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  • Title: Erosive potential of beverages sold in Australian schools.
    Author: Cochrane NJ, Cai F, Yuan Y, Reynolds EC.
    Journal: Aust Dent J; 2009 Sep; 54(3):238-44; quiz 277. PubMed ID: 19709112.
    Abstract:
    BACKGROUND: Dental erosion is an increasingly prevalent problem in Australia. The aim of this study was to analyse the composition and erosive potential of beverages sold for consumption in Victorian schools. METHODS: Fifteen drinks were selected and analysed to determine their pH, titratable acidity and ionic composition (calcium, fluoride and inorganic phosphate). The erosive potential of the beverages was measured by analysing weight loss, surface loss and the release of calcium ions from human enamel following a 30-minute or 24-hour exposure. The association of the chemical parameters with the measures of erosion was determined using Spearman's rank correlation. RESULTS: All beverages tested except the milks and the bottled water produced significant dental erosion in vitro. The only chemical parameter that correlated significantly with all measures of erosion was the initial pH of the beverage (p < 0.01). Levels of fluoride similar to those of Australian reticulated water were found in the carbonated beverages. CONCLUSIONS: The majority of the tested beverages sold from school canteens exhibited erosive potential.
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