Table 1 Association between Caries, periodontal status and age, drug abuse duration and tooth brushing habits of former meth users (N = 162)

Age group

2.88 ± 2.51

2.51 ± 3.23

0.29 ± 0.80

5.68 ± 4.61

2.40 ± 0.71

2.53 ± 3.04

3.68 ± 4.53

0.39 ± 1.02

6.62 ± 5.78

2.87 ± 0.78**

Drug abuse duration

2.17 ± 1.99

2.57 ± 2.64

0.25 ± 0.77

4.99 ± 3.47

2.39 ± 0.71

3.20 ± 3.25*

3.52 ± 4.78

0.42 ± 1.21

7.14 ± 6.20*

2.84 ± 0.78**

Tooth brushing frequency

3.03 ± 2.98

2.95 ± 3.19

0.38 ± 1.10

6.37 ± 4.79

2.64 ± 0.80

1.94 ± 2.01*

3.38 ± 5.40

0.23 ± 0.81

5.55 ± 6.12

2.60 ± 0.74

Tooth brushing time

2.53 ± 2.56

3.33 ± 3.87

0.15 ± 0.58

6.00 ± 5.04

2.67 ± 0.80

2.78 ± 2.85

2.99 ± 3.98

0.40 ± 1.13

6.17 ± 5.28

2.61 ± 0.78

Total

2.72 ± 2.78

3.07 ± 3.94

0.33 ± 1.03

6.13 ± 5.20

2.63 ± 0.78

0–21

0–25

0–8

0–28

1-4

79.01%

72.22%

14.20%

90.74%

–