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 Kingsclere 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

Meet the team

Preetpal Marjara

Dentist

GDC NO. 283324

Jaymal Kotecha

Dentist

GDC NO. 259185

Ashwynn Dhar

Dentist

GDC NO. 258351

Mohammed Riaz

Dentist

GDC NO. 230632

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Patient reviews

1147 Reviews

5.0
KC

kellie-jayne cox

I always receive a wonderful service at Kingsclere, from front of house through to the dental treatment. It makes going to the dentist a nice experience. Thank you all.

30th May 2026

Professional

JT

Joanne Taylor

Always friendly and very efficient service. Thank you

29th May 2026

Timing and explanation of treatment cannot be faultef

PC

Paul Cornaia

The lady at reception this morning (8:00) was extremely helpful and friendly. Excellent customer service – 10/10.

23rd May 2026

All ok

22nd May 2026

everyone I came into contact with was very helpful. the clinician and hygienist explained everything carefully, I didn't feel rushed which makes for a pleasant overall experience.

22nd May 2026

The cleaning treatment was well explained to me and the clinician checked throughout the procedure that everything was ok, and I wanted him to continue.The dentist was welcoming and thorough when checking my teeth.

21st May 2026

It’s always a pleasure to be seen by Preet. He is friendly, professional, calm, and knowledgeable. The nurses and reception staff are all very friendly, and always helpful. They all go above and beyond to ensure a brilliant service

MR

Marilyn Redman

Friendly, helpful, professional and answered any questions I had.

AH

Anthony Hirewear

Always 100% Preet and reception team friendly helpful and professional. I would struggle without these guys in my life.

15th May 2026

Everyone was very kind and caring. My overall experience was very good. No complaints.

14th May 2026

This was a routine check-up, which followed up a previous extraction at the beginning of the year. I was advised that everything was in good order and a booking was made for a visit in six months time

14th May 2026

attention from everyone first class

13th May 2026

The staff are always incredible. The reception team always go above and beyond to accommodate me and my needs and Preet is just one of a kind. Generous courteous and gentle.

CW

Cedar Wood

Excellent professional and friendly service. I look forward to my dental checkup and my hygienist appointments

13th May 2026

Always friendly and lots of smiles. I've been with you now for a few years.

11th May 2026

The dentist is always ready to listen and is always extremely polite, professional & ready to answer questions.

9th May 2026

A very easy process

8th May 2026

All staff where pleasant and friendly.

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