Dietary Fluoride Intake by Children: When to Use a Fluoride Toothpaste?

Area of Science:

• Environmental Health
• Pediatric Dentistry
• Toxicology

Background:

• Fluoride is essential for preventing tooth decay but excessive intake poses health risks, notably dental fluorosis.
• Dental fluorosis prevalence is rising, linked to improper use of fluoride supplements and toothpaste ingestion, especially in low-fluoride water areas.
• Volcanic regions, like Castelli Romani, Italy, may have naturally higher fluorine concentrations, necessitating localized risk assessment.

Purpose of the Study:

• To assess fluoride intake and the risk of dental fluorosis in young children (6 months-6 years) in the Castelli Romani area.
• To quantify fluoride levels in local drinking water, mineral waters, vegetables, and children's toothpaste.
• To inform public health recommendations regarding fluoride exposure in this specific region.

Main Methods:

• Fluoride concentrations were measured using a Fluoride Ion Selective Electrode (GLP 22, Crison, Esp).
• Samples included tap water, mineral waters, vegetables, and commercial children's toothpaste.
• Statistical analysis involved descriptive statistics and Student's t-test for sample comparisons.

Main Results:

• Tap water fluoride levels ranged from 0.35 to 1.11 ppm, with Pavona showing significantly higher concentrations (p ≤ 0.05).
• Mineral water samples contained fluoride ranging from 0.07 to 1.50 ppm.
• Certain vegetables exhibited elevated mean fluoride levels compared to controls (p ≤ 0.05).

Conclusions:

• Involuntary ingestion of fluoride toothpaste by young children (6 months-4 years) in high-fluoride areas presents a potential risk.
• Prescribing fluoride toothpaste requires careful consideration in regions with naturally elevated fluoride content.
• Further research and localized guidelines are needed to manage fluoride intake and prevent dental fluorosis in vulnerable populations.