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Table 1 Demographics and clinical characteristics of sample

From: Stability of treatment with self-ligating brackets and conventional brackets in adolescents: a long-term follow-up retrospective study

Variable

SL group

CL group

P value

Mean

SD

Mean

SD

Age

13.56

1.62

13.48

1.46

0.53

gender

     

male

15

 

14

  

female

15

 

16

 

0.34

Follow up period

7.24

1.32

7.68

1.6

0.46

Arch length Md

50.36

5.21

50.12

4.98

0.59

Arch length Max

59.32

4.68

59.12

4.96

0.35

Inter-canine width Md

27.36

1.40

28.12

1.34

0.36

Inter-canine width Max

34.23

1.68

34.26

1.59

0.33

Inter-molar width Md

36.26

2.13

36.59

2.36

0.48

Inter-molar width Max

42.32

2.36

41.89

2.29

0.67

II Md

11.26

4.56

11.89

5.36

0.24

II Max

10.38

3.89

9.87

4.12

0.18

PAR

28.48

10.23

27.68

10.98

0.34

  1. Max indicates maxillary; Md indicates mandibular; II indicates Irregularity Index; P > 0.05 indicates no statistically significant change.