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Scientifica (Cairo). 2016;2016:5027283. doi: 10.1155/2016/5027283. Epub 2016 Mar 8.

Effect of Various Sugary Beverages on Salivary pH, Flow Rate, and Oral Clearance Rate amongst Adults.

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Department of Public Health Dentistry, K.D. Dental College & Hospital, Mathura, India.
Department of Public Health Dentistry, GDC Kottayam, Kerala, India.
Department of Public Health Dentistry, Best Dental College, Madurai, India.
Department of Public Health Dentistry, Vyas Dental College and Hospital, Jodhpur, India.
Department of Conservative Dentistry & Endodontics, K.D. Dental College & Hospital, Nh 2, Delhi Mathura Road, Chattikara, Mathura 281006, India.



Diet is a major aetiological factor for dental caries and enamel erosion. This study was undertaken with the aim of assessing the effect of selected locally available beverages on salivary pH, flow rate, and oral clearance rate amongst adults.


This clinical trial comprised 120 subjects. Test beverages undertaken were pepsi, fruit drink, coffee, and sweetened milk. Statistical analysis was carried out using SPSS version 17. Descriptive statistics, one-way ANOVA, and post hoc Tukey's test were applied in the statistical tests.


It was found that salivary pH decreased for all the beverages immediately after consumption and the salivary flow rate increased after their consumption. The oral clearance rate of sweetened milk was found to be the least at 6.5 minutes and that of pepsi was found to be 13 minutes. However, the oral clearance rates of fruit drink and coffee were found to be equal at 15 minutes.


Although it was found out that liquids cleared rapidly from the oral cavity, they had a significant cariogenic and erosive potential. Hence, it is always advised to minimise the consumption of beverages, especially amongst children and young adults to maintain a good oral health.

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