The protective effect of fluoride against the erosion of dental hard tissue
Cardiff Metropolitan University
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The erosive effect of acidic soft drinks on tooth tissue has been frequently reported in the literature (Eccles and Jenkins 1974). The phenomena is believed to be increasing due to the “health diet" and longevity of the natural dentition (Hand et al 1986). Fluoride is known to have an effect in reducing enamel solubility hence, the aim of these investigations was to determine whether fluoride preparations affect erosion attributed to citric acid and citric acid based preparations. Fluoride was applied by various modes. Firstly, fluoride was added to the acidic soft drinks prior to acid exposure. Secondly, topical fluoride application to the enamel surface in the form of toothpastes, mouthwashes and gel was investigated prior to acid exposure. Results indicated both methods reduced enamel erosion considerably after 30 minutes with exposure to citric acid and citric acid based products. The study was entirely laboratory-based. The majority of results demonstrated the addition of lppm (0.001mg/ml) fluoride to the acid solution reduced erosion to a greater degree than pre-treating the enamel surface with a fluoride product of much higher free fluoride concentration. In conclusion fluoride pre-treatment either in the form of enamel surface treatment or addition to the acidic component reduced erosion of tooth tissue significantly.
Institute research diploma