Background and objectives: Saliva is detrimental to both general and oral health. Though the effects osf moking on oral mucosa had been demonstrated, independent variables of saliva such as salivary low, pH, and combined effect on the dental caries experience is unknown and worthy of investigation. Materials and methods: A cross-sectional study was conducted to determine the Salivary Flow Rate (SFR) and salivary pH in smokers and non-smokers with and without dental caries. The study was conducted at Rajarajeswari dental college and hospital, Bangalore on 120 patients categorized into four groups, smokers with dental caries (30 subjects), smokers without dental caries (30 subjects), nonsmokers with dental caries (30 subjects) and non-smokers without dental caries (30 subjects) unstimulated saliva was collected from the subjects and salivary low rate and salivary pH was measured. Results: The mean salivary low rate (mean salivary low–0.415 ml/min) and salivary pH (mean pH 5.4) was significantly lower among smokers than nonsmokers which was statistically significant (p<0.001). A statistically significant negative correlation of salivary pH among smokers with dental caries was found. Conclusion: Salivary low rate and pH was reduced among smokers than non-smokers. In both smokers and non-smokers, subjects with dental caries had lower salivary low rate, pH.
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