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Progress in Orthodontics

Table 3 Descriptive statistics of cortical bone thickness outcomes

From: Evaluation of bone depth, cortical bone, and mucosa thickness of palatal posterior supra-alveolar insertion site for miniscrew placement

 

Cortical bone thickness

 

Mean

Standard deviation

Minimum

Maximum

 

P2-M1

M1F

M1-M2

P2-M1

M1F

M1-M2

P2-M1

M1F

M1-M2

P2-M1

M1F

M1-M2

− 2P(45°)

1.5

1.3

1.3

0.4

0.5

0.7

0.7

0.4

0.4

2.6

2.4

3.9

zeroP(45°)

1.7

1.5

1.7

0.5

0.6

0.8

0.6

0.7

0.5

3.3

3.1

4.6

 + 2P(45°)

1.8

1.7

1.6

0.6

0.7

0.6

0.8

0.7

0.7

4.7

4.4

3.0

− 2P(60°)

1.3

1.2

1.2

0.5

0.5

0.4

0.6

0.4

0.5

2.9

2.4

2.3

zeroP(60°)

1.6

1.3

1.4

0.6

0.5

0.7

0.6

0.6

0.6

3.2

2.6

4.3

 + 2P(60°)

1.6

1.5

1.8

0.6

0.5

0.8

0.7

0.6

0.8

3.6

2.5

3.9

− 2P(75°)

1.2

1.2

1.2

0.4

0.5

0.4

0.5

0.5

0.6

2.2

2.3

2.4

zeroP(75°)

1.4

1.3

1.5

0.4

0.5

1.0

0.7

0.5

0.5

2.4

3.0

6.2

 + 2P(75°)

1.9

1.6

1.6

0.6

0.7

1.0

0.7

0.6

0.6

3.4

4.6

5.1

  1. Values are reported in millimeters (mm). Outcomes were evaluated between second premolar and first molar (P2-M1), at the furcation of the first molar (M1F) and between the first molar and the second molar (M1-M2). Insertion axes were traced passing through 3 landmarks: zero point (zeroP), 2 mm cranial to zeroP (− 2P), and 2 mm caudal to zeroP (+ 2P). Insertion axes were also traced at three different angulations (45°, 60°, and 75°) compared to the occlusal plane
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