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. Author manuscript; available in PMC: 2007 Mar 9.
Published in final edited form as: Int J Hyg Environ Health. 2006 Jan 27;209(2):109–121. doi: 10.1016/j.ijheh.2005.11.005

Table 5.

Saliva lead and dental caries

Means of decayed surface
(Group)/lead levels Sample size, n D1Sa D2Sb
(1) 0.1<Lead level≤0.99 265 30.22 ± 1.26 9.98 ± 1.11
(2) 1.0≤Lead level≤4.99 483 31.49 ± 1.13 10.36 ± 0.77
(3) 5.0≤Lead level≤9.99 74 27.26 ± 1.40 7.28 ± 0.87
(4) Lead level≥10.0 36 26.06 ± 2.49 8.52 ± 1.54
p-value = 0.081 p-value = 0.087
Mean number of DMF surface
(Group)/lead levels Sample size, n D1MFSc D2MFSd
(1) 0.1<Lead level≤0.99 265 45.69 ± 1.97 27.12 ± 2.12
(2) 1.0 ≤ Lead level≤4.99 483 48.36 ± 1.61 28.87 ± 1.49
(3) 5.0 ≤ Lead level≤9.99 74 44.76 ± 3.19 26.58 ± 3.87
(4) Lead level≥10.0 36 45.60 ± 4.10 29.76 ± 3.73
p-value = 0.564 p-value = 0.892
a

D1S: Number of decayed surfaces at level 1 (including non-cavitated enamel lesions).

b

D2S: Number of decayed surfaces at level 2 (including only dentinal or cavitated lesions).

c

D1MFS: Weighted number of decayed, missing and filled surfaces at level 1 (including non-cavitated enamel lesions).

d

D2MFS: Weighted number of decayed, missing and filled surfaces at level 2 (including only dentinal or cavitated lesions).