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. 2018 Mar 22;88(4):425–434. doi: 10.2319/090317-589.1

Table 2.

Comparison of the Differences in Amount of Tooth Movement at Monthly Intervals to T0 Between Groups

Groups
 Tooth
 Direction
 Time Interval; Mean (SD) (mm)
T1-T0
 T2-T0
 T3-T0
 T4-T0
 TF-T0
Control group Central incisors A-P 0.85 (0.74) 0.91 (1.08) 0.78 (1.34) 0.34 (1.18) 0.75 (1.42)
V 0.3 (0.42) 0.44 (0.37) 0.55 (0.5) 0.74 (0.48) 0.57 (0.52)
Lateral incisors A-P 1.38 (0.84) 2.05 (1.08) 2.51 (1.22) 2.72 (1.1) 2.65 (1.03)
V −0.16 (0.47) 0 (5.4) 0.31 (0.59) 0.81 (0.94) 0.68 (0.67)
Canines A-P 0.39 (0.22) 1.21 (0.8) 2 (0.78) 2.14 (0.55) 2.16 (0.8)
V 0.54 (0.54) 0.98 (0.58) 1.32 (0.82) 1.42 (0.93) 1.55 (0.73)
Experimental group Central incisors A-P 0.11 (0.11) −0.27 (0.19) −0.67 (0.35) −0.81 (0.5) −0.96 (0.41)
V 0.21 (0.26) 0.37 (0.37) 0.46 (0.31) 0.49 (0.39) 0.56 (0.38)
Lateral incisors A-P 0.33 (0.15) 0.74 (0.26) 0.99 (0.4) 1.29 (0.5) 1.22 (0.51)
V 0.11 (0.1) 0.14 (0.11) 0.3 (0.23) 0.42 (0.33) 0.41 (0.31)
Canines A-P 1.01 (0.34) 1.58 (0.5) 2.3 (0.73) 2.78 (0.86) 2.76 (0.81)
V 0.52 (0.28) 0.86 (0.5) 1.24 (0.67) 1.48 (0.76) 1.52 (0.74)
Between groups Central incisors A-P 0.74 (1.87) 1.18 (0.27) 1.45 (0.35) 1.15 (0.32) 1.71 (0.37)
 P value < .001* .001* < .001* < .001* < .001*
V 0.09 (0.12) 0.07 (0.13) 0.09 (0.15) 0.15 (0.21) 0.01 (0.16)
  P value .539 .59 .266 .412 .534
Lateral incisors A-P 1.05 (0.21) 1.31 (0.27) 1.52 (0.32) 1.43 (0.34) 1.42 (0.29)
  P value < .001* < .001* .001* .003* < .001*
V −0.27 (0.12) −0.14 (0.14) 0 (0.16) 0.39 (0.37) 0.27 (0.18)
  P value .149 .616 .385 .279 .109
Canines A-P 0.62 (0.1) 0.37 (0.1) 0.29 (0.27) 0.63 (0.31) 0.6 (0.28)
  P value < .001* .008* .175 .117 .049*
V 0.02 (0.15) 0.12 (0.19) 0.08 (0.26) 0.06 (0.41) 0.03 (0.26)
  P value .752 .402 .474 .765 .821
*

Significant at P < .05.

SD indicates standard deviation; TF, the final visit when achieved alignment;

Antero-posterior movement; + = labial movement of incisors, distal movement of canines, - = palatal movement of incisors, mesial movement of canines.

Vertical movement; + = extrusion, - = intrusion.