Mouth ulcers concerns

Mouth ulcers are painful sores that appear in the mouth, usually on the soft tissue - cheeks, lips or tongue. They can be white, red, yellow or grey in colour and swollen.

Although they're uncomfortable, mouth ulcers are usually harmless and clear up by themselves within a week or two.

In many cases, the reason for mouth ulcers is unclear, but triggers are thought to include:

  • Accidentally biting the inside of your cheek or a sharp tooth
  • Poorly fitting dentures
  • Hard food
  • A defective filling
  • Stress and anxiety
  • Hormonal changes – some women develop mouth ulcers during their monthly period
  • Eating certain foods – such as chocolate, spicy foods, coffee, peanuts, almonds, strawberries, cheese, tomatoes and wheat flour
  • Toothpaste containing sodium lauryl sulphate
  • Stopping smoking – when you first stop smoking, you may develop mouth ulcers
  • Viral infections – including the cold sore virus, chickenpox, and hand, foot and mouth disease
  • Medical conditions - including vitamin B12 or iron deficiency, Crohn's disease, coeliac disease, reactive arthritis, HIV, lupus, Behçet’s disease
  • Certain medications or medical treatments may also cause mouth ulcers

It's usually safe to treat mouth ulcers at home to help reduce swelling and ease any discomfort.

Self care

Tips for easing discomfort and aid healing…

  • Antimicrobial mouthwash or protective paste, available from your pharmacist
  • Use a soft toothbrush to brush your teeth
  • Use a toothpaste that doesn’t contain sodium lauryl sulphate, as this may be irritating
  • Avoid hard, spicy, salty, acidic or hot food and drink until the ulcer heals
  • Use a straw to drink cool drinks
  • Avoid things that may be triggering your mouth ulcers

Mouth ulcers can sometimes be a possible symptom of a more serious problem such as infection or mouth cancer. It's therefore essential that you contact Oakmead Dental Care as soon as possible if you notice:

  • Your mouth ulcer has lasted three or more weeks
  • You keep getting mouth ulcers
  • Your mouth ulcer becomes more painful or red
Patient Reviews

People are talking about us

The biggest complement we receive is when our patients refer their friends and family to Oakmead Dental Care. In fact, we have built much of our practice on these valued, trusted recommendations over the years. Read our reviews to hear why our patients are recommending us…

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Patient reviews

1389 Reviews

5.0

21st August 2026

Having been in pain for five days I was pleased to (at last) be seen. The dentist xrayed and explained the problem with my tooth, leaving me to make a decision as to what I wanted to do. I was given a prescription for antibiotics which I was told should take the pain away. I am to discuss the next step when I have my routine check up next week.

21st August 2026

Gemma was excellent and explained everything about my teeth very clearly.I felt no pain or discomfort which was amazing

18th August 2026

Oakmead combines everything you hope for in a dental appointment, from beginning to end. The Reception team are superb - welcoming, personable, smiling, efficient and reassuring - and the clinician and hygienist are the best too! I am so fortunate to be a patient there.

16th August 2026

Professional Trust Reliable Personal Friendly

16th August 2026

Everyone is extremely helpful and friendly, they put you at ease

15th August 2026

Friendly staff, familiarity of staff with personal situation, efficiency

12th August 2026

I am made to feel relaxed from the moment I enter the Surgery.

12th August 2026

Promptness of appointment. Clean surroundings. Friendliness of all staff

10th August 2026

Been with them for 60 years. They look after me so well

7th August 2026

The whole experience was highly satisfactory

7th August 2026

The team are so friendly. Paul, my daughter’s dentist, is always so patient and gets down to her level so the experience isn’t so overwhelming for her.

7th August 2026

Can rely on consistent standard of care and friendliness of all staff.

5th August 2026

Paul cassidy is an excellent dentist

3rd August 2026

Very friendly, confident and qualified staff

31st July 2026

Lovely staff, very professional and reassuring.

31st July 2026

As always everything was great.

30th July 2026

I have every confidence in Andrew and his team. He is an excellent and incredibly professional practitioner. He makes sure one knows exactly what to expect during each treatment. He is gentle in his approach to treatments and his staff are totally atuned to support his work.

29th July 2026

Mr Hopkins always makes you feel at ease and never judges. All people at practice are so friendly and helpful. Have been coming here for over 30 years and would never go anywhere else

24th July 2026

Profesionalism and humanity

23rd July 2026

Professional approach from all concerned. Very clean premises. Gentle treatment from hygienist and dentist. Didn’t feel rushed so time for a quick conversation.

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