Polarography Can Successfully Quantify Heavy Metals in Dentistry

Area of Science:

• Environmental Health
• Pediatric Dentistry
• Analytical Chemistry

Background:

• Children's nutritional and behavioral patterns make their teeth sensitive indicators of long-term heavy metal exposure.
• Assessing heavy metal accumulation in children is crucial for understanding environmental health risks.

Purpose of the Study:

• To quantify the concentrations of zinc (Zn), copper (Cu), cadmium (Cd), and lead (Pb) in primary teeth of children from Zanjan, Iran.
• To evaluate the potential of primary teeth as biomarkers for heavy metal uptake.

Main Methods:

• Primary teeth samples were collected from children in Zanjan, Iran.
• Samples underwent acid digestion and analysis using a polarography device to determine metal concentrations.
• Statistical analysis, including an independent t-test, was employed to compare groups.

Main Results:

• Mean concentrations were Zn: 245 µg/g, Pb: 7.66 µg/g, Cu: 5.33 µg/g, and Cd: 0.0879 µg/g.
• These concentrations exceeded levels reported in studies from other countries.
• No significant differences in metal levels were observed based on age, tooth type, or jaw position.

Conclusions:

• Primary teeth serve as a valuable biological indicator for assessing heavy element concentrations in the human body.
• Elevated levels of Zn, Pb, Cu, and Cd in Zanjan children's teeth suggest significant environmental contamination in the region.