Grobler S R, Rossouw R J, Kotze D
Arch Oral Biol. 1985;30(11-12):819-20. doi: 10.1016/0003-9969(85)90137-2.
Lead pollution can produce a variety of effects on the human body. Shed deciduous teeth were collected from primary school children in urban, suburban and rural areas in South Africa. The lead content was determined through atomic-absorption spectrophotometry. The average circumpulpal dentine lead levels in the urban, suburban and rural samples are 74.5, 44.3 and 26.5 parts/10(6) respectively. From the results it is clear that this most inner part of dentine (approximately 300 microns thick) can concentrate up to five times more lead than the total dentine. Comparison of the lead ratio of circumpulpal dentine to that of the total dentine for the different areas demonstrates the greatest tendency for preferential lead accumulation in the circumpulpal dentine. Lead analysis of circumpulpal dentine revealed that in deciduous teeth the lead level was related to the degree of industrialization.
铅污染会对人体产生多种影响。从南非城市、郊区和农村地区的小学生中收集脱落的乳牙。通过原子吸收分光光度法测定铅含量。城市、郊区和农村样本中牙髓周围牙本质的平均铅含量分别为74.5、44.3和26.5份/10⁶。从结果可以明显看出，牙本质的这个最内部部分（约300微米厚）能够比整个牙本质多浓缩四倍的铅。不同地区牙髓周围牙本质与整个牙本质的铅比率比较表明，牙髓周围牙本质中铅优先积累的趋势最为明显。牙髓周围牙本质的铅分析表明，在乳牙中铅含量与工业化程度有关。
