By Dr Elizabeth Crake
Deadlines, late-night revision and early lectures, for many students an energy drink feels like the obvious fix. But while a can might sharpen your focus for an hour, the impact on your teeth can last a great deal longer. At our Wimbledon practice we see a steady stream of young patients with enamel erosion and decay linked to fizzy and energy drinks, and almost all of it is avoidable. Here's what these drinks actually do to your teeth, and how to keep enjoying student life without paying for it later.
Why energy drinks are a double threat
Energy drinks damage teeth in two distinct ways, which is what makes them especially harsh on a young smile.
- Acid erosion. Most energy drinks are strongly acidic. Every mouthful lowers the pH in your mouth and softens the surface of your enamel, the hard, protective outer layer of your teeth. Enamel does not grow back, so once it is worn away it is gone for good.
- Sugar and decay. A single can can contain a large share of the maximum daily free sugar the NHS recommends for an adult. Sugar feeds the bacteria in plaque, which produce yet more acid and drive tooth decay.
Combine the two and you have a drink that simultaneously dissolves enamel and feeds the bugs that cause cavities. It is little wonder the NHS lists fizzy and energy drinks among the worst things for your teeth.
The "sipping" problem
It is not just what you drink, it is how. Nursing a can slowly through a three-hour study session keeps your mouth in an acidic state almost continuously, never giving your saliva the chance to neutralise the acid and let enamel recover. The same goes for cracking open several cans across a night of revision. Frequency matters more than quantity: ten sips spread over an evening do more harm than the same drink finished in one go.
| Drink | Typically acidic? | Typically high in sugar? | Kinder choice for teeth |
|---|---|---|---|
| Standard energy drink | Yes | Yes | Avoid / occasional only |
| Sugar-free energy drink | Yes | No | Better, but still erosive |
| Fizzy soft drink | Yes | Often | Limit to mealtimes |
| Fruit juice / smoothie | Yes | Yes | Mealtimes, max 150ml/day |
| Milk | No | No (lactose only) | Tooth-friendly |
| Plain water | No | No | Best choice |
Guidance reflects general NHS and Oral Health Foundation advice on sugary and acidic drinks; individual products vary, so always check the label.
Heading to college or commuting into central London? The long train and Northern line journeys from Wimbledon station are exactly when a grab-and-go energy drink is most tempting. Keep a refillable water bottle in your bag instead, and save sugary or fizzy drinks for mealtimes. If you revise in Wimbledon Village or near the Common, a quick walk and some fresh air beats a caffeine spike, and it is far kinder to your enamel.
The warning signs to watch for
Enamel erosion is gradual and often painless at first, so it is easy to miss. Keep an eye out for:
- Sensitivity to hot, cold or sweet things
- Teeth looking more yellow as thinning enamel reveals the darker dentine beneath
- Edges that look thin, rough or slightly transparent
- Small dents or smooth, shiny patches on the biting surfaces
If any of these sound familiar, it is worth a check-up. Caught early, erosion and decay can be managed before they need fillings, crowns or root canal treatment.
Worried about your enamel? Get a quick check-up in Wimbledon
Our team at The Dental Lounges Wimbledon, including general dentist Dr Elizabeth Crake, can spot early erosion and help you protect your smile. Flexible appointments around lectures and work.
Book an appointment See general dentistryHow to protect your teeth without giving up everything
You do not have to live like a monk to keep your teeth healthy through exams. A few simple habits make a real difference:
- Swap where you can. Water and milk are the safest choices between meals. If you need caffeine, plain tea or coffee is far less acidic than an energy drink.
- Don't sip slowly. If you are going to have an energy drink, finish it in one sitting rather than nursing it for hours.
- Use a straw to help the liquid bypass your front teeth.
- Rinse with water afterwards to wash away acid and sugar.
- Wait before brushing. The NHS advises waiting about an hour after acidic drinks before brushing, as enamel is temporarily softened.
- Brush twice a day with a fluoride toothpaste, and spit, don't rinse, to keep the fluoride working.
- Keep up your check-ups and hygiene visits. A professional hygienist clean removes plaque you can't reach and lets us catch problems early.
What dental care costs as a student in Wimbledon
Looking after your teeth need not be expensive, and prevention is always cheaper than repair. If you are under 18 you may still qualify for free NHS dental care, and students on a low income may be able to claim help through the NHS Low Income Scheme. For private appointments at our Wimbledon Village practice, our real, transparent prices are below.
| Appointment | Price |
|---|---|
| New patient check-up (inc. 2 X-rays & oral cancer screening) | Contact us for current fees |
| Regular patient check-up (X-rays extra) | £80 |
| Standard hygiene clean | £90 |
| Premium Airflow clean | £120 |
| Composite (tooth-coloured) filling | £150–£350 |
| Denplan monthly membership (inc. 2 exams + 2 hygienes) | contact us for current pricing |
Prices are confirmed at your appointment. For the full list, see our general dentistry in Wimbledon page, or get in touch via our contact page. You can also explore all our treatments from the home page.
Frequently asked questions
Yes. Most energy drinks are both highly acidic and high in free sugars, a combination that erodes tooth enamel and feeds the bacteria that cause decay. The NHS lists fizzy and energy drinks among the worst for teeth, and recommends keeping sugary, acidic drinks to mealtimes only.
Sugar-free versions remove the decay risk from sugar, but they are still acidic, so they can still soften and erode enamel over time. Drinking them quickly rather than sipping for hours, and rinsing with water afterwards, helps reduce the acid contact on your teeth.
No. Acidic drinks temporarily soften enamel, so brushing immediately can wear it away. The NHS advises waiting about an hour before brushing after acidic food or drink. Rinse with plain water in the meantime, and brush twice daily with a fluoride toothpaste.
