Dental Erosion

Overview

Dental erosion is the gradual wearing away of the hard outer layer of your teeth (called enamel) by acid. It is not the same as tooth decay, which is caused by bacteria feeding on sugar. With erosion, acid — from food and drinks you swallow, or from stomach acid coming up into your mouth — dissolves the surface of the tooth. Enamel does not grow back once it is lost, so the aim is to stop the acid attack and protect what is left. Erosion often happens slowly over years, and many people only notice it when their teeth become sensitive or start to look different.

Yes, it is common. Studies across many countries suggest that signs of erosion can be found in roughly 1 in 3 adults and a similar or higher share of teenagers and children. Mild erosion is often picked up by a dentist before a person notices anything themselves.

It can affect anyone at any age. It is often seen in people who drink a lot of soft drinks, sports drinks or fruit juice, people with reflux (stomach acid coming up), people who vomit frequently, people with a dry mouth, and people whose jobs involve exposure to acid fumes. Children and teenagers are often affected because they tend to drink more sugary and fizzy drinks, and older adults are often affected because of reflux, dry mouth from medicines, or many years of accumulated acid exposure.

Symptoms

Common symptoms

• Sensitivity to hot, cold, sweet or sour foods and drinks
• Teeth looking more yellow as the whiter outer enamel thins
• Front teeth looking slightly see-through or greyish at the edges
• The edges of teeth looking rounded, chipped or shorter than they used to be
• Small dents or 'cupping' on the chewing surfaces of back teeth
• Fillings or crowns starting to look raised or 'standing proud' as the tooth around them wears away
• A smooth, shiny, glassy look to the tooth surface
• Noticing these changes gradually over months or years rather than suddenly

Symptoms in children

• Complaining that cold drinks or ice cream 'hurt'
• Being fussy about hot or cold foods
• Thinning or see-through tips on the upper front teeth
• Dents on the chewing surfaces of milk teeth or new adult teeth
• Often linked to frequent juice, squash or fizzy drinks, or to reflux and spitting up
• Children may not notice anything at all — a dentist often spots it first

Symptoms in older adults

• More sensitivity as the softer layer under the enamel (dentine) becomes exposed
• Fillings, crowns and bridges looking raised as the surrounding tooth wears
• A dry mouth, often from medicines, which reduces the protective effect of saliva
• Reflux or stomach problems contributing acid over many years
• Teeth looking shorter, darker or more uneven
• Difficulty eating very cold or acidic foods

Causes

Main causes

• Acidic drinks — fizzy drinks (including sugar-free ones), sports and energy drinks, fruit juice, squash and flavoured water
• Acidic foods — citrus fruit, vinegar, pickles, tomato-based sauces, some salad dressings
• Stomach acid reaching the mouth — reflux (heartburn), hiatus hernia, pregnancy-related reflux, or repeated vomiting
• Vomiting linked to an eating disorder such as bulimia
• A dry mouth (low saliva), which normally neutralises acid and washes it away
• Brushing too hard or too soon after acid has softened the enamel
• Grinding or clenching the teeth, which adds wear on top of erosion
• Workplace exposure to acid fumes or acidic dust

Risk factors

• Sipping acidic drinks slowly throughout the day rather than with meals
• Swishing or holding acidic drinks in your mouth before swallowing
• Frequent vomiting, including from morning sickness, illness or an eating disorder
• Long-standing heartburn or reflux that has not been checked
• Taking medicines that reduce saliva, or medical conditions that cause dry mouth
• Swimming regularly in poorly maintained chlorinated pools, where the water can be acidic
• A diet high in citrus, vinegar or tomato-based foods
• Wearing a night guard or brace that traps acid against the teeth
• Having already had erosion — thin enamel is more easily damaged further

When to see a doctor

See a doctor urgently if:

• Face or jaw swelling, fever, or feeling generally unwell with tooth pain
• Difficulty swallowing or breathing
• Severe pain that pain relief does not help
• A tooth has been knocked out or badly broken
• Bleeding from the mouth that will not stop

Book a routine appointment if:

• Teeth feel sensitive to hot, cold or sweet foods
• You notice your teeth look more yellow, see-through at the edges, or shorter
• A filling or crown feels like it is sticking up above the tooth
• You have regular heartburn, reflux, or a sour taste in your mouth in the morning
• You have been vomiting often and are worried about your teeth
• Your mouth feels dry most of the time
• You are not sure whether your symptoms are erosion, decay or wear from grinding

Diagnosis

A dentist usually diagnoses dental erosion by talking with you about your diet, heartburn, vomiting and brushing habits, then looking closely at your teeth. They may dry the teeth with air so the surface is easier to see, and compare worn areas with what a normal tooth shape should look like. Sometimes they take photographs so they can compare changes over time. They may also ask about your general health and medicines, and may suggest you see your doctor if reflux or an eating disorder could be part of the picture.

Tests that may be done

• A dental examination looking at tooth shape, shine, colour and how much dentine is showing
• Clinical photographs to track changes over time
• A diet and lifestyle discussion, including how often and how you drink acidic drinks
• Questions about heartburn, reflux, vomiting and medicines
• Checking how well saliva flows and whether your mouth is dry
• X-rays if your dentist needs to check for decay or look at the health of the tooth root
• An assessment of your bite and whether grinding is adding to the wear

What to expect at your appointment

The appointment is quick and painless. Your dentist will explain what they can see, whether it looks like erosion or something else, and how mild or advanced it is. You may be given advice on diet and brushing, a fluoride treatment, or a plan to review the teeth in a few months. If they suspect a medical cause such as reflux, they will suggest you speak to your doctor.

