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Air Quality Criteria for Lead Volume II of II - (NEPIS)(EPA) - US ...

Air Quality Criteria for Lead Volume II of II - (NEPIS)(EPA) - US ...

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AX5-145<br />

Table AX5-8.8. Effects <strong>of</strong> <strong>Lead</strong> on Teeth—Dental Caries<br />

Compound<br />

Dose/Concentration<br />

Duration Exposure<br />

Route Species Effects Blood Level Reference<br />

Pb acetate<br />

0.5 mEq<br />

84 days males<br />

98 days females<br />

Drinking water<br />

Pb acetate<br />

34 ppm<br />

Pre- and perinatal<br />

Drinking water<br />

Pb acetate<br />

10 or 25 ppm Pb<br />

3 wks<br />

Drinking water<br />

Abbreviations<br />

mEq—milliequivalents<br />

d—days<br />

ppm—parts per million<br />

%—percent<br />

µg—microgram<br />

dL—deciliter<br />

Hamster Significant increase in dental caries in male hamsters only<br />

(85 mean molar caries score control vs. 118 <strong>for</strong> Pb exposed).<br />

No significant difference in dental caries in female hamsters<br />

(68 mean molar caries score control vs. 85 <strong>for</strong> Pb exposed).<br />

Rat Pb exposure resulted in an almost 40% increase in the<br />

prevalence <strong>of</strong> caries and nearly 30% decrease in stimulated<br />

parotid salivary gland function.<br />

Rat When 15 ppm fluoride was concurrently given in diet, Pb did<br />

not increase prevalence <strong>of</strong> caries.<br />

Not given Wisotzky and Hein (1958)<br />

Control:

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