Mouth Ulcers

Mouth ulcers are small sores that affect the inner lips, tongue, gums, inner cheeks or roof of the mouth. They are very common and most cases can be relieved with straightforward treatments.

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What are mouth ulcers?

Mouth ulcers are small sores that develop on your inner lips, tongue, gums, inner cheeks or roof of your mouth.

While mouth ulcers are very common and often nothing to worry about, they can be sore and can make eating, drinking and speaking uncomfortable.

Most mouth ulcers will heal within two weeks without treatment, but some may be more long-term or severe, requiring treatment.

What types of mouth ulcers are there?

There are several types of mouth ulcers:

Canker sores: also called aphthous ulcers, canker sores are the most common type of mouth ulcer. Some people are more prone to them and they usually appear as a result of minor trauma, like biting your inner lip, eating acidic foods and stress.

Oral lichen planus: this is an inflammatory condition that sometimes causes sores and small swellings in the mouth. Oral lichen planus most commonly affects women over 50.

Erythroplakia: this condition causes red patches of gum, often behind the lower front teeth or under the tongue and is often caused by smoking or chewing tobacco. Erythroplakia patches are usually precancerous or cancerous.

Oral cancer: oral cancer lesions can appear as red or white mouth sores or ulcers, but unlike normal ulcers, they won’t heal on their own. If you’ve had a mouth ulcer for more than 3 weeks, it’s important to have it checked by a specialist.

What are the symptoms of mouth ulcers?

Mouth ulcers often appear as sores on your inner lips, tongue, gums, inner cheeks or roof of your mouth. 

The exact signs and symptoms of mouth ulcers vary depending on the cause, but they can be:

  • Round or oval sores with a white, yellow or grey centre and a red or white edge
  • Small but painful lumps or swellings
  • Singular or multiple
  • Irritated by salty, acidic, spicy or sour foods and drinks
  • Sore when eating, drinking, speaking and brushing your teeth

Mouth ulcers aren’t contagious, so they cannot be spread through kissing or sharing food.

What are the complications associated with impacted wisdom teeth?

Many things can cause ulcers to develop, including a range of lifestyle factors and medical conditions.

Common causes of mouth ulcers include:

  • Minor trauma, like biting your lip or burns from hot foods or drinks
  • Braces, rough fillings, a sharp tooth or badly fitting dentures
  • Harsh or abrasive toothpaste or rough brushing
  • A food intolerance or allergy
  • Fatigue or lack of sleep
  • Stress or anxiety
  • Smoking or chewing tobacco
  • Hormonal changes, such as during pregnancy
  • Genetic predisposition
  • A vitamin deficiency
  • Certain medicines, including some NSAIDs, beta-blockers and antibiotics
  • Stopping smoking
  • Hand, foot and mouth disease
  • Certain digestive conditions, like Crohn's disease and coeliac disease
  • Having a weakened immune system
  • Eating lots of acidic or salty foods

How are mouth ulcers diagnosed?

If you have recurring ulcers or have had an ulcer for more than three weeks, we recommend making an appointment to see a OneWelbeck maxillofacial specialist at our Oral and Facial Health Clinic. Our specialists will look to diagnose the cause of your ulcers and implement an effective treatment plan.

Your specialist will take a thorough history and examine your mouth. They may also perform blood tests, mouth swabs and sometimes an oral biopsy if you have a lot of ulcers, they’re severe or a health condition is suspected.

How are mouth ulcers treated?

Some things you can do at home to help speed up the healing process and reduce pain caused by mouth ulcers include:

  • Taking care whilst brushing your teeth using a soft-bristled toothbrush
  • Drinking cold beverages through a straw
  • Waiting for hot foods and drinks to cool down before consuming
  • Eating soft foods and avoiding rough, crunchy foods, like crisps and crusty bread
  • Drinking plenty of water
  • Rinsing your mouth with warm saltwater a few times a day
  • Avoiding acidic, salty and spicy foods
  • Using an over-the-counter oral gel

Things that can help you prevent mouth ulcers include: 

  • Brushing your teeth twice a day
  • Eating a healthy, balanced diet with plenty of fresh fruits and vegetables
  • Reducing stress
  • Getting plenty of good-quality sleep
  • Stopping smoking and chewing tobacco
  • Visiting your dentist for regular checkups and cleanings
  • Treating and managing any underlying health conditions

If your mouth ulcers are severe or recurring, our specialists may recommend one or several of the following treatments:

  • Antiseptic gels or mouthwashes
  • Anti-inflammatory mouthwashes or pastes
  • Steroid ointments, sprays or tablets
  • Painkiller gels, ointments, sprays or tablets
  • Specific treatments for underlying conditions (your specialist will discuss these with you)

Get in touch today to book an appointment with a OneWelbeck maxillofacial specialist.