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Tooth Erosion in Singapore: Acid Wear & How to Stop It

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Written & reviewed by the BestDoctors.sg editorial team · Last updated 24 Aug 2026 · General information, not medical advice

Tooth erosion is the gradual, irreversible loss of the tooth’s hard outer enamel (and later the softer dentine beneath) caused by acid dissolving the surface. It is different from tooth decay: decay comes from mouth bacteria making acid from sugars, whereas erosion comes from acids reaching the tooth from the diet or the stomach, and can happen even with good oral hygiene. Enamel does not grow back once lost, so the goal is to stop erosion early and protect what remains.

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In a medical emergency, or for severe or sudden symptoms such as breathing difficulty, chest pain, fainting or stroke signs, call 995 immediately.

Heartburn, an acid taste or regurgitation may mean reflux is eroding your teeth — see a doctor, as the reflux itself needs treatment. Any pattern of self-induced vomiting deserves compassionate medical support, not just dental care.

How it develops

Each time a tooth is exposed to acid, its surface softens temporarily. Brushing or grinding while the surface is soft accelerates the wear, so erosion is cumulative and permanent. Because saliva neutralises acid and helps re-harden the surface, anything that reduces saliva raises the risk.

Common causes

Dietary acids are the most common cause — frequent or prolonged contact with fizzy drinks (including sugar-free and sparkling versions), fruit juices, citrus fruits, sports and energy drinks, wine and vinegary foods; sipping slowly, swishing or holding acidic drinks in the mouth increases exposure. Acid reflux (GORD), including “silent” reflux, can erode the inner surfaces of teeth, and recurrent vomiting — from an eating disorder, pregnancy sickness or other causes — exposes teeth to highly erosive stomach acid. Dry mouth from medicines or conditions, aggressive brushing, and tooth grinding all add to the wear.

Signs

Erosion often shows as sensitivity to cold, hot, sweet or acidic things; teeth looking more yellow as the darker dentine shows through thinned enamel, or looking shiny and “glassy”; front-tooth edges appearing thin, translucent or chipped; small dents or cupping on biting surfaces; teeth appearing shorter; or fillings that seem to stand higher than the worn tooth around them. Advanced erosion can cause pain, cracking or exposure near the nerve.

Red flags

Signs pointing to underlying reflux — heartburn, an acid taste, regurgitation or a chronic cough — mean the reflux needs medical treatment, not just attention to the teeth. Any pattern of self-induced vomiting or a suspected eating disorder needs compassionate medical and mental-health support, and a GP can help and refer. Severe or rapidly worsening sensitivity, pain or visibly fast tooth wear should be seen by a dentist promptly, and persistent dry mouth is worth reviewing as it may be medication-related. Any tooth pain with facial swelling or fever is a dental emergency; call 995 for a life-threatening one.

How dentists assess and treat it

A dentist looks for the characteristic pattern and location of wear, checks sensitivity, and often takes photographs, moulds or scans to monitor whether erosion is progressing, alongside a history covering diet, drinks, reflux symptoms, medicines, dry mouth and grinding. Treatment starts with reducing acid exposure: cutting the frequency (not just the amount) of acidic drinks and foods, keeping them to mealtimes, using a straw, and following acids with water or milk rather than sipping and swishing. A key rule is not to brush immediately after acidic food or drink or after vomiting — the softened surface is vulnerable, so rinse with water or a fluoride mouthwash and wait about an hour first (and after vomiting, rinse rather than brush). A fluoride toothpaste, a soft brush and gentle technique help, and a dentist may recommend a higher-fluoride toothpaste, fluoride varnish or a desensitising product. Treating the underlying cause — managing reflux medically or getting support for an eating disorder — is essential, and moderate-to-severe wear may need protective or restorative dentistry such as bonding, veneers or crowns, plus a night guard if grinding is a factor.

Protecting your teeth

Prevention is about controlling how often teeth meet acid and giving them time to recover. Choose plain water or milk for everyday sipping, keep acidic drinks to mealtimes and finish them reasonably quickly rather than nursing them for hours, and rinse with water afterwards. Stimulating saliva helps — staying hydrated and chewing sugar-free gum after meals both encourage the natural buffering and repair that saliva provides. Wait before brushing after anything acidic, use a fluoride toothpaste twice daily with a soft brush, and avoid scrubbing hard. If you have reflux or dry mouth, addressing the cause protects your teeth as well as your comfort, and regular dental check-ups catch early wear before it becomes severe. It also helps to notice hidden acid sources: sipping citrus water through the day, grazing on dried fruit, or frequent sports and energy drinks during exercise all expose teeth to repeated acid attacks, so grouping them with meals and rinsing with plain water afterwards makes a real difference over the years, protecting the enamel you cannot get back and keeping sensitivity in check. A dentist can advise on the best fluoride products for you and monitor whether the wear is stable or still progressing over time.

When to see a dentist

See a dentist if you notice increasing sensitivity or changes in the colour or shape of your teeth, or if you have frequent acidic drinks, reflux or dry mouth — and attend routine check-ups so early wear is caught and controlled.

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Sources

General information only. This guide is general information about an oral-health topic and is not a diagnosis or personalised dental advice. See a dentist or doctor for assessment and treatment. Any mouth ulcer, lump, or white or red patch that has not healed in about 2–3 weeks should be checked to exclude oral cancer. A spreading dental infection — facial swelling with fever, difficulty swallowing, or difficulty opening the mouth — needs urgent dental or medical care; call 995 if swelling affects breathing or swallowing.

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Frequently asked questions

Is tooth erosion the same as cavities?

No. Cavities are caused by bacteria in plaque turning sugar into acid, while erosion is caused by acid from your diet or stomach dissolving the whole surface of the tooth. You can have erosion even with good brushing, and the two can occur together.

Is sparkling water bad for my teeth?

Sparkling and flavoured waters are mildly acidic, so they are gentler than soft drinks but not completely “safe” if sipped all day. Drinking them with meals and choosing plain water for everyday sipping lowers the risk.

Should I brush straight after being sick or drinking something acidic?

No — the tooth surface is temporarily softened, so brushing can wear it away faster. Rinse with plain water (or a fluoride mouthwash) and wait about an hour before brushing.

Can worn enamel grow back?

Enamel cannot regrow once it is lost. Fluoride and saliva can re-harden a softened surface and prevent further loss, and a dentist can rebuild badly worn teeth with fillings, veneers or crowns.

Could my heartburn be damaging my teeth?

Yes — stomach acid from reflux can erode teeth, sometimes with few other symptoms. If a dentist sees this pattern, it is worth seeing a doctor, because treating the reflux protects both your teeth and your gut.