Table 1 Demographic distribution of subjects and baseline data for the groups

 Female

18 (72%)

19 (76%)

1.000^a

 Male

7 (28%)

6 (24%)

 Class I

18 (72%)

12 (48%)

0.149^a

 Class II

7 (28%)

13 (52%)

Age (years)

14.76 ± 1.77

14.75 ± 1.52

0.977^c

ANB°

4.00 (2.95–4.65)

4.20 (2.65–6.45)

0.443^b

Little T0 (mm)

9.95 ± 2.62

9.96 ± 2.77

0.986^c

3-3 T0 (mm)

33.79 (31.40–34.66)

34.29 (32.85–36.04)

0.068^b

6-6 T0 (mm)

49.48 ± 4.08

50.33 ± 2.97

0.401^c

U1-SN° T0

102.70 (98.40–109.20)

105.90 (100.50–108.05)

0.415^b

U1-FH° T0

111.48 ± 6.77

112.23 ± 5.94

0.678^c

U1-NA° T0

18.40 (15.20–28.70)

21.70 (18.05–24.65)

0.946^b

U1-NA T0 (mm)

4.20 (2.35–6.85)

4.30 (2.30–5.20)

0.655^b