pISSN 2234-7518
eISSN 2005-372X

Detailed description of the sample

Variable Without extraction With extraction p-value Global
Model variable
Overjet (mm) 3.17 ± 1.42 3.91 ± 2.25 0.004* 3.448 ± 1.804
Overbite (mm) 3.55 ± 1.83 3.08 ± 1.82 0.069 3.376 ± 1.836
Maxillary arch discrepancy (mm) 0.24 ± 2.86 −2.30 ± 4.03 0.000* −0.722 ± 3.565
Mandibular arch discrepancy (mm) −0.09 ± 2.50 −2.17 ± 2.75 0.000* −0.882 ± 2.786
Anterior bolton discrepancy (mm) −0.58 ± 1.14 −0.36 ± 1.23 0.185 −0.498 ± 1.170
Molar class, modified 0.22 ± 0.35 0.51 ± 0.39 0.000* 0.329 ± 0.390
Canine class, modified 0.36 ± 0.32 0.52 ± 0.37 0.001* 0.418 ± 0.347
Sagittal cephalometric variable
ANB (°) 2.62 ± 1.89 3.52 ± 2.39 0.003* 2.962 ± 2.134
SNA (°) 80.87 ± 3.67 80.12 ± 3.64 0.147 80.585 ± 3.671
SNB (°) 78.25 ± 3.41 76.60 ± 3.33 0.000* 77.624 ± 3.466
Rickett’s facial convexity (mm) 1.79 ± 2.55 3.09 ± 3.06 0.001* 2.278 ± 2.818
Rickett’s maxillary depth (°) 89.05 ± 2.72 87.54 ± 2.44 0.000* 90.562 ± 3.083
Rickett’s facial depth (°) 90.71 ± 2.93 90.32 ± 3.32 0.370 88.479 ± 2.710
Articular angle (S-Ar-Go) (°) 146.08 ± 6.71 145.32 ± 6.43 0.415 145.791 ± 6.603
Upper gonial angle (Ar-Go-N) (°) 50.07 ± 4.29 50.03 ± 3.78 0.945 50.057 ± 4.092
Wits analysis (mm) −0.74 ± 2.78 0.89 ± 3.29 0.000* −0.125 ± 3.079
Maxillomandibular difference (mm) 32.95 ± 4.83 31.49 ± 4.59 0.030* 32.393 ± 4.748
Cephalometric overjet (mm) 4.23 ± 1.61 4.67 ± 2.22 0.095 4.395 ± 1.873
Molar relationship (mm) −0.48 ± 1.40 0.61 ± 1.86 0.000* −0.067 ± 1.668
Vertical cephalometric variable
Face height ratio (N-ANS/ANS-Me) (%) 82.41 ± 7.04 81.02 ± 6.55 0.152 81.884 ± 6.877
Gonial angle (Ar-Go-Me) (°) 121.75 ± 6.53 123.18 ± 5.16 0.095 122.29 ± 6.077
Lower gonial angle (N-Go-Me) (°) 71.66 ± 4.77 73.16 ± 4.39 0.023* 72.228 ± 4.674
Jarabak Index (%) 65.87 ± 4.85 64.93 ± 4.33 0.154 65.511 ± 4.669
SN-GoGn (°) 28.87 ± 5.86 30.73 ± 5.58 0.023* 29.572 ± 5.814
PP-MP (°) 24.61 ± 5.38 25.99 ± 4.72 0.058 25.132 ± 5.171
FMA (°) 22.51 ± 5.10 24.00 ± 4.50 0.032* 23.073 ± 4.925
Rickett’s facial axis (°) 89.17 ± 4.28 87.42 ± 3.59 0.002* 88.509 ± 4.115
Cephalometric overbite (mm) 4.71 ± 4.81 3.55 ± 4.66 0.085 4.267 ± 4.774
Dental cephalometric variable
U1-APo (mm) 6.18 ± 2.36 7.53 ± 2.83 0.000* 6.693 ± 2.623
U1-PP (°) 109.97 ± 6.14 110.62 ± 7.08 0.479 110.214 ± 6.503
L1-APo (mm) 2.18 ± 2.24 2.94 ± 2.37 0.019* 2.466 ± 2.316
IMPA (°) 93.67 ± 6.17 96.57 ± 7.44 0.002* 94.766 ± 6.812
Interincisal angle (°) 131.76 ± 9.82 126.82 ± 11.46 0.001* 129.891 ± 10.716
Soft tissue cephalometric variable
Labial gap (mm) 2.25 ± 2.12 2.54 ± 2.63 0.377 2.357 ± 2.322
Upper lip to SnPg’ (mm) 4.06 ± 2.09 4.69 ± 2.12 0.035* 4.297 ± 2.118
Lower lip to SnPg’ (mm) 3.28 ± 2.32 3.58 ± 2.35 0.362 3.393 ± 2.330
Upper lip to subnasal vertical (mm) 1.94 ± 2.25 2.04 ± 2.68 0.769 1.979 ± 2.416
Lower lip to subnasal vertical (mm) −2.6 ± 3.34 −3.77 ± 5.36 0.050* −2.882 ± 3.547
Upper incisor exposure (mm) 4.03 ± 1.99 4.17 ± 2.06 0.623 4.081 ± 2.013

Values are presented as mean ± standard deviation.

*Significance at a 0.05 level.

See Table 1 for definition of each clinical and cephalometric variable.

Korean J Orthod 2022;52:102~111 https://doi.org/10.4041/kjod.2022.52.2.102
© Korean J Orthod
© The Korean Association of Orthodontists. / Powered by INFOrang Co., Ltd