Table 4. .
Mean Cephalometric Changes From T1 to T2 Between Groupsa
| Variable |
Group 1 (N = 22), No Cinched Back |
Group 2 (N = 22), Cinched Back |
Difference |
P Value |
P Critical |
||
| Mean |
SD |
Mean |
SD |
||||
| U1 to X (°) | 2.17 | 2.82 | −1.99 | 2.39 | −4.17 | <.001* | .006 |
| U1cr to X (mm) | −2.09 | 1.44 | −2.23 | 0.94 | −0.14 | .896 | .050 |
| U1 tip to U6D (mm) | −0.58 | 1.89 | −1.42 | 1.51 | −0.84 | .257 | .010 |
| U6 to X (°) | 7.21 | 6.28 | 6.75 | 7.19 | −0.46 | .858 | .025 |
| U1 tip to X (mm) | −1.29 | 1.21 | −0.48 | 1.37 | 0.81 | .642 | .017 |
| U6 apex to X (mm) | 1.10 | 1.26 | 0.46 | 1.31 | −0.64 | .033 | .008 |
| U1 apex to X (mm) | −2.16 | 1.29 | −2.88 | 1.43 | −0.72 | .493 | .013 |
| U1 apex to Y (mm) | −3.50 | 1.90 | 1.09 | 1.65 | 4.59 | .060 | .009 |
| U1 tip to Y (mm) | 1.68 | 1.72 | −1.13 | 2.12 | −2.81 | .000* | .007 |
a
SD indicates standard deviation; T1, before treatment; T2, after intrusion of maxillary incisors; U1, maxillary central incisor; U1cr, centroid point of maxillary central incisor; U6, maxillary first molar; U6D, distal aspect of maxillary first molar.
*
P < .05.