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Progress in Orthodontics

Table 14 Torque expression, 0.018 brackets

From: Torque expression capacity of 0.018 and 0.022 bracket slots by changing archwire material and cross section

 

Bracket

5 Nmm angle (°)

SD

20 Nmm angle (°)

SD

Maximum moment (Nmm)

SD

Clinically significant torque (°)

SS .016×.016

STB

23.66

1.91

-

-

19.13

0.29

-

2D

23.59

1.17

42.63

0.96

-

-

19.04

SS .017×.017

STB

10.72

0.21

16.44

0.17

-

-

5.72

2D

9.51

0.31

17.25

0.16

-

-

7.74

SS .018×.018

STB

7.24

0.14

11.70

0.10

-

-

4.46

2D

4.45

0.11

10.49

0.10

-

-

6.04

SS .016×.022

STB

15.76

0.36

20.25

0.44

-

-

4.49

2D

13.88

0.47

20.81

0.29

-

-

6.92

SS .017×.022

STB

8.54

0.13

12.24

0.08

-

-

3.70

2D

7.47

0.09

11.52

0.00

-

-

4.05

SS .017×.025

STB

7.42

0.03

10.13

0.00

-

-

2.71

2D

6.42

0.08

11.34

0.06

-

-

4.92

SS .018×.022

STB

5.71

0.06

8.51

0.00

-

-

2.80

2D

3.44

0.40

8.02

0.48

-

-

4.58

SS .018×.025

STB

5.04

0.24

7.90

0.00

-

-

2.86

2D

3.95

0.05

7.75

0.06

-

-

3.80

ST SS .016×.022

STB

12.99

0.18

17.99

0.05

-

-

5.00

2D

12.68

0.43

17.80

0.16

-

-

5.12

ST SS .018×.022

STB

12.70

0.13

17.64

0.03

-

-

4.95

2D

6.10

0.09

9.76

0.03

-

-

3.66

TMA .0175×.0175

STB

12.94

1.09

26.34

0.66

-

-

13.40

2D

10.76

0.71

-

-

17.57

1.59

 

CuNiTi .016×.016

STB

-

-

-

-

2.58

0.06

-

2D

-

-

-

-

3.75

0.06

-

CuNiTi .017×.017

STB

-

-

-

-

3.17

0.06

-

2D

-

-

-

-

4.12

0.19

-

CuNiTi .018×.018

STB

-

-

-

-

4.69

0.06

-

2D

9.58

0.10

18.33

0.08

-

-

8.75

Nitinol .017×.025

STB

12.48

0.16

-

-

15.52

0.50

-

2D

12.66

0.10

-

-

16.75

0.23

-

NiTi .018×.025

STB

29.63

0.38

-

-

6.52

0.00

-

2D

12.27

0.23

-

-

10.14

0.11

-

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