Mouth ulcers are small, painful sores that develop inside the mouth, including the inner cheeks, lips, tongue, gums, or the roof of the mouth. While they are usually harmless and heal on their own within one to two weeks, they can make eating, drinking, and speaking uncomfortable.
At Dr. White Dental Clinic, we help patients identify the cause of recurring mouth ulcers and provide effective treatment to relieve pain and promote faster healing.
What Are Mouth Ulcers?
Mouth ulcers, also known as canker sores, are shallow sores that appear inside the mouth. They are different from cold sores, which usually occur on the outside of the lips and are caused by a virus.
Most mouth ulcers are round or oval, with a white, yellow, or grey center surrounded by a red border.
Common Causes of Mouth Ulcers
Several factors can contribute to the development of mouth ulcers, including:
- Accidental biting of the cheek or tongue
- Sharp or broken teeth
- Poorly fitting dentures or braces
- Stress and anxiety
- Vitamin B12, iron, or folic acid deficiency
- Hormonal changes
- Certain medications
- Spicy, acidic, or very hot foods
- Food allergies or sensitivities
- Viral or bacterial infections
- Reduced immunity
If mouth ulcers occur frequently or take a long time to heal, they should be evaluated by a dentist.
Symptoms of Mouth Ulcers
Common symptoms include:
- Small round or oval sores inside the mouth
- White, yellow, or grey center with a red border
- Pain or burning sensation
- Difficulty eating or drinking
- Discomfort while speaking
- Sensitivity to spicy or acidic foods
How Are Mouth Ulcers Treated?
Treatment depends on the underlying cause. Your dentist may recommend:
- Antiseptic mouthwash
- Pain-relieving oral gels
- Protective ulcer pastes
- Topical medications
- Vitamin supplements if a nutritional deficiency is identified
- Smoothing or repairing sharp teeth causing irritation
- Orthodontic adjustments if braces are contributing to the ulcers
Most ulcers heal within 7–14 days with proper care.
Home Care Tips
To reduce discomfort and support healing:
- Rinse your mouth with warm salt water.
- Maintain good oral hygiene using a soft-bristled toothbrush.
- Drink plenty of water.
- Avoid spicy, salty, acidic, or very hot foods.
- Avoid smoking and tobacco products.
- Eat a balanced diet rich in vitamins and minerals.
- Manage stress through healthy lifestyle habits.
When Should You Visit a Dentist?
Seek professional dental care if:
- An ulcer lasts longer than two weeks.
- Ulcers keep coming back frequently.
- The pain is severe and interferes with eating or drinking.
- You develop fever or swollen lymph nodes.
- The ulcer is unusually large or continues to grow.
- You notice persistent bleeding or unexplained changes in the ulcer.
Persistent mouth ulcers should always be examined to rule out underlying dental or medical conditions.
Can Mouth Ulcers Be Prevented?
Although not all mouth ulcers can be prevented, you can reduce your risk by:
- Brushing and flossing daily
- Eating a healthy, balanced diet
- Avoiding foods that trigger ulcers
- Drinking enough water
- Managing stress
- Visiting your dentist regularly for oral health check-ups
Frequently Asked Questions
Are mouth ulcers contagious?
No. Most mouth ulcers are not contagious and cannot spread from one person to another.
How long do mouth ulcers last?
Most mouth ulcers heal naturally within one to two weeks.
Can braces cause mouth ulcers?
Yes. Braces may temporarily irritate the inside of the mouth, especially after placement or adjustments. Orthodontic wax can help reduce friction.
Should I be worried if an ulcer doesn’t heal?
Yes. Any mouth ulcer that persists for more than two weeks should be examined by a dentist or healthcare professional.
Conclusion
Mouth ulcers are common and usually heal without complications, but recurring or long-lasting ulcers may indicate an underlying issue that requires professional evaluation. Early diagnosis and appropriate treatment can help relieve discomfort and protect your overall oral health.
If you’re experiencing painful or recurring mouth ulcers, Dr. White Dental Clinic is here to help. Book an appointment with our experienced dental team for a thorough examination and personalized treatment.