Tooth Decay

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Tooth Erosion: The Harmful Effects of Acid

What is Tooth Erosion?

Tooth erosion (ee-ROW-shun) happens when the protective, outer layer of your tooth (enamel) begins to wear away, exposing the layer beneath it (dentin). When the enamel thins out, your tooth protection is weakened and the inside layers can be exposed to more acid and bacteria. This puts you at a greater risk of having problems like decay, cavities and infection. 

Acid Is a Main Cause of Tooth Erosion

Tooth erosion happens from several causes that have one thing in common — acid exposure. The amount of acid that your tooth is exposed to can be a major reason why you could have tooth erosion. These are some main ways that acid can erode your teeth.

  • Drinking beverages that have high levels of acid. This includes sodas, fruit juices, sports drinks and energy drinks.
  • Acid Reflux/GERD. Acid reflux happens when acids from your stomach travel up your throat and into your mouth. Heartburn is how people sometimes describe acid reflux. If you have heartburn most days or nights, then you may have acid reflux disorder — which is also called GERD. This acid from your stomach can cause erosion on the inside surfaces of your teeth.
  • Eating disorders. People with an eating disorder known as bulimia force themselves to throw up (also called purging). When you purge, stomach acids travel up through your throat and wash over your teeth, similar to acid reflux. Over time and with frequent acts of purging, stomach acids can weaken the enamel on your teeth and wear it away.
  • Dry Mouth. The saliva that your mouth produces help wash away acids from what you eat and drink. If you do not make enough saliva, the acid can stay on your teeth for longer periods of time and give it more time to weaken your enamel.

Tooth erosion sodas

Tooth erosion acid reflux

Acidic Drinks Can Erode Your Teeth

When you sip on acidic drinks, the acid washes over your teeth and weakens your enamel. If you sip these drinks several times a day, your teeth are under constant threat from the acid and don’t have a chance to stay strong and protect against decay-causing bacteria.

Ways to Tell if You Have Tooth Erosion

The chewing surfaces of your teeth may become sensitive to hot and cold and even touch. This is because the enamel is no longer providing complete protection of the dentin. This can mean that you will be more sensitive to hot or cold and even to outside air.

Tooth erosion signs

Is your favorite drink harmful to your teeth?

A wide variety of popular beverages are highly acidic. Beverage types that are highly erosive start on the left on this graph. These are just a few of the types of drinks you may be enjoying every once in a while:

Tooth erosion chart

Wait at least 1 hour before you brush!

You may think you are doing the responsible thing by brushing your teeth right away after drinking your favorite beverage, but you actually may be doing more harm than good.

Acids can attack your enamel and soften it. Your saliva rinses acids away and helps your enamel to re-harden. If you brush before the enamel has time to re-harden then it can damage the enamel. Waiting an hour before brushing lowers the risk of harming your enamel.  

Tooth Erosion Harms Your Teeth and Overall Health

These are some of the common problems that are linked with tooth erosion:

  • Sensitive teeth
  • Decay and cavities
  • Infection
  • Abscess (puss-filled sac) can form
  • Tooth loss
  • Loss of confidence in the look of your smile

Eroded teeth

Managing Tooth Erosion

Once your teeth are eroded, there is no way to treat it. But, there are ways to manage it that can also help to prevent future erosion. What to do about your tooth erosion will depend on what is causing it to happen as well as your own personal health history.

Some of the most common ways to manage tooth erosion are:

  • Veneers — a thin but strong covering that’s placed over the front part of your tooth. It’s made to look like your natural tooth and can restore the look of your smile.
  • Tooth Restoration — If you have a cavity then you may need a filling. You may also need a crown if the cavity is larger than what a filling can restore.
  • Root Canal — If the nerves of your tooth are infected then you may need root canal therapy.
  • Tooth Removal — If the erosion is severe and your tooth can’t be restored, then it may need to be removed.

Tips to Prevent Tooth Erosion

  • Change your habits — sometimes, the only action that is recommended is to change your daily habits to help prevent your erosion from getting worse. Your dentist or hygienist can recommend what changes you should make.
  • Eat a healthy diet
    • Drink plain water or milk when you can.

    • Drink acid-containing beverages only once in a while.

      • Drink through a straw to lower your teeth’s exposure to the acids in your drink.
      • Rinse your mouth with plain water after you are finished with your drink.
    • Eat or drink sugary items with meals instead of on their own.
    • Chew sugarless gum or suck on sugarless mints/hard candies (that are not sour-flavored) after meals.

  • Look for oral health care products with the American Dental Association Seal of Acceptance. The ADA Seal in this category means that a product is both safe and effective in helping to prevent and reduce enamel erosion from dietary acids.
  • If you suffer from frequent heartburn or acid reflux, talk to your physician about ways you can get it under control.
  • If you suffer from dry mouth, talk to your dentist about options that can help bring you relief.




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