Lead levels in primary teeth in children from urban and rural areas in Ethiopia.

BACKGROUND

Lead (Pb) is one of the most important and widely distributed pollutants in the environment. Lead concentration in human primary teeth reflects children's exposure to the metal during early life. OBJECTIVE.: In this study we wanted to get preliminary information of the level of lead exposure in Ethiopian children in rural as well as urban areas.

METHODS

Primary incisors, exfoliated 1998-2000, were collected from Addis Ababa, the capital, and two rural villages in the Rift Valley. The teeth were analyzed for lead concentrations by graphite furnace atomic absorption Spectrophotometry.

RESULTS

Very high lead concentrations were not found. However, teeth from Addis Ababa had statistically significant higher lead concentrations than teeth from the Rift Valley. Teeth from both villages showed very low Pb-concentrations, but one village (Village A) had significantly higher concentrations than the other (Village K). The living conditions of the two villages were similar, the main diference being the fluoride content of the drinking water. The village with the lowest tooth-lead had the highest fluoride concentration.

CONCLUSION

Our findings indicate that child lead exposure in Ethiopia is relatively low, especially in the rural populations.