Table 3 Intra-group comparison of palatal alveolar bone thickness (PABT) measurements before expansion (T0) and after 7-week Alt-RAMEC (T1) with the paired t test (p < 0.05)

1.96 ± 0.27

2.29 ± 0.24

0.32 ± 0.15(0.000*)

1.97 ± 0.27

2.30 ± 0.24

0.32 ± 0.14(0.000*)

1.99 ± 0.25

2.05 ± 0.21

0.06 ± 0.20(0.308)

1.99 ± 0.25

2.05 ± 0.21

0.06 ± 0.20(0.308)

2.57 ± 0.23

2.57 ± 0.22

0.00 ± 0.05(0.943)

2.61 ± 0.24

2.61 ± 0.24

0.00 ± 0.04(0.988)

2.61 ± 0.24

2.60 ± 0.20

0.00 ± 0.08(0.889)

2.61 ± 0.24

2.62 ± 0.24

0.01 ± 0.08(0.923)

2.53 ± 0.25

2.91 ± 0.29

0.41 ± 0.28(0.000*)

2.58 ± 0.26

2.92 ± 0.29

0.34 ± 0.29(0.000*)

2.60 ± 0.28

2.93 ± 0.30

0.33 ± 0.30(0.001*)

2.63 ± 0.29

2.94 ± 0.32

0.31 ± 0.30 (0.001*)