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

1171 Reviews

5.0
JW

Jacky Wilde

Friendly staff, welcoming and helpful. Great service from hygienist and dentist.

23rd July 2026

Staff very courteous and treated as an individual. Took time to explain things.

23rd July 2026

I’ve been going to Kingsclere for over five years and always receive a lovely warm and welcome from the reception team. My Dentist I see is Preet and I highly recommend him for anybody joining the practice his nurse Michaela listen to everything that was being said from the clinician and had a nice calming manner I found all the staff at Kingsclere to be first class

RJ

Rosalie Joiner

Great service & great team!

17th July 2026

You haven't yet asked this question but I was not satisfied the following day when my temporary crown came out and my appointment for a permanent time is in 3 weeks' time.

17th July 2026

Very approachable and patient dentist who explains things as we go

NP

NEIL PINK

Excellent service

10th July 2026

This was an emergency appointment for a broken filling There were no immediate appointments available. However Emma was able to offer one later the same day due to a cancellation as she knew I was going on holiday. I was extremely grateful. She is a great asset to your practice!

9th July 2026

Understanding reception staff. Kind dentist who interacted with great kindness towards my daughter

MV

Misha Verkerk

Very friendly, good with kids. Thank you

5th July 2026

On time and good friendly staff

HH

Helena Hunt

Very welcoming dental practice. The staff are very friendly and helpful.

3rd July 2026

Principally my dentist PP is very competent, communicative and pleasant.

3rd July 2026

I have used this dental practice for years I know them. They are within walking distance from home I have used a dentist located along the road since I was taken as a child to mr Royle. Kingsclear came along years later and I just joined them at first with PPP and continue to do so as an oap I hope this helps

AT

Alf Turner

Great and high quality service from all members of staff.

30th June 2026

treatment by jaymal kotecha and assistant very caring

28th June 2026

My children are registered at Kingsclere Dental. We are always seen promptly and the reception staff are always so welcoming. Kemi is very very attentive towards my children and takes her time to explain things in an age appropriate way for them. Kemi stopped to make sure that my son was comfortable several times throughout his appointment and made a 5 year old feel at ease in an environment that a lot of people feel anxious. Kemi is a credit to Kingsclere.

P

Penny

Always very friendly and helpful

24th June 2026

Easy to check in, on time. Good clear explanation of hygiene treatment and dental treatment. All staff very friendly and professional.

19th June 2026

Needed emergency treatment for broken tooth. Came into practice to see if I could have appointment that day. Offered two times - later in morning and in afternoon. Was able to see my own lovely dentist (Mo) who sorted my problem, explainly clearly what was and was not possible. I left feeling greatly relieved. Thank you!

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