--- title: "Tooth erosion: the acid wear that won't grow back" description: "Tooth erosion is enamel dissolved by acid, not bacteria, and an NIH report calls it irreversible. Where the acid comes from, the signs, and who to see." canonical: https://oralbench.com/tooth-erosion alternate_html: https://oralbench.com/tooth-erosion language: en-US last_updated: 2026-09-27 type: guia --- # Tooth erosion: where the acid comes from and what to do next 1. [Home](https://oralbench.com/) 2. [Mouth & gums](https://oralbench.com/oral-health) 3. Tooth erosion: where the acid comes from and what to do next Erosion isn't a cavity. It's acid from a drink, from reflux or from vomiting dissolving the surface of your teeth, with no bacteria involved. By **OralBench editorial team**Updated September 27, 2026 ![Tooth erosion: where the acid comes from and what to do next](https://oralbench.com/img/guia-tooth-erosion-640.webp) Short answer Tooth erosion is the loss of tooth surface to acid that doesn't come from mouth bacteria. The NIH's 2021 report "Oral Health in America" defines dental erosion as "the irreversible, acid-induced loss of dental hard tissues," and names two kinds of source: acid you take in (juice, soda, sports drinks, fresh fruit, sour candies, even chlorinated pool water) and stomach acid from reflux or repeated vomiting. In children it's mostly diet, while in adults, the report says, erosion "more often is associated with gastroesophageal reflux disease (GERD)." Since the lost tissue doesn't come back, the useful moves are finding the acid source, cutting it down and having a dentist look, with a doctor involved when reflux or vomiting is behind it. ## Erosion and decay are different problems Both involve acid, which is why they get mixed up. In tooth decay, bacteria in plaque turn sugar into the acid, a process our tooth decay guide walks through. Erosion skips the bacteria. The NIH report describes it as acid-induced loss "not involving the bacterial-secreted acids associated with dental caries," so the acid reaches your teeth straight from what you eat and drink, or from your stomach. What it wears away first is enamel, which MedlinePlus, the National Library of Medicine's health site, calls "your tooth's hard surface." Under it sits dentin, "the hard yellow part under the enamel." Erosion is also only one of two ways teeth wear down. The other is abrasion, which the same report ties to tooth grinding, to "frequent use of highly abrasive oral care products" and to a diet high in abrasive foods. A lot of this is still unsettled. Understanding of how to prevent and manage erosion in children "remains incomplete," the report says, and "there is concern that erosive tooth wear is increasing among children and adolescents." ## Where the acid comes from The NIH report sorts the causes into acid from outside the body and acid from inside it. Source What the report names What else the sources say Drinks Juice, soda and sports drinks "Carbonated beverage consumption, particularly in the evening, has been linked to erosion" Food and candy Fresh fruit and sour candies In children, diet is the most common cause, per the report Pool water "hypochlorous acid from chlorine used in swimming pools" Listed with the outside sources for children and teens Reflux (GERD) Stomach acid coming back up In adults, erosion "more often is associated with" GERD than with diet Repeated vomiting Bulimia nervosa and other eating disorders MedlinePlus: the worn enamel is "caused by the exposure to stomach acid every time you throw up" From NIH, "Oral Health in America: Advances and Challenges" (2021), sections on children, adolescents and working-age adults, and the MedlinePlus health topic "Eating Disorders". Both read on September 27, 2026. ## How erosion tends to show up ### Flattened chewing surfaces In children, the report says erosion usually starts on the cusp tips of the first baby molars and "then progresses to encompass the entire occlusal surface," the chewing surface. Severe wear there is one reason a dentist may suspect reflux. ### The inside of the upper front teeth Enamel lost on the tongue side of the upper front teeth is the pattern the report links to bulimia nervosa. ### Teeth that get touchy MedlinePlus lists "increasingly sensitive and decaying teeth" next to worn enamel among the effects of bulimia nervosa. ### Teeth that look worn down "Worn-down teeth" is one of the common symptoms on MedlinePlus's tooth disorders page. Acid is one route there; grinding is another. ## What three product labels leave open Two products we've reviewed list malic acid in a tablet that stays in your mouth, and ProDentim's page says it "helps maintain tooth whiteness." No source we read measures whether a chewable with malic acid affects enamel, and ProDentim gives no amount, so there's nothing here to weigh either way. The third row is about abrasion, the other kind of wear. Product How you use it What the page or label shows What you can't tell ProDentim Chew one tablet slowly every morning Malic acid in a blend of four ingredients, which the page says "helps maintain tooth whiteness" How much malic acid a tablet holds: the blend gives no amounts GumAktiv A tablet you let dissolve in your mouth The page lists malic acid; the label pictured on the same page does not Which of the two is right FortBite A powder you brush with twice a day instead of toothpaste Bentonite clay, kaolin clay and calcium carbonate among its ingredients, with