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

1448 Reviews

5.0
RB

Robert Ball

Been a patient for 50 years, the staff across the board are absolutely amazing, if carlsberg done dentists

9th August 2026

Hygienist very professional, friendly+ helpful. Clearly knew her job+ I felt she did a great cleaning of my teeth. I was seeing her for the first time + was most impressed especially given her youth.

8th August 2026

Kate is a fantastic dentist - I've been seeing her for roughly 15 years and she always takes superb care. She also offers helpful advice and explains everything really clearly

5th August 2026

Always friendly,reliable and courteous.

5th August 2026

Fantastic team and a lovely relaxing atmosphere

5th August 2026

The clinicians are very skilled and they listen to the patient and remember what you have said previously .

2nd August 2026

All the staff are thoroughly experienced professionals in each of their roles within the practice, from the Receptionist through to the Dental surgeon. I always feel comfortable and well cared for in their hands.

RW

Robert Wall

Very professional practice, who take good care of their patients, clearly explaining treatments etc.

SH

Sally Holmes

All staff are always amazing!

BH

Bill Hart

Kate is the best dentist I have ever seen and Helene is the most gentle hygienist I have ever seen. Not much more to say!

30th July 2026

Amy is very thorough and informative about the process. Always gives great advice about dental care. She is a credit to the practice.

30th July 2026

The staff and especially the dentist that looks after me.

30th July 2026

Everyone is very professional but also approachable

30th July 2026

Was made the feel important rather than just another patient. Everything was explained to me in detail and the kindness and knowledge of the dentist & the staff was exemplary.I have never felt so relaxed attending the dentist!

MW

Marnie Windridge

Great visit as usual

JK

Jan Kirby

This was my first treatment with High Street Dental Practice and I was a little apprehensive to say the least.<br>From the moment I walked in, I was greeted by smiling, friendly receptionists. Then it was time to have my tooth extraction. Andy explained every step, was patient, caring and informative. He is a credit to his profession!<br>It was a pain free experience and I am so glad I chose to register with them ……. I’m one happy person!

30th July 2026

Was made to feel comfortable as possible while having a tooth extraction.

26th July 2026

Very efficient and professional as well as welcoming and friendly.

26th July 2026

I've been using the practice for several years and as a consequence, my oral health is better than it's ever been. Great team, great service.

25th July 2026

Best dental care supported by a really competent admin staff, consistently over years.

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