South African dental academics put blocks of children’s extracted molars in solutions of sugar, xylitol, erythritol and stevia.Stevia is a plant in the chrysanthemum family. It comes as a liquid and a powder – or you can grow it and sweeten drinks with a leaf.
Dentists from the universities of Pretoria and the Western Cape fed sugar and the alternative sweeteners to the bacteria that cause most cavities in teeth. In the stevia solution, a scanning electron microscope found only a few traces of struggling bacterial cells, and acidity was lower than in any other sample. Erythritol came second, and xylitol third.
“This level of acidity and below leads to disintegration of the organic compound of the enamel and dentine, leading to demineralisation and subsequent cavity formation,” said the research team led by Nadine Moelich from Pretoria. “Untreated dental caries have many detrimental effects which can affect the physical development and reduce the quality of life of affected children. Furthermore, long-term untreated dental caries can result in school absenteeism, low body mass index, and poor educational outcomes.Stevia comes as a liquid and a powder - or you can grow it from seed and use the leaves to sweeten drinks - but products that use it as a sugar replacement are not widely available.
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