Dental erosion is described as an irreversible loss of dental hard tissue resulting from exposure to non-bacterial acids or chelating substances. It may be caused by exogenous or endogenous factors. In the former case, food, drink, as well as the environment might be sources of acids; in the latter, acids flowing into the oral cavity from the stomach and duodenum. Exogenous dental erosive lesions are localized mainly on the labial surfaces of the anterior teeth of the maxilla, while the endogenous ones can be found on the palatal and masticatory surfaces of the maxilla and the masticatory and buccal surfaces of the mandible. Reduced saliva secretion, which occurs in a number of diseases, also influences dental erosion, while erosion-causing factors and aggressive tooth brushing immediately after consuming acidic food increases the range and depth of erosion cavities. The consequence of dental erosion is teeth hypersensitivity, which results from exposure of dental tubules and of the pulp leading to the loss of tooth vitality and decrease in occlusal height. Treatment of exogenous dental erosion consists in changing nutritional and hygienic habits. In the case of endogenous erosion, however, the therapy should address mainly an underlying disease. Worn teeth surfaces should be restored with conservatory or/and prosthetic methods. In the context of an increasing prevalence of dental erosion in the population, it is necessary to develop and implement prophylactic measures, inclu
Expanding on Logicbird's answer , here is what the British Dental Health Foundation says: Acidic foods and drinks, such as oranges, grapefruit and fruit juices that are often eaten at breakfast time, soften the enamel on your teeth . Brushing immediately afterward wears the enamel away , and can cause dental erosion, which may lead to pain and extreme sensitivity in the teeth, and also lead to cosmetic problems. The saliva in your mouth neutralises the acidity and restores its natural balance. However research has shown that this can take up to an hour . Their tips for avoiding dental erosion are: brush teeth before breakfast if you have fruit or fruit juice, or wait one hour after eating or drinking anything acidic before brushing use a straw when drinking acidic drinks to reduce contact with teeth drink water and milk between meals in preference to juice and fizzy drinks chew sugar-fre
If brushing your teeth with traces of acid in your mouth really is dangerous, shouldn't we hear about it without mentioning of vomit? Yes, and we do (from Colgate ): You should know, however, that brushing your teeth after eating can sometimes affect your tooth enamel. According to the Mayo Clinic , if you've consumed anything acidic, you should avoid brushing your teeth for at least 30 minutes. Foods containing citric acid, like oranges, grapefruits and lemons, weaken tooth enamel. Brushing too soon after eating them can damage the enamel in its weakened state. If you don't trust corporate sources, note the Mayo Clinic link that says the same thing. Avoid brushing teeth immediately after exposing them to acid. That source doesn't mention vomiting, but here's a link from a bulimia support group that does mention vomiting. It agrees with your original source. Do not brush your teeth immed
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