Acid erosion is primarily caused by acids contained in many everyday acidic foods and drinks, including some healthy choices like fruit and juices. When acid comes into contact with teeth, the hard enamel surface can temporarily soften, leaving it more vulnerable to damage from contact with other surfaces such as other teeth and a toothbrush.
Brushing too hard can speed up wear caused by the acids contained in food and drink. This is particularly important in the minutes after eating or drinking acidic foodstuffs when enamel is most susceptible to damage. Other causes can be regular use of acidic medication or gastric reflux.
Protecting your teeth from acid erosion begins by understanding exactly what it is, what causes it, how it differs from cavities and what you can do to prevent it.