No

Subjects

Place

Tooth Type

Element

Levels (ppm)/ (µg/g ± SD)

Method

Ref.

1

Children 5 - 7 yr old

Non-urban

DT

Cd

0.028 ± 2.5

AAS

[5]

Urban

0.03 ± 2.63

2

Normal subjects

PT

As

0.060

NAA

[22]

3

Children

North Carolina

Incisors-DT

F

792 ± 402

Ion specific electrode

[19]

molars-DT

768 ± 489

4

Healthy Children

Southern Poland

DT

Mn

Fe

Cu

Cr

4.39 ± 3.72

51.0 ± 23.9

4.62

8.97 ± 1.94

AAS

[24]

5

Children

Dalmatia & Novigrad, Yugoslavia

Enamel of caries free teeth

V

3.7 ± 1.5 ng∙g1

NAA

[25]

6

Adults

Finland

PT

Ni

0.9 ± 0.7 pg/g

AAS

[21]

7

Children of 5 to 12 yr

Jordan

DT

Cd

Cu

Fe

Zn

0.55

6.23

34.72

128.21

ICP

[9]

8

Women

Kyoto

Enamels of molar teeth

(PT)

Hg

Cu

Zn

1.7 ± 0.2 ng/g

0.9 ± 1.1

150 ± 24.6

ICP-MS

[13]

9

6-yr-olds children

9-yr-old children

Finland

DT incisors

DT canines

Zn

Sr

Zn

Sr

150 ± 29

63 ± 18

142 ± 22

85 ± 13

PIXE

[11]

10

Male and Female children

Merida, Venezuela

Healthy DT

Sr

Cu

Zn

38.37 ± 4.82

1.21 ± 0.86

85.33 ± 12.98

AAS

[6]

11

Subjects from high Sr areas

Subjects from low Sr areas

Fort Recovery

Delphos

Rochester

PT

Sr

564.0

485.5

80.2

AAS

[26]