Call me back

We’re Accepting New Patients!

Read More Next

Looking for a caring and professional dental practice? We’re excited to welcome new patients to our clinic! Whether you’re due for a check-up, need treatment, or are looking to enhance your smile, our friendly team is here to help.
Contact us today to book your first appointment—we look forward to meeting you!

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 High Street 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 High Street 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

1174 Reviews

5.0

25th August 2025

Everyone at high street dentist are always so pleasant and very helpful especially my dentist she always has time go listen to me

25th August 2025

Professionalism of staff

KC

Keith Culling

First class experience as always . Every single member of staff is a pleasure to deal with. A big thank you to Kate , Amy and Denise today.

PC

Peter Cottrell

A lovely courteous and helpful experience from all the staff for my son William and myself. Even a very welcome cup of tea supplied after a long journey to the appointment. Fantastic dentist and nurse William looks forward to his next appointment.

JS

Jackie Stagg

Knowing Jas had retired, I was a bit dubious as to who was going to replace him. I needn't of worried, as Sam was brilliant, so easy to talk to and she had a very caring nature. Well done for hiring her as she is fab

17th August 2025

All the staff are very friendly and make you feel at ease

17th August 2025

Confidence that both treatment and attention given were very good indeed.

17th August 2025

I have been with the dentist for years. I trust them and always have a consistent wonderful service. On time, honest and value for money

16th August 2025

Every member of the staff team were very professional, kind and considerate. I was kept informed throughout the procedure which was reassuring

16th August 2025

The dental hygienist is very patient, gentle and aware of my needs

15th August 2025

I've used the High Street Dental Practice for several years and have never been anything less than highly satisfied with their service. All the staff there are great, particularly Aimee and Kate.

15th August 2025

It was all very pleasant. From checking in at reception, waiting for a few minutes in the comfortable waiting room, receiving my check up with both dentist and hygeinist.

JC

Judith CG

Very reassuring and non-judgmental. Feels like I'm back on teach now.

KN

Karen Nelson

Very caring and comforting. Not scared of the dentist any more like I was as a child!!!

PC

Paul Cooper

I've been using the High Street Dental practice for several years now and they are brilliant. They have helped me to enjoy much better dental health and I can't recommend them highly enough.

VM

Valerie Maynard

See Andrew, you wouldn't find a better dentist in the whole of Sussex, we had such friendly service.

CB

clare Baldock

Lovely, caring team.

10th August 2025

Everybody has time and patience for me, an anxious person, but I have been going there for years and they have always been excellent. I have no reason to be overly concerned when the time comes to see them, it is always a pleasure

9th August 2025

Kind and approachable staff

9th August 2025

All of the staff are professional, warm, caring and a credit to their profession

Prev Previous
Next Next