Treatment

There is no way to regrow enamel, so treatment has two goals: stop the acid that is causing the damage, and protect and repair the teeth that have already been affected. For most people this means practical diet and brushing changes, steps to reduce acid from the stomach, and dental care to reduce sensitivity and rebuild worn areas if needed. Mild erosion is usually managed with advice and monitoring; more advanced erosion may need fillings, bonding or crowns.

Self-care at home

• Cut down on how often you have acidic drinks and foods — it is the number of acid attacks per day that matters most, not just the amount
• Drink acidic drinks quickly with a meal rather than sipping them all day
• Use a straw for fizzy drinks and juice to keep acid away from your teeth
• Finish a meal with a small piece of cheese, milk or plain water to help neutralise acid
• Rinse your mouth with plain water after acidic food or drink, then wait about 30 to 60 minutes before brushing
• Chew sugar-free gum after meals to boost saliva, if your dentist is happy for you to
• Brush twice a day with a fluoride toothpaste, using a soft or medium brush and gentle pressure
• Do not brush hard or scrub at the gum line
• If you have reflux, avoid late meals, large meals and trigger foods, and raise the head of your bed if your doctor advises it
• Keep up regular dental check-ups so changes are caught early

Medical treatments

Your dentist may apply a fluoride varnish or a desensitising product to strengthen the surface and reduce sensitivity. Small worn areas can be rebuilt with tooth-coloured filling material or bonding, and more extensive wear may be restored with crowns or veneers. Your dentist may also make a custom guard if grinding is adding to the wear. If acid from the stomach is a cause, your doctor can assess and treat reflux or vomiting — getting that under control is often the single most important step. Any medicine decisions are made by your doctor or dentist, who will consider your full health picture.

When is surgery considered?

Surgery is not usually needed for dental erosion. In advanced cases, a dentist with a special interest in restorative or prosthetic dentistry may rebuild severely worn teeth, sometimes in several stages over months. Occasionally, jaw surgery is considered when erosion and grinding have changed the bite badly, but this is uncommon and only after careful specialist assessment.

Living with this condition

Living with dental erosion is mostly about small daily habits rather than big sacrifices. Many people find it helpful to swap one or two acidic drinks for water, to stop sipping fizzy drinks over long periods, and to build a simple routine of rinsing with water and waiting before brushing. Sensitivity often settles once the acid is reduced and your dentist has protected the exposed surfaces. Keep a note of what triggers discomfort so you can talk it through at your next check-up.

Lifestyle tips

• Keep water as your main drink between meals
• Choose sugar-free, non-acidic options such as plain milk or water when you are thirsty
• Avoid swishing drinks around your mouth or holding them on your front teeth
• If you swim regularly, ask about the pH of the pool water
• If you grind your teeth, ask your dentist about a night guard
• Avoid brushing immediately after vomiting — rinse with water first and brush later
• Keep up with dental appointments, even when nothing hurts
• If you use recreational drugs that cause dry mouth or vomiting, seek confidential support

Diet and exercise

Eat regular meals and limit acidic snacks and drinks to mealtimes. Cheese, plain yoghurt, milk and nuts are gentler on teeth than citrus or vinegar-heavy snacks. Fibre-rich foods such as vegetables and wholegrains help stimulate saliva. Exercise is good for your general health and does not harm your teeth, but sports drinks are often acidic and sugary — plain water is better for most workouts. If you exercise hard and get a dry mouth, sip water often and chew sugar-free gum afterwards.

Mental health and emotional wellbeing

Changes to your teeth can affect how you feel about your smile, and sensitivity can make eating out or social meals less enjoyable. If erosion is linked to reflux, vomiting or an eating disorder, the emotional side can be significant, and it is important to say so. These are health issues, not personal failings, and help is available. If you are struggling with your mental health, please reach out to a trusted doctor, a local mental health service, or a crisis line in your country — and if you feel at risk of harming yourself, contact your local emergency number straight away.

Prevention

Largely, yes. You cannot undo erosion that has already happened, but you can almost always reduce the risk of more. The key is to limit how often your teeth meet acid, keep saliva flowing, and avoid brushing while enamel is soft. Small, consistent changes work better than strict short-term ones.

Screening programmes

There is no national screening programme for dental erosion. Instead, routine dental check-ups are the practical way it gets spotted — your dentist can see early changes before you feel anything. How often you need a check-up depends on your risk, and your dentist will suggest a schedule. If you have long-standing reflux, frequent vomiting, a dry mouth or a very acidic diet, mention it at your appointment so your teeth can be watched more closely.

Complications

If left untreated

• Thinning enamel and increasing sensitivity to hot, cold and sweet foods
• Exposed dentine, which is softer and wears faster once uncovered
• Teeth looking shorter, darker or uneven, which can affect confidence
• Chips and cracks in weakened teeth
• Fillings and crowns standing proud, sometimes needing replacement
• In severe cases, exposure of the nerve inside the tooth, leading to pain or infection
• Changes to the bite, which can cause jaw discomfort
• More complex and costly dental treatment later

Long-term outlook

The outlook is good for most people. Erosion is usually slow, and once the acid source is reduced, damage often stabilises. Many people manage well with simple diet changes, good brushing habits, fluoride protection and regular check-ups. If wear is already advanced, modern dentistry can rebuild teeth very effectively. The earlier it is found, the simpler and cheaper the fix — which is why regular dental visits matter.

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