Author/Editor		Jan, J
Title		Vpliv s polikloriranimi bifenili onesnaženega okolja na nastanek razvojnih okvar sklenine
Translated title		Environmental pollution with PCBs and its influence on developmental defects in dental enamel
Type		članek
Source		Zobozdrav Vestn
Vol. and No.		Letnik 54, št. 5
Publication year		1999
Volume		str. 126-30
Language		slo
Abstract		The influence of long-term exposure to PCBs on developmental defects in dental enamel was studied in a group of 202 children 8-14 years of age with known pre- and postnatal exposure to PCBs in a contaminated region in Bela Krajina (Slovenia). The control group group comparised the same number of children from an uncontaminated area, who were matched for age and sex with the study group.. Risk assessment was based on analysis of the dietary levels of toxic PCB congeners, measured by high resolution gas chromatography with electron capture detection. The prevalence of the defects was determined using the FDI index. The results showed that 71.3% of the exposed children and only 49.5% of the children in the control group had one or more affected permanent teeth. Enamel ebnormalities were found in 21.9% of permanent index teeth in the study group and in 12.7% of those in the control group. The difference between the groups was statistically significant (hi square = 84.2, p(0.001), mainly an account of demartcated opacities and hypoplasia. The results suggest that the dietary levels of PCBs observed in the study group can play an important part in the occurrence of developnental enamel defects.
Descriptors		DENTAL ENAMEL ENVIRONMENTAL POLLUTION DEVELOPMENTAL DISABILITIES CHILD SLOVENIA FOOD CONTAMINATION