Table 4 Mean and standard deviation (SD) of RME-E and RME-6 intra-group and inter-group comparison between T1 and T2; (–) represents distal angulation and lingual inclination; (+) represents distal rotation

0.01

2.78

0.526

− 0.61

1.86

0.111

0.62

0.594

0.76

3.03

0.145

− 0.05

2.10

0.798

0.81

0.182

− 2.67

5.93

0.073

2.39

2.86

0.017*

− 5.06

0.003*

− 3.49

5.26

0.001*

0.57

3.94

0.334

− 4.06

0.006*

8.61

6.65

0.000*

2.45

6.18

0.191

6.16

0.006*

8.12

8.26

0.001*

0.32

4.98

0.755

7.80

0.002*

3.24

1.20

0.000*

2.81

1.80

0.001*

0.43

0.317

2.07

1.22

0.000*

1.79

1.07

0.001*

0.28

0.594