Acid Erosion: How Diet, Reflux and Everyday Habits Affect Tooth Enamel

Acid erosion wears away tooth mineral through acid exposure that is separate from bacterial tooth decay. Diet, reflux, vomiting and everyday habits can contribute, sometimes alongside physical wear. Treatment starts by identifying the causes; rebuilding a tooth alone cannot stop continuing exposure.

Recognising erosive tooth wear

Changes can include smoother or cupped surfaces, thinning edges, sensitivity and altered tooth shape. Examination considers the pattern across teeth, photographs, wear monitoring and possible coexisting grinding or abrasion. You may notice shorter front teeth while the greatest tissue loss is on other surfaces.

Where the acid comes from

Frequent acidic drinks, certain foods and intrinsic acid associated with reflux or vomiting can contribute. Frequency, contact time, sipping habits and saliva influence exposure. This is different from bacterial caries caused by sugar metabolism, so prevention should distinguish the two processes rather than treating all tooth damage as one condition.

Dietary prevention without unnecessary restriction

Reduce repeated acid exposure and consider having acidic drinks with meals rather than sipping them continually. Water and other appropriate neutral choices may help between meals. Following an acid episode, avoid immediate vigorous brushing; individual fluoride and oral-hygiene advice should be obtained. Do not stop prescribed medicines or self-diagnose reflux on the basis of tooth appearance.

When medical assessment is relevant

Erosion patterns and reported heartburn, regurgitation or recurrent vomiting may warrant a discussion with the GP or an appropriate clinician. A dental team can identify oral consequences but should not claim to diagnose or treat the full underlying medical condition. Protecting dental surfaces and managing the source of acid can require parallel care.

Restoration depends on severity

Early changes may be monitored with preventive advice; more substantial tissue loss or functional problems can require composite, onlays or coordinated rehabilitation. Rebuilding teeth without controlling repeated acid exposure can compromise restorations and produce further wear. Materials and occlusion need planning when several teeth are affected.

What to ask at review

At review, understand which types of wear are present, which habits or medical factors may contribute and how progression will be monitored. The plan should explain whether prevention, sensitivity relief or rebuilding function is the immediate aim and how the stages fit together.

Acid exposure and bacterial decay are different processes

Erosion comes from acid outside the decay process, including drinks or stomach acid. Tooth decay develops when plaque bacteria turn sugars and other fermentable carbohydrates into acid. Both can occur together and add to sensitivity or tissue loss. Knowing which is present helps target prevention instead of relying on a filling to stop the cause.

A dietary review looks at drink frequency, prolonged sipping and brushing after acid exposure, then finds ways to reduce repeated episodes without compromising nutrition. Ongoing heartburn, unexplained acid regurgitation or vomiting needs appropriate medical assessment alongside dental care. Higher-fluoride prevention may suit some people, with the recommendation based on individual risk.

Restoration is considered when function, sensitivity or structural integrity require it. Monitoring photographs and study models can help distinguish active progression from old stable wear. The most conservative option may be stabilising the cause before placing composite or crowns.

A dietary diary can reveal repeated acid exposure

Two people may drink similar volumes of acidic beverages but expose their teeth differently. Someone who sips a drink over several hours creates repeated challenges to the tooth surface, whereas drinking with a meal and then returning to water changes the pattern. Reflux and vomiting can expose different tooth surfaces to acid and should prompt appropriate medical discussion if persistent. The dentist may record wear patterns and photographs to identify progression.

Sources and professional guidance

• NHS — looking after teeth and gums
• UK Government — Delivering Better Oral Health evidence-based toolkit

Applying the information:

Treatment options · Our practices · Fees and finance