Variables

Cgroup (n = 18)

APgroup (n = 16)
 

Mean

SD

Mean

SD

p value


Threedimensional tooth movement

Maxillary central incisors

U1CP ΔX′

− 0.16

0.74

− 0.09

0.83

.9291

U1CP ΔY

4.02

1.07

3.81

1.44

.6515

U1CP ΔZ

0.20

0.62

1.99

0.69

.0000***

U1RPΔX′

0.02

0.78

0.11

0.46

.7123

U1RP ΔY

0.94

1.41

1.91

1.01

.0364*

U1RP ΔZ

0.96

0.93

1.76

0.57

.006**

Maxillary canines

U3CP ΔX′

0.11

0.70

0.34

1.06

.4759

U3CP ΔY

3.80

1.11

3.70

1.23

.7913

U3CP ΔZ

1.46

0.71

2.02

0.84

.0436**

U3RP ΔX′

0.17

0.62

0.45

0.85

.2801

U3RP ΔY

1.12

1.42

0.87

1.30

.5976

U3RP ΔZ

1.97

0.94

2.09

1.58

.7782

Maxillary first molars

U6CP ΔX′

− 0.78

0.93

− 0.09

1.10

.0663

U6CP ΔY

− 1.46

0.90

− 0.45

1.44

.0212*

U6CP ΔZ

− 0.65

0.55

0.99

1.05

.0000***

Occlusal plane and canine evaluation

ΔOPFH plane (°)

0.62

1.49

− 0.19

2.69

0.446

ΔFH to U3 long axis (°)

5.61

3.23

3.20

2.44

0.020*

ΔOP to U3 cusp tip (mm)

0.15

0.65

− 0.21

0.56

0.093

Alveolar bone level

ΔVABLl

0.071

0.22

− 0.32

0.42

0.003**

ΔVALBp

2.37

2.51

1.55

1.02

0.783

Root resorption

ΔRL

− 0.8

0.68

− 0.7

0.59

0.692

 Independent t test was performed
 SD standard deviation, ΔX′ change of Xaxis (outward movement: +, inward movement: −), ΔY change of Yaxis (distal movement: +, mesial movement: −), ΔZ change of Zaxis (upward movement: +, downward movement: −), ΔOPFH plane occlusal plane angle to FH plane, ΔFH to U3 long axis FH plane angle to the long axis of the maxillary canines, ΔOP to U3 cusp tip distance between the cusp tip of maxillary canines and occlusal plane, ΔVABLl change of vertical alveolar bone level on labial side, ΔVALBp change of vertical alveolar bone level on palatal side, ΔRL change of root length
 *p < 0.05; **p < 0.01; ***p < 0.001