no abrasiveness rating How abrasive it is From each seller's page and label, read on September 25, 2026, for our reviews. NIH, "Oral Health in America" (2021), read on September 27, 2026. ## When the acid comes from your stomach Reflux is the usual suspect in adults. MedlinePlus says occasional reflux is common, but symptoms "two or more times a week" may mean GERD, and heartburn isn't always part of it: another sign is tasting acid or food in the back of your mouth. Pregnancy and smoking both make GERD more likely, according to the same page. It also says: "Get medical help right away if you have chest pain with shortness of breath, or pain in your jaw or arm. These can be signs of a heart problem." The NIH report gives a reason to bring a doctor in, not just a dentist. Citing a 1999 study, it puts the later risk of esophageal adenocarcinoma, a cancer of the food pipe, at about 43 times higher in people with untreated GERD. For teens whose chronic GERD comes from a systemic illness, it says "collaboration between medical and dental providers can facilitate an oral health care plan that addresses erosive factors." Vomiting is the other route. When erosion comes from self-induced vomiting, the report says care "may require psychiatric intervention as well as tooth repair." On eating disorders, MedlinePlus says "it is important to seek help if you or a loved one thinks that you might have a problem." For morning sickness, the CDC's tip for pregnant women who vomit is a rinse: "mix 1 teaspoon of baking soda with a glass of water, swish, and then spit it out." According to the CDC, it "helps wash stomach acid away and keeps the outer part of your tooth (enamel) safe." Our guide to gums during pregnancy has the rest of that advice. ## What a dentist can do, and where the evidence runs thin A dentist can repair worn areas. Writing about children, the report says US dentists are "incentivized to restore rather than monitor nonsensitive dental-erosive lesions for progression," even though watching a lesion over time is part of managing the acid behind it. For tooth wear in adults, it adds that "there is little evidence to support clinical decision making on when to intervene." So two fair questions at the appointment are whether a worn spot needs repair now or just watching, and what's causing it. The report also flags a gap on the prevention side: parents often don't know about "the potential irreversible loss of tooth structure from consuming acidic beverages, foods, and candies." None of the supplement pages we've read shows enamel being put back, and our remineralization guide goes through their enamel claims one by one. ## Frequently asked questions **What causes tooth erosion?** Acid that doesn't come from mouth bacteria. The NIH report lists juice, soda, sports drinks, fresh fruit, sour candies and chlorinated pool water on the outside, and reflux or repeated vomiting on the inside. **Can tooth enamel grow back after erosion?** No. The NIH report calls dental erosion an irreversible loss of tooth tissue. A dentist can repair damaged areas, and cutting down the acid is how you limit further loss. **What is the treatment for tooth erosion?** There isn't a single one. A dentist can repair worn areas. For teens whose erosion comes from chronic GERD tied to another illness, the NIH report describes medical and dental providers planning care together, and for erosion from self-induced vomiting it says psychiatric care may be needed as well as tooth repair. For adults' tooth wear, the same report says there's little evidence on when to intervene. **Is tooth erosion the same as a cavity?** No. A cavity comes from acid made by plaque bacteria. Erosion comes from acid in food, drink or the stomach, with no bacteria involved. **Can acid reflux damage your teeth?** Yes. The NIH report says erosion in adults is more often associated with GERD than with diet. If you have reflux symptoms two or more times a week, MedlinePlus says it may be GERD, which is worth raising with a doctor. **Do any tooth supplements protect enamel from acid?** None of the ones we've reviewed shows that. ProDentim lists malic acid in a chewable tablet, but no source we read measures whether a chewable with malic acid affects enamel, and ProDentim gives no amount. ## Related pages Guides ### [Can a supplement remineralize your teeth? What the labels show](https://oralbench.com/remineralize-teeth) Remineralization is enamel taking back the minerals that acids pull out of it. Read more Mouth & gums ### [Tooth decay, from white spot to cavity](https://oralbench.com/tooth-decay) By the time there's a hole in your tooth, decay has been at work for a while. Read more Mouth & gums ### [Sensitive teeth: a warning sign worth taking to the dentist](https://oralbench.com/tooth-sensitivity) Tooth sensitivity is a symptom, not a diagnosis. Read more Mouth & gums ### [Gums during pregnancy: why they bleed, and what to do about it](https://oralbench.com/gums-during-pregnancy) Bleeding or swollen gums in pregnancy are usually gingivitis, the early stage of gum disease. Read more Updated September 27, 2026. [See our full method](https://oralbench.com/how-we-choose) --- ## OralBench - OralBench, published by Grupo Marfre Automação e Tecnologia (Contagem, Brazil) - Email: contact@oralbench.com - Home: https://oralbench.com/ - llms.txt: https://oralbench.com/llms.txt · llms-full.txt: https://oralbench.com/llms-full.txt · sitemap: https://oralbench.com/sitemap.xml