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Table 3 Mean prescription and mean imprecision values

From: Predictability of orthodontic movement with orthodontic aligners: a retrospective study

 

N

Mean prescription(°)

SD

Mean imprecision(°)

SD

Median

IQR

Significance.

Upper arch

 VL tip

Incisors

57

9.2

6.7

4.5

4.0

3.4

−  0.6

NS

Canines

29

5.1

3.2

2.5

1.5

2.3

0.8

NS

Premolars

53

5.1

3.4

3.1

2.6

2.1

− 0.5

NS

Molars

37

3.9

1.4

2.9

2.2

2.5

0.3

NS

 MD tip

Incisors

57

6.4

4.5

3.2

2.6

2.5

− 0.1

NS

Canines

29

4.7

2.8

2.8

2.2

2.6

0.4

NS

Premolars

53

4.6

3.3

3.6

2.3

3.9

1.6

NS

Molars

37

4.5

1.6

3.4

2.3

3.4

1.1

NS

 Rot.

Incisors

57

10.8

9.3

5.0

5.3

3.7

− 1.6

NS

Canines

29

6.5

4.6

4.3

2.8

3.6

0.8

NS

Premolars

53

7.0

6.7

3.5

3.1

2.9

− 0.2

NS

Molars

37

7.2

4.8

4.8

4.6

4.4

− 0.2

NS

Lower arch

 VL tip

Incisors

64

5.9

2.1

2.9

2.6

2.3

− 0.3

NS

Canines

30

7.2

5.0

3.5

2.8

3.1

0.3

NS

Premolars

52

6.2

4.1

3.2

2.2

2.9

0.7

NS

Molars

23

3.9

1.7

1.3

.9

1.9

1.0

NS

 MD tip

Incisors

64

4.2

1.5

2.7

1.9

2.2

0.3

NS

Canines

30

4.8

2.0

3.3

2.2

2.9

0.6

NS

Premolars

52

5.4

4.7

3.4

2.6

3.1

0.5

NS

Molars

23

6.3

3.7

4.3

3.0

3.5

0.5

NS

 Rot.

Incisors

64

7.2

4.4

3.4

2.5

2.8

0.3

*

Canines

30

12.4

10.0

6.9

5.4

5.5

0.1

*

Premolars

52

7.3

6.0

5.4

5.8

3.7

− 2.1

NS

Molars

23

4.6

2.8

2.0

1.8

1.4

− 0.4

*

  1. VL tip vestibulolingual tip, MD tip mesiodistal tip, Rot. rotation, SD standard deviation, IQR interquartile range, NS not significant
  2. *p < 0.05