Table 5 Changes in the labial and palatal alveolar bone area in central and lateral incisors before (T0) and after treatment (T1)

Mean

SD

25% Percentile

Median

75% Percentile

Mean

SD

25% Percentile

Median

75% Percentile

P Value

Central incisor

Labial

6.2

2.3

5.0

5.8

7.0

6.1

2.3

4.4

6.3

7.4

0.9^W

Palatal

20.3

5.3

15.7

19.3

24.7

16.1

11.2

8.7

13.5

20.3

< 0.001^W

Lateral incisor

Labial

4.0

2.2

2.6

3.7

5.1

4.6

2.2

2.9

4.7

6.2

0.1^W

Palatal

18.0

5.9

13.9

17.2

21.4

10.5

7.6

4.3

9.4

15.3

< 0.001^W