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

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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

1324 Reviews

5.0

2nd May 2026

On time, friendly staff, thorough explanation of treatment and advice

2nd May 2026

All staff are polite and courteous, making one feel valued as a patient.

1st May 2026

Everyone is very friendly and professional my dentist is the most gentle man when checking my mouth makes me feel relaxed as very nervous.

30th April 2026

I rate Mr Hopkins very highly

30th April 2026

Reception staff friendly and efficient Treatment excellent

29th April 2026

Checked in easily, didn’t wait long, polite, friendly staff. Great service from clinician and easy to book next appointment

26th April 2026

All the Staff are very professional and friendly. Nothing is to much for them. Thank You

24th April 2026

As Always friendly yet efficient Excellent service

23rd April 2026

Care and professionalism of Paul cassidy and his team.

23rd April 2026

Staff are friendly and cheerful

23rd April 2026

The surgery seem to actually care and everyone is personable. I feel confident coming to see my dentist and my hygienist. I live 3 hours away and don’t want to find a local dentist surgery. Thank you

23rd April 2026

A really good hygienist and a really good dentist. Both v experienced, with a lovely manner.

23rd April 2026

Very professional yet convivial treatment.

23rd April 2026

Always a friendly welcome and staff are so nice and professional. Best dental surgery in East Grinstead

17th April 2026

Jill took time to listen to me in relation to my sensitive tooth areas, took her time allowing me to take breaks if needed. She made the experience so much better than I’d previously recieved in the past from other hygienists.

17th April 2026

Very professional and caring

16th April 2026

Paul was very calm and knowledgeable. He took time to carefully understand my wants and needs and explained the different treatment options available to me. I left feeling very reassured and would highly recommend him.

16th April 2026

I have been with Oakmead for twenty-five years and have always been told the treatment I will receive and why. Everone, dentist, nurses and reception satff have always been courteous and helpful giving good advice.

15th April 2026

Polite informed staff dealing with cancer patient

12th April 2026

Kindness of all the staff re my disability problems

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