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 High Street Dental Practice 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 High Street Dental Practice. 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…

Patient reviews

1410 Reviews

5.0

27th June 2026

Friendly and helpful admissions and careful and thorough with clinician

27th June 2026

Both Andy the Dentist and Jess the hygienist take time and care. They engage with you and put you at ease. This is my childhood practice and now have to travel an hour to get there but the level of care you are given, for me, outweighs the travel.

B

brian7913

Usual standard of excellence and professionalism

25th June 2026

Sorted the problem

24th June 2026

The hygienist and assistant were awesome, lovely ladies that did a great job

24th June 2026

Andy is great the lovely young lady hygienist was equally outstanding

24th June 2026

I've been going to this Practice for a few years now and am happy with going there. I'm listened to when I go for my appointments, appreciating the life sometimes gets in the way of good dental practice. I'm looked after very well by Kate and Helena and the dental nurses that support them. I have complete faith in them that they will always do their best to help me look after my teeth, gums and oral hygiene.

24th June 2026

They are all very friendly and make you feel at ease would 100 per cent recommend them

23rd June 2026

Lovely staff very kind

19th June 2026

All the staff, reception, hygienist, dentist are always so gentle, helpful and make every visit as relaxing as it can be. I would highly recommend Helena and Kate.

SP

Sylvia Pridmore

Lovely dentist, very friendly, reassuring and put you at your ease

17th June 2026

Overall v professional and very understanding.

16th June 2026

Always a very friendly efficient service

16th June 2026

I don't like going to the dentist, but High Street Dental have been my dentist now for over five years and the standard of treatment and care is first rate. Every treatment they have specified has been appropriate, explained, and successful.

JB

Jayne Barry

The best dentist and hygienist I have ever had ! Super super friendly. Never thought I’d actually look forward to going !

10th June 2026

All staff are polite and professional who listen to the issue and act apon it. From calling and making the appointment, to checking in and receiving treatment I felt cared for and treated extremely well. For a very nervous patient all staff are reasuring, patient and explain averything putting me at ease

10th June 2026

I was very nervous going to dentists but the Hugh Street dentist put me ar ease. I actually feel happy going now. Would highly recommend them. Everyone is just so nice

4th June 2026

Dentist & Hygienist exactly as I had expected. Perfect service.

3rd June 2026

Great team at the practice, friendly environment

MB

Moira Benn

Always confident of receiving a high level of care in a professional and friendly environment.

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