Table 3 The vertical distance between the posterior maxillary roots apices and the maxillary sinus floor related to age, gender, sides, and scores in the sagittal view

Age

20-30

5.4±4.7

2.4±3.9

1.1±3.3

1.3±3.2

1.4±4.3

0.4±3.2

0.9±3.4

1.8±3.9

<0.001

>30

8.0±5.1

4.2±4.6

2.8±4.0

2.7±3.7

2.9±4.7

1.3±3.7

2.1±4.2

3.1±4.5

<0.001

P-value*

<0.001

<0.001

<0.001

<0.001

<0.001

0.007

0.002

0.002

Gender

Male

6.0±5.1

2.7±4.5

1.6±4.0

1.7±3.9

1.5±4.9

0.4±3.8

1.0±4.2

1.8±4.4

<0.001

Female

6.1±4.7

2.9±3.8

1.5±3.1

1.6±2.9

2.1±3.9

0.8±2.8

1.4±3.0

2.5±3.8

<0.001

P-value*

0.339

0.027

0.117

0.036

0.003

<0.001

<0.001

0.003

Side

Right

6.0±5.0

2.9±4.2

1.5±3.6

1.6±3.4

1.8±4.5

0.7±3.4

1.2±3.7

2.3±4.2

<0.001

Left

6.1±4.9

2.8±4.0

1.5±3.5

1.6±3.4

1.8±4.4

0.6±3.3

1.2±3.7

1.9±4.0

<0.001

P-value*

0.621

0.782

0.907

0.824

0.843

0.69

0.735

0.437

Score

Type 1

6.8±4.7

5.4±3.8

4.2±3.3

4.0±3.4

5.3±3.8

3.7±3.0

4.1±3.4

4.6±3.7

<0.001

Type 2C

0.01±0.01

0.01±0.01

0.01±0.01

0.01±0.01

0.01±0.01

0.01±0.01

0.01±0.01

0.01±0.01

0.765

Type 2LC

0.01±0.00

0.02±0.03

0.01±0.00

0.01±0.00

0.01±0.01

0.01±0.01

0.02±0.01

0.01±0.00

0.143

Type 2P

-1.0±0.5

-1.3±0.8

-1.6±1.2

-1.3±1.0

-2.1±1.4

-2.0±1.3

-1.8±1.2

-2.0±1.4

<0.001

P-value^ª

<0.001

<0.001

<0.001

<0.001

<0.001

<0.001

<0.001

<0.001