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Table 3 Descriptive statistics for the heavy metal concentrations (μg/g) in impacted wisdom teeth and in the bone surrounding the impacted teeth

From: Selected toxic and essential heavy metals in impacted teeth and the surrounding mandibular bones of people exposed to heavy metals in the environment

  

Samples from people living in Bielsko-Biala (n = 33)

Samples from people living in Ruda Slaska (n = 34)

p - level*

 

Sample

Mean ± standard deviation

Min - Max

95% conf. limits of mean

Mean ± standard deviation

Min - Max

95% conf. limits of mean

 

Pb

Teeth

10.29 ± 1.90

6.24 - 14.26

9.09 - 12.49

13.23 ± 1.93

6.26 - 18.10

11.21-15.25

0.038a

Bone

3.53 ± 2.02

1.04 - 8.44

2.85 - 4.28

7.95 ± 2.66

2.06 - 13.30

7.02 - 8.88

<0.001a

Cd

Teeth

0.10 ± 0.02

0.07 - 0.14

0.09 - 0.12

0.12 ± 0.02

0.08 - 0.15

0.12 - 0.13

0.006a

Bone

0.68 ± 0.36

0.05 - 1.38

0.55 - 0.81

0.97 ± 0.42

0.10 - 1.84

0.82 - 1.11

0.004a

Fe

Teeth

10.31 ± 1.99

7.14 - 14.87

9.60 - 11.01

10.48 ± 1.85

7.80 - 14.24

9.83 - 11.12

0.677

Bone

19.08 ± 12.69

4.24 - 48.16

14.58 - 23. 58

17.61 ± 9.23

3.74 - 45.57

14.39 - 20.83

0.588

Mn

Teeth

3.58 ± 0.45

2.99 - 4.52

3.42 - 3.74

3.76 ± 0.45

2.94 - 4.69

3.60 - 3.92

0.960

Bone

1.64 ± 1.10

0.12 - 4.03

1.25 - 2.03

4.05 ± 2.36

0.29 - 7.17

3.23 - 4.87

<0.001a

Cr

Teeth

5.73 ± 1.65

3.06 - 8.36

5.14 - 6.32

5.54 ± 1.57

3.63 - 8.67

4.99 - 6.09

0.767

Bone

1.76 ± 1.70

0.19 - 13.74

0.96 - 2.56

3.79 ± 4.20

0.15 - 14.72

2.33- 5.26

0.016a

Cu

Teeth

8.83 ± 1.30

6.02 - 11.58

8.37 - 9.29

9.13 ± 1.11

6.02 -11.30

8.75 - 9.52

0.359

Bone

6.86 ± 3.87

1.49 - 15.60

5.49 - 8.23

13.77 ± 7.73

4.39 - 27.74

11.07 - 16.47

<0.001a

Zn

Teeth

297.31 ± 44.73

201.36 - 382.02

281.44 - 313.17

314.87 ± 59.37

208.54 - 439.30

294.16 - 335.59

0.113

Bone

155.76 ± 38.38

72.99 - 237.02

142.15 - 169.36

229.10 ± 107.96

85.78 - 443.74

191.43 - 266.77

<0.001a

  1. n number of samples
  2. * p-levels, determined using Student’s t-tests, used to identify statistically significant differences between the mean heavy metal concentrations in the samples provided by people living in Bielsko-Biala and Ruda Slaska
  3. a indicates the heavy metal concentrations in the samples provided by people living in Bielsko-Biala and Ruda Slaska were significantly different