.40 − 2.76 3.06 0.11 0.91572 P > 0.05 NS
I 2.15 1.32 0.15
Lower facial height C 2.30 4.91 0.17 1.55 − 3.05 3.39 0.11 0.91545 P > 0.05 NS
I 2.13 2.20 0.17 1.55 − 3.14 3.47 0.11
Effective maxillary length C 0.75 5.28 0.05 1.75 − 3.58 3.68 0.03 0.97749 P > 0.05 NS
I 0.70 3.00
Effective mandibular length C 2.00 8.34 0.03 2.71 − 5.59 5.65 0.01 0.99030 P > 0.05 NS
I 1.97 4.31
SN/occlusal plane C 4.30 2.65 0.18 0.99 − 1.87 2.24 0.19 0.85482 P > 0.05 NS
I 4.12 2.18
U1 vertical position C 1.67 3.39 0.61 1.18 − 1.85 3.06 0.51 0.61232 P > 0.05 NS
I 1.06 2.31
U1 AP position C − 0.30 3.82 4.05 1.40 1.15 6.95 2.89 0.00842 P < 0.01 HS
I − 4.35 2.99
U1 inclination C − 3.33 1.61 5.23 1.92 1.26 9.21 2.73 0.01227 P < 0.05 S
I − 8.57 6.45
U6 AP position C − 2.04 5.91 1.25 2.51 − 3.96 6.46 0.50 0.62360 P > 0.05 NS
I − 3.29 6.38
U6 vertical position C 0.08 2.16 − 0.50 0.68 − 1.90 0.90 − 0.74 0.46804 P > 0.05 NS
I 0.58 0.91
L1 inclination C 5.42 2.81 0.97 0.92 − 0.93 2.86 1.06 0.30225 P > 0.05 NS
I 4.45 1.47 − 0.97 2.90 1.06
L1 AP position C 1.33 1.44 0.31 0.63 − 0.99 1.61 0.49 0.62748 P > 0.05 NS
I 1.03 1.63
L1 vertical position C 2.42 4.70 1.55 1.48 − 1.51 4.61 1.05 0.30515 P > 0.05 NS
I 0.87 2.02
L6 vertical C 1.21 0.99 0.02 0.37 − 0.76 0.79 0.04 0.96483 P > 0.05 NS
I 1.19 0.84
L6 AP position C 0.92 6.35 − 2.07 2.14 − 6.50 2.37 − 0.97 0.34422 P > 0.05 NS
I 2.98 3.82
  1. C conventional group, I mini-implant group
Back to article page