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 Sturminster 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

Dentist

Ian Mercer

Ian joined Sturminster Dental Care in January 2016. lan-qualified from Guys Hospital Dental School in 1991 and has spent much of his professional career in the Royal Army Dental Corps including operational commitments in many countries. lan left the army in 2012 after serving for 21 years. Ian is really enjoying being part of the team and providing the best care to all of our patients.

Ian Mercer
Patient Reviews

People are talking about us

The biggest compliment we receive is when our patients refer their friends and family to Sturminster 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…

Leave us a Google review

Patient reviews

878 Reviews

5.0

4th June 2026

Ian Mercer is a likeable pleasant person and explains what is going to happen during any procedure

4th June 2026

Helen the dental hygienist is a lovely lady and very very good at her job. She always introduces me to the nurse and does her best to make me feel comfortable and always advises me of what she is going to do. Helen really encouraged me to give up smoking. With her gently persuasive approach. She also advises me on how to clean my teeth better. Thank you Helen for your service. Keep doing what you do.

3rd June 2026

As a very nervous patient they are always so helpful and professional and make me feel safe and relaxed

3rd June 2026

Always friendly and welcoming, takes the time to explain everything. Couldn't ask for better service!

2nd June 2026

Everyone was very polite, helpful, kind and considerate.

2nd June 2026

Professionalism, courtesy and friendliness of all staff in spotless surroundings. Thoughtful advice, excellent care through treatment.

2nd June 2026

Wendy is an excellent hygienist and I always feel very cared for and relaxed. Her assistant, Gemma was very polite and easy to talk to.

31st May 2026

The staff are very professional but friendly as well. Treatments are explained and they check your wellbeing all the way through.

26th May 2026

Friendly helpful and professional approach of everyone

23rd May 2026

It all worked the way it should have worked.

23rd May 2026

I was seen by the Hygienist who is lovely and always gives me great tips on dental care. The staff are always welcoming. The dental surgery is comfortable and very clean.

22nd May 2026

Experienced professional friendly

21st May 2026

Friendly smiley reception team, friendly dentist (Darren) who took plenty of time to answer my questions and was very professional and kind, lovely dental nurse, clean and tidy throughout.

21st May 2026

Very friendly and approachable staff

20th May 2026

All the staff put me at ease. I feel very confident in all the staff.

20th May 2026

I am delighted to find an implantologist near to where I live as my existing implantologist (at Bath) is retiring. AJ at Sturminster Newton is excellent and I will be booking regular yearly check ups with him. He explained and discussed my existing problem and rectified this at the time of my initial appointment.After my next hygienist appointment at my existing clinic (which is already booked) I will also move this to the Sturminster Dental Care. I will then have AJ (the implantologist) and hygienist under one roof. The staff are excellent, most helpful and friendly. Overall a great experience.

MS

Metin Sen

Nicky was very friendly and I felt very well looked after by Colin

19th May 2026

First class all round as usual.

19th May 2026

I am completing this survey based on my appointment with the hygienist, which is and always is with Helen, my regular hygienist - excellent.

18th May 2026

A nearly 10% increase in price from 6 months' ago is a bit steep so we'll most likely stretch the time between appointments as long as our teeth are in good health. But Ian is a great, kind and considerate dentist who epitomises what being a good clinician is all about. Finding an NHS dentist in this area is also a reason for staying!

Prev Previous
Next Next