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 Green Park Dental 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 compliment we receive is when our patients refer their friends and family to Green Park Dental. 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…

Leave us a Google review

Patient reviews

1073 Reviews

5.0
RR

Rachel Roberts

Had my first appointment today. This is a very well run practice. Everyone I met was calm, efficient and friendly. I needed a small treatment which was carried out today to save a return visit.<br>Great value for money.

DA

Debbie Abraham

From my very first visit I felt comfortable and well looked after. Everything was explained well and the team were fabulous.

AW

Andrew Wallis

Excellent treatments by the hygienist and dentist. They were both very caring , put me at my ease and explained what they were doing and why and advised me how to improve my dental hygiene.

ER

Elsie Roberts

I can't recommend Green Park Dental Practice highly enough! I saw Josie the dentist, along with hygienists Lauren and Heather. Everyone was friendly, professional and gentle. I'll definitely be back for my regular clean and polish ~ not painful at all! Thank you! ✨

TB

Tiff Black

Fabulous team at Green Park.

24th September 2026

Best dentist I’ve ever been to couldn’t recommend it enough

23rd September 2026

Quick, clean and kind

18th September 2026

All the team at the practice, whether it's the reception team, the dental hygiene team or the dentistry team, are all excellent, very professional, efficient and extremely considerate.

18th September 2026

Very pleasant staff and good treatment

12th September 2026

Very friendly and reassuring. Explained everything fully. Charming

10th September 2026

As a nervous patient I would 100% recommend this dental practice. Really friendly team and very reassuring

9th September 2026

Patient professional always has been second to none in the treatment of my teeth always the best none evasive procedure first

9th September 2026

Your Reception staff are incredibly friendly and efficient. I am very happy with my new Dentist since my previous one retired. She is excellent and has a kind and polite manner too!

8th September 2026

The service was prompt, efficient, and friendly. Information was delivered plainly, but did not skip explanation.

5th September 2026

The reception staff, the hygienist and the dentist were all professional, friendly and Very helpful discussing my teeth and gums. I was able to discuss possibility of teeth whitening and ask questions which were all answered very clearly.. it was a good experience overall.

4th September 2026

Good clinical care and patient centred approach, and punctuality of appointments.

MW

Matthew Wills

Excellent in all respects.

27th August 2026

lovely reception staff making the visit pleasantdescription of both inputs on that dayhelpful information

27th August 2026

The reception staff were friendly . The dentist and nurse were very good and chatty. It was a pleasant visit.

26th August 2026

The team's professionalism inspired confidence. I feel very safe in their hands. Treatments are clearly explained.

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