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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 Lynn Road 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 Lynn Road 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

535 Reviews

5.0
TP

Todd Parker

As a complete coward when it comes to going to the dentists I have enjoyed superb treatment and care by all staff over many years.

3rd February 2026

My husband has been a patient at Lynn Road Dentist for 20 years and has always received an excellent service, so much so that I have also changed to them. I have never met a member of staff who was unsociable, all friendly and professional, well done Lynn Road Dental Practice

27th January 2026

It is such a friendly helpful practise I am an anxious patient and it helps to see friendly staff I recommend Lynn Dental to anyone who is looking for a new dentist

PG

Philip Godwin

Staff are always helpful & cheery. Service is excellent & I can’t fault anything.

MS

martin smith

great as always

25th January 2026

My dentist made me feel very comfortable and very confident in what she was doing.

25th January 2026

Great team and very understanding on how nervous i am and so kind

25th January 2026

The whole experience of my visit was really good, no waiting satisfied with the dentist who gave me some advice on flexible dentures which I was pleased with. Brilliant

23rd January 2026

Clinician and nurse are amazing, so kind and professional.

22nd January 2026

The Dentist

22nd January 2026

Friendliness of the dentist. He explains all options very well and makes me feel like I have a say in my treatment.

21st January 2026

The very helpful receptionists who go out of their way to find you an appointment even at the last minute. The dentist who explains everything every step of the way. The cleanliness of the facility and the overall cheerfulness of all the staff. The clinic overall has a really nice atmosphere.

21st January 2026

Staff were polite and positive and I immediately felt at ease. All during the treatment and check up I was treated with respect and I had everything explained to me.

21st January 2026

Time the dentist took to explain possible courses of action.

CC

Carol Callery

Every time I have been there I have been made to feel totally relaxed and given information about my treatment, I would recommend Jay to anyone.

18th January 2026

I have been seeing Dr Joshi now for nearly 13 years and have every confidence in his treating me.Also the reception staff are very helpful and polite.

16th January 2026

Very informative staff

16th January 2026

Staff were calm and professional. Very good communication and interpersonal skills

16th January 2026

As a very nervous patient I was anxious about seeing someone other than my usual dentist but I needn't have worried. The dentist I saw reassured me and the procedure was carried out well and I felt in good hands. Thank you.

MS

MRS JEANETTE SANDERSON

I have been going to this Dentist ever since it first opened and I would not want to go to any other Dentist. the staff are all such lovely people and very good at what they do. Just would like to say a big Thank you to such a wonderful team x

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