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CHANGES INDUCED BY THE DECREASE OF SALIVARY PH ON THE HARDNESS OF THE DENTAL ENAMEL
Abstract
Introduction. The objective of this investigation is to pinpoint the influence of the salivary pH on the hardness of the dental enamel. Method. The study was realized using recently extracted 6 non-carious wisdom teeth, that were immersed in solutions of different pH (between 2.5 and 6.5) for 3 minutes, solutions that would simulate the pH of the oral cavity in patients with a potential condition of gastroesophageal reflux disease. The hardness of the enamel was tested using the Vickers method. Results show that there are no statistically significant differences (p> 0.05) between the average values of hardness of the specimens immersed in pH 5.5, 6.5 and control group specimens, while among all other specimens immersed in pH = 2.0 to 5.0 compared to the control group sample, there are statistically significant differences (p <0.05). Conclusion. The study highlighted the fact that lowering the pH value also entails a decrease in the dental enamel hardness, which is significantly depreciating.
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