Lots of us enjoy a drink now and again – a glass of wine, a cold pint, or a favourite cocktail. But have you ever thought about how alcohol could be affecting your mouth?

The truth is, alcohol can cause quite a few problems for your teeth, gums, and overall oral health.

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How can alcohol affect my mouth?

Alcohol can affect your mouth in many ways – not just from one drink, but over time with regular use. Here’s what to look out for and how you can help protect your teeth and gums.

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Acid erosion

Most alcoholic drinks – especially wine, beer and spirits – are acidic. This acid can wear away the outer surface of your teeth (enamel), leading to:

• Sensitivity to hot and cold.
• Teeth looking darker (as the dentine underneath becomes exposed).
• A greater risk of tooth decay.

To limit enamel erosion:

• Rinse with water between drinks.
• Use a fluoride mouthwash (but not straight after brushing).
• Chew sugar-free gum for 20 minutes after drinking.
• Wait at least one hour before brushing your teeth.

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Sugar and tooth decay

Sweet-tasting drinks often contain high amounts of sugar – alcopops, cocktails, liqueurs, and sweet wines and beers are among the worst. Sugar feeds the bacteria in your mouth, which create acids that attack your teeth and lead to decay.

Reduce the damage by:

• Using a straw to keep sugary drinks away from your teeth.
• Drinking water between alcoholic drinks.
• Avoiding brushing for at least an hour after your last drink.
• Chewing sugar-free gum to boost saliva flow.

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Vomiting and enamel damage

Drinking too much alcohol can sometimes cause vomiting. Stomach acid is very strong and can seriously damage your enamel.

Do not brush your teeth straight after vomiting. Brushing at this point can scrub acid into the enamel, making the damage worse.

What to do instead:

• Rinse your mouth straight away with water or a fluoride mouthwash.
• Sip water to help wash away acid and prevent dry mouth.
• Chew sugar-free gum (with xylitol if possible) to help bring your mouth back to a healthy balance.
• Wait at least 30 to 60 minutes before brushing your teeth with fluoride toothpaste.

This gives your saliva time to help protect and strengthen the enamel again.

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Staining

Dark-coloured drinks can stain your teeth over time – especially red wine, dark beers, coffee-based liqueurs, brightly coloured cocktails and alco-pops.

To help prevent staining:

• Use a straw where possible.
• Try a whitening toothpaste to manage surface stains.
• If staining builds up, book a professional clean with a dental hygienist (note: stain removal is usually a private treatment and not NHS-funded).

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Dry mouth

Alcohol is a diuretic – it makes you lose more water, which can dry out your mouth. This reduces your saliva flow, which plays a vital role in protecting your mouth.

A dry mouth can cause:

• Bad breath.
• Dry, cracked lips.
• Loss of taste.
• Oral thrush.
• A higher risk of tooth decay and gum disease.

To stay hydrated, alternate alcoholic drinks with plain water and consider chewing sugar-free gum to help stimulate saliva.

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Can alcohol cause mouth cancer?

Yes.

Drinking too much alcohol increases your risk of developing mouth cancer. Alcohol is linked to around one-in-three mouth cancer cases.

Watch out for these signs:

• A mouth ulcer that hasn’t healed in 3 weeks.
• Red or white patches in your mouth.
• A persistent hoarse voice.
• Lumps or swellings in your face, cheek, or under your jaw.
• Trouble moving your tongue.

If you have any of these symptoms for more than 3 weeks, see your dentist or doctor.

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How much is too much?

There’s no completely safe level of drinking, but the NHS recommends:

• No more than 14 units of alcohol a week.

• Spread your drinking over 3 or more days if you regularly drink as much as 14 units a week.

That’s about:

• 6 medium (175ml) glasses of wine.
• Or 6 pints of 4% beer.

If you want to cut down, try having several drink-free days each week.

Cutting down how often – and how much – you drink can make a big difference to your health, including your oral health.

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Alcohol dependency

If you are dependent on alcohol, stopping suddenly can be dangerous.

Speak to your doctor if you notice:

• Shaking or tremors.
• Seizures.
• Sweating.
• Hallucinations.
• Depression or anxiety.
• Trouble sleeping.

They can help you quit safely and get the right support.

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For more help or advice, speak to your dental team.

They can check your mouth and give you tips on how to look after your oral health – especially if you drink alcohol regularly.

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