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. 2019 Mar 13;41(5):537–543. doi: 10.1093/ejo/cjz005

Table 2.

Interphase changes in the bone-anchored maxillary protraction group (paired t-tests). SD, standard deviation

Pre-treatment Post-treatment
Variables Mean SD Mean SD Diff. SD P
Sagittal skeletal
 SNA 73.68 3.35 75.36 3.30 1.68 1.64 <0.001*
 SNB 77.57 4.30 77.54 4.70 –0.03 1.79 0.938
 ANB –3.88 2.83 –2.19 3.62 1.69 2.60 0.014
 WITS –7.53 3.06 –5.04 4.64 2.49 3.22 0.004*
 Co-A 80.41 4.35 83.77 4.77 3.37 2.21 <0.001*
 Co–Gn 116.52 5.18 118.44 5.46 1.92 3.08 0.017
 Co–Go 57.29 3.60 58.31 3.81 1.01 3.36 0.219
 NA-Apo –9.54 6.24 –6.26 7.68 3.29 5.69 0.025
Vertical skeletal
 Occ Plane to FH 7.56 3.56 5.53 4.26 –2.02 3.12 0.014
 FMA (MP–FH) 29.71 4.67 28.23 4.13 –1.48 2.81 0.040
 Ar–Go–Gn 130.73 4.62 128.66 5.25 –2.08 2.26 0.001*
 N–Me 121.75 6.59 124.31 7.46 2.56 3.77 0.010
Teeth
 U1–palatal plane 108.38 7.40 109.43 8.89 1.05 3.72 0.248
 IMPA 81.40 6.03 82.79 7.51 1.39 3.95 0.154
 Overbite 1.76 3.50 0.22 1.78 –1.54 3.77 0.102
 Overjet –4.98 2.73 –2.63 4.19 2.35 3.07 0.005*
 Molar relation –3.88 2.10 –0.53 2.77 3.34 2.12 <0.001*
Soft tissue
 Nasolabial angle 102.46 14.42 96.36 11.81 –6.09 12.58 0.056
 G’–Sn–Po’ 1.40 6.52 3.81 6.89 2.41 4.25 0.028
 G’–Sn’ –2.14 3.65 –0.47 3.23 1.68 2.00 0.002*
 G’–Pg’ –5.02 9.63 –4.52 9.45 0.49 4.16 0.621

*Statistically significant after Holm–Bonferroni correction for multiple comparisons.