Toothpaste alone does not prevent dental erosions. D ental erosion occurs when hard tissue is lost due to acidic break down combined with abrasive brushing or tongue movements.Continuous erosion can expose the underlying dentine, which causes people to suffer sensitivity and pain. After analysing nine fluoridated toothpastes that are available in India,including Colgate and Sensodyne Rapid Relief, researchers found enamel loss still occurs to some extent despite regular brushing. Speaking of the importance of a complete oral-care regimen, study author Dr Samira Helena João-Souza, from the University of São Paulo said 'Dental erosion is multifactorial. It has to do with brushing, and above all, with diet. 'Food and drink are increasingly acidic as a result of industrial processing.' The researchers plan to conduct a similar experiment that also measures any pain relief. The researchers created 150 enamel samples out of premolar teeth, which were preserved unt