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

People are talking about us

The biggest compliment we receive is when our patients refer their friends and family to Kingsclere 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…

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Patient reviews

1127 Reviews

5.0
DO

David Oliver

Brill all good

3rd May 2026

From the welcome at reception ,to the treatment and explanation of further treatment required. all was carried out in a very personal manner.

1st May 2026

Peaple make me feel at ease

29th April 2026

Great service from the clinician

25th April 2026

I always have a good experience whether its a check up or the hygienist everyone understands my gag reflex and takes their time with me.

24th April 2026

Carried out quickly , cleanly , professionally, and painlessly!

24th April 2026

All staff from receptionists to the Dentist were professional, friendly, helpful and informative.

24th April 2026

The treatment provided has given me respite from the discomfort of a broken tooth, enabling me to eat without making my tongue sore.

18th April 2026

Friendly helpful dentist and reception staff . The dentist explained clearly and in an enthusiastic patient way how my teeth are and what to do to keep them in a good condition.

15th April 2026

Very easy to check in, receptionist really pleasant, helpful and friendly. No delay for treatment to start. Very efficient charming clinician and explained all procedures. Dental nurse very efficient and noticeable they worked well together as a team during the procedure.

10th April 2026

I’m nervous about seeing a dentist but they made me feel so relaxed and I felt like I was in good hands and not being judged

TR

Tim Roberts

Conscientious and thorough checkup, clear plan for treatment with rationale, helpful, efficient and pleasant front desk service

2nd April 2026

Excellent service. Dentist was gentle and understanding and put me at ease.

2nd April 2026

It's almost a pleasure to visit this dental practice! I've never LOVED visiting the dentist, but Preeta (spelling...apolgies)? is just such a lovely person and gentle too. Thank you!

PW

Paul Williams

Excellent service as always!

26th March 2026

Into the appointment on time, had the new hygiene treatment and I felt it was better than before. Everything explained to me very well and clearly.

26th March 2026

Efficient reception, very experienced dental staff and good support staff

24th March 2026

Friendly approachable staff answered my questions througout! Booked next appointment for 6 Months time no problem!! Was an appojntment for my two young children they enjoyed and felt relaxed which is important!

21st March 2026

All staff are friendly , aware of my needs in the matter of treatment or hygiene, and answer any questions i may have or make me aware of any discussions they may have involying me either with or without my presence!

JS

Jeremy Saint

I am very pleased with the dental service that I received on the 18 March 2026.

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