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  • Title: Evaluation of acidity and total sugar content of children's popular beverages and their effect on plaque pH.
    Author: Saeed S, Al-Tinawi M.
    Journal: J Indian Soc Pedod Prev Dent; 2010; 28(3):189-92. PubMed ID: 21157052.
    Abstract:
    BACKGROUND: In the developing countries, dental caries has increased with the increased exposure to dietary sugars. There is no data on the cariogenicity and acidogenicity of popular beverages in the Syrian market. AIMS: To investigate the endogenous pH, titratable acidity, and total sugar content of popular beverages (cola, orange juice, and full-fat milk), and assess plaque pH drop after consumption. SETTINGS AND DESIGN: Twenty-five healthy children with a mean age of 11.8 ± 0.6 years were recruited for this single blinded study. MATERIALS AND METHODS: The pH of beverages was measured by a digital pH meter and the titratable acidity was expressed as the volume of 0.1 N sodium hydroxide required to neutralize the beverage. The total sugar content was estimated using High Performance Liquid Chromatography. Children rinsed with 15 mL of each of the beverages for 1 min. The controls used were 10% sucrose and 10% sorbitol solutions. The plaque pH was assessed before and after rinsing. STATISTICAL ANALYSIS: Statistical analysis was performed using analysis of variance followed by Bonferroni test to assess minimum pH, maximum pH drop, and the area under curve. P value was set as 0.05. RESULTS: Both cola and orange juice had a low pH and similar total sugar content in contrast to the high pH and low sugar content of milk. Cola and orange juice were not statistically different from 10% sucrose (P > 0.05), but different from 10% sorbitol (P < 0.05), in contrast to milk, for all the parameters studied. CONCLUSION: Cola and orange juice are cariogenic/acidogenic and frequent intake should be discouraged. A reasonable intake of unsweetened milk may be advised safely.
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