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…

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Patient reviews

960 Reviews

5.0

19th September 2026

The dentist (Ian) is always very friendly, makes the experience more friendly and when I suggest to spend money for treatments he doesn't believe I need he will tell me, so I know he is not just trying to make money

19th September 2026

As a nervous patient, always feel this is taken into account.

19th September 2026

All the Staff are friendly and caring and all aspects of my treatment were explained.

18th September 2026

Our dentist was outstanding, he explained everything in detail and reassured my 10yr old son. I couldn't fault him at all. He opened an evening appointment especially to see us, where he did 2 very complicated fillings where the nerves were exposed. My don felt no pain, and has had no pain after. Im so impressed that i have also registered myself here. Outstanding service and highly recommended.

17th September 2026

Made me feel comfortable I am a nervous patient.Explained everything clearly. Lovely clean surgery . Reception staff very friendly and calming . Dental nurse very understanding of my nervousness

16th September 2026

Professional and friendly

FS

Fran Sutcliffe

AJ is amazing at implants. Very professional and careful with his work. The implant prep was completely pain free after a couple of injections. I had a little discomfort the next day which was easily sorted with a paracetamol. The following day and then onwards no pain at all!!<br>I put this down to the careful preparation and procedure carried out by AJ. I would have no hesitation in recommending him to friends and family.

13th September 2026

Everyone is always very friendly and helpful - from the reception team to the Dentist.

12th September 2026

Everyone at the practice was so friendly and made everything so easy. Didn't have to wait too long for my appointment and I am booked in again

11th September 2026

The practice is very modern and very efficient. The staff are all patient focused, extremely pleasant and competent.

10th September 2026

Very friendly, organised and well laid out

9th September 2026

Nice staff that put me at my ease

8th September 2026

Staff were professional and polite and sympathetic.

6th September 2026

Expert clinicians who operate in a modern, well run dental practice.

5th September 2026

Easy and thorough.

3rd September 2026

Hygeinest on time, receptionist gave me a warm welcome, assistant was really helpful, was treated with respect and care which helps my anxiety levels.

3rd September 2026

The previous evening part of a molar split in two. Phoned the next day, offered an appointment later in the morning. Receptionist very helpful and polite.Dentist fixed the problem - all done in 30 minutes. Cost £158 happy to pay for such an efficient service.

28th August 2026

Very friendly, professional service from all involved

28th August 2026

They are all great people. I wouldn't go anywhere else. Two very minor comments to fill up this space: There could be blue-rimmed safety classes for boys and a magazine in reception about classic cars (not that there'd ever be much time to read it). Oh and the lift can be a Godsend on the days when my legs are very weak. That's it. You can't improve on perfection!

28th August 2026

Great care by Darren and Gemma, polite, kind, and professional

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