If you have just eaten some orange slices or sipped some lemonade, you may not want to brush your teeth quite yet. Citrus based foods and drinks leave acid on your teeth. Dr. Bilal Saib from Chapel Hill Advanced Dentistry says, “immediately brushing will rub the acid even more into your teeth and can erode enamel.”
Enamel is the protective coating on your teeth. Under the enamel is a softer layer that will get exposed known as dentin. This exposed layer is the reason why you might have heightened painful tooth sensitivity when drinking hot and cold beverages. And, enamel does not grow back. So once it is gone, it is gone for good.
Dr. Saib suggests waiting an hour after eating or drinking anything citrusy. Other acidic foods and drinks that can cause harm to your teeth: soda (regular and diet), sports drinks, fruit juice, white bread, maple syrup, cottage cheese, raisins, and even wine.