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Table 2 Maxillary transverse dimensions (mm) before treatment (T0), immediately after treatment (T1), 1 year after (T2) and 6 years after the end of treatment (T3)

From: Stability of transverse dental arch dimension with passive self-ligating brackets: a 6-year follow-up study

  

T0

DS

T1

DS

T2

DS

T3

DS

3–3 upper

Cusp

32.52

2.78

34.97

2.12

35.09

1.81

35.31

1.83

 

Centroid

29.00

2.51

30.27

1.81

30.35

1.67

30.53

1.64

 

Lingual

24.94

2.60

25.52

1.63

25.59

1.36

25.66

1.37

4–4 upper

Cusp

39.52

2.97

42.78

4.31

42.80

1.92

42.36

2.18

 

Centroid

34.22

2.71

37.49

2.34

37.10

1.55

36.56

1.86

 

Lingual

27.28

2.87

30.49

2.25

29.71

2.25

29.45

2.20

5–5 upper

Cusp

44.78

3.76

48.18

2.10

47.62

2.11

47.29

2.40

 

Centroid

39.42

3.42

42.38

1.88

41.82

1.95

41.45

2.24

 

Lingual

32.38

3.59

35.11

2.68

34.55

2.70

34.14

2.64

6–6 upper

Cusp

50.97

3.22

53.24

2.54

52.55

2.90

52.64

2.63

 

Centroid

45.61

2.94

47.00

2.23

46.88

2.31

46.73

2.55

 

Lingual

36.46

3.87

37.66

3.73

37.22

3.56

37.28

3.42

7–7 upper

Cusp

55.96

3.23

57.85

3.08

57.79

2.90

58.21

3.18

 

Centroid

50.36

3.14

51.68

2.97

51.62

2.85

52.12

3.16

 

Lingual

40.63

4.09

42.68

4.03

42.33

3.83

42.69

4.05

3–3 lower

Cusp

25.53

2.15

26.89

1.67

26.89

1.51

26.79

1.59

 

Centroid

22.97

1.69

23.92

1.35

23.76

1.06

23.74

1.23

 

Lingual

20.17

2.02

21.51

1.07

21.34

0.92

21.40

1.10

4–4 lower

Cusp

32.50

3.11

35.05

1.84

34.70

1.61

34.45

2.08

 

Centroid

29.46

2.59

31.83

1.49

31.33

1.41

30.85

1.77

 

Lingual

26.25

2.67

28.58

1.29

27.89

1.78

27.80

1.83

5–5 lower

Cusp

38.53

3.59

41.20

1.85

40.18

1.91

39.40

2.28

 

Centroid

34.76

3.41

37.05

1.55

36.10

1.72

35.34

2.07

 

Lingual

30.87

3.00

32.39

2.04

31.86

1.66

31.33

2.09

6–6 lower

Cusp

44.75

3.70

46.57

2.51

45.95

2.14

45.63

2.42

 

Centroid

41.03

2.58

42.26

2.00

41.68

1.99

41.35

2.45

 

Lingual

35.05

2.63

35.83

2.14

35.48

2.41

35.74

2.72

7–7 lower

Cusp

49.32

4.30

52.99

3.05

52.05

2.80

52.19

3.16

 

Centroid

46.18

2.76

47.83

4.53

47.77

2.35

47.76

2.51

 

Lingual

40.18

2.78

41.81

2.36

41.20

2.57

41.65

2.62