Table 2 Multivariate logistic regression model for rDSC

Gender

 Female

1

 Male

1.51

1.11

2.10

0.010*

0.42

Age (years)

 < 0.001*

 25–30

1

 31–35

0.55

0.37

0.83

0.004*

- 0.59

 36–40

1.51

0.89

2.55

0.124

0.41

 41–50

2.20

1.34

3.62

0.002*

0.79

 51–60

1.66

0.86

3.20

0.132

0.51

 ≥ 61

2.85

0.96

8.44

0.060

1.05

Orientation of third molar impaction

< 0.001*

 Vertical

1

 Distal

0.63

0.30

1.32

0.221

- 0.46

 Horizontal

1.36

0.71

2.59

0.352

0.31

 Mesial

3.62

1.98

6.59

< 0.001*

1.29

 Transverse

6.36

0.36

111.74

0.206

1.85

Contact point localisation: MB cusp position

0.021*

 No contact

1

 Above

5.36

1.30

22.16

0.020*

1.68

 At

3.67

1.21

11.13

0.021*

1.30

 Below

4.21

1.67

10.59

0.002*

1.44

Loss of lamina dura

 < 2 mm

1

 ≥ 2 mm

6.55

3.71

11.60

 < 0.001*

1.88

mDMFT-R (%)

 < 0.001*

 0

1

 1–15

2.57

1.20

5.51

 < 0.015*

0.95

 16–30

3.72

1.91

7.25

0.001*

1.32

 31–45

3.37

1.74

6.55

0.001*

1.22

 46–60

3.77

1.93

7.40

0.001*

1.33

 61–75

2.49

1.27

4.87

0.008*

0.91

 ≥ 75

6.10

2.93

12.70

0.001*

1.81