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Table 2 Paired t-test of alveolar bone thickness/volume and PP-U1 angle

From: Three-dimensional (3D) quantitative evaluation of the morphological changes of the upper anterior alveolar bone after retraction of a maxillary incisor

Variables

T1

T2

P Value

Alveolar volume (mm3)

1297.5 ± 128.4

1076.4 ± 166.9

*

Total alveolar thickness (mm)

S1

8.34 ± 0.65

7.91 ± 0.55

*

S2

8.97 ± 0.92

8.01 ± 0.63

*

S3

9.08 ± 0.89

8.30 ± 0.59

*

Labial alveolar thickness (mm)

S1

1.23 ± 0.31

1.35 ± 0.36

*

S2

1.37 ± 0.40

1.48 ± 0.48

*

S3

1.65 ± 0.41

1.68 ± 0.39

NS

Palatal alveolar thickness (mm)

S1

1.34 ± 0.26

1.06 ± 0.21

*

S2

2.17 ± 0.49

1.61 ± 0.37

*

S3

2.98 ± 0.58

2.15 ± 0.42

*

PP-U1 axis (degree)

124 ± 4.5

115 ± 4.9

*

  1. Values are presented as mean ± standard deviation.
  2. *=P < 0.05
  3. NS: No significant differences.