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

1192 Reviews

5.0

3rd September 2026

Professional and friendly treatment by all staff

27th August 2026

Continued excellent patient treatment, and care. Superb Staff.

26th August 2026

When I arrived at the Dental practice, I was greeted with a really warm welcome from receptionist who I believe are Sally and Emma. I went upstairs where literally as soon as I sat down I was called him by the nurse unfortunately I don’t know his name and Preet is one of the most kind caring Dentist I’ve ever had. He explains everything in such detail and I have so much trust in him as a clinician. I would highly recommend him and the team. I find the going to Kingsclere is more like visiting family than actually going to the Dentist.

26th August 2026

For check in I was recognised immediately when I said my appointment time. All staff were friendly and chatty before and after treatment. Very comfortable and easy place to go

VA

Veronica Austin

As always Preet was friendly, professional and efficient.

RB

Rachel Burchett

I have been going to Kingsclere dental since I was a child. The staff as always so friendly and explain everything so clearly. I actually enjoy going to the dentist to make sure everything is ok, but that’s down to the hygienist and dentist for making me feel so comfortable.

WB

Wendy Busby

Very friendly staff. I was seen promptly, and got the dates I wanted for my follow up appointment.

15th August 2026

The feeling I get whenever I visit is a team of people that are really professional but are also friendly and listen to my needs or what I have to say. They discuss with you what the treatment they are proposing will do or look like and check that is what I want to achieve or am happy with. Jay is especially good as he takes into account my needs whilst treatment is progress so I remain relaxed whilst it's done.

15th August 2026

Everything was explained and I was told what to expect during each process. During my Airflow treatment I was asked if I was okay and again told what to expect during each process. The staff could not have been any nicer than what I saw and received.

14th August 2026

I used this practice for over 30 years before recently returning. Dentist made recommendations but understood my financial limitations

13th August 2026

Very pleasant and professional staff. I am always made to feel as comfortable as possible

12th August 2026

All good, on time. Hygienist really good.

ML

Martin Lawrence

Service is very good and no problems

6th August 2026

Excellent service from reception and treatment from Jay as always

GP

Geoff Paice

Great service once again.

JW

Janet Whitear

Always friendly, helpful staff

31st July 2026

Preet is very helpful and empathic and in all my recent visits I've been highly satisfied. He is an excellent dentist .

DW

Dale Whitehouse

Everyone is always friendly and happy to help with whatever your needs are, your comfort is their number one priority!

30th July 2026

All staff were very helpful and friendly. Treatment painless and I was treated with respect and kindness

30th July 2026

My dentist is very thorough and we have very good rapport.

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