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Understanding Mouth Ulcers: Causes, Remedies, and When to Seek Help

  • Writer: Midline Dental Care
    Midline Dental Care
  • Nov 14, 2025
  • 3 min read

Updated: Jan 26

Mouth ulcers causes

Mouth ulcers are small, painful sores that make eating, speaking, and even smiling uncomfortable. They’re extremely common, and most people experience them at least once in their lives. But when they keep returning or last too long, it’s a sign your body is trying to tell you something.


Let’s understand mouth ulcers causes, effective remedies to prevent them, ways to get relief, and when to visit a dentist.


What Are Mouth Ulcers?


Mouth ulcers, also called canker sores, are shallow, round or oval lesions that form inside the mouth, on the tongue, cheek, or gums. They are usually harmless but painful. Common symptoms include:


  • Burning sensation

  • Difficulty eating spicy or sour foods

  • Pain when brushing

  • A white or yellow center with a red border


Common Causes of Mouth Ulcers


Stress and Lack of Sleep


Stress affects immunity and can trigger ulcers in many patients. It’s essential to manage stress effectively for overall health.


Vitamin Deficiencies


Low levels of Vitamin B12, iron, folic acid, or zinc can lead to recurring ulcers. Ensuring a balanced diet can help prevent these deficiencies.


Accidental Biting or Brushing Hard


Minor injuries, like biting your cheek or brushing too vigorously, can trigger sores. Be gentle when brushing to avoid irritation.


Food Sensitivities


Spicy foods, citrus fruits, and acidic drinks can irritate the lining of the mouth. Pay attention to what you eat to identify potential triggers.


Hormonal Changes


Many women experience ulcers during hormonal shifts. This can be particularly common during menstruation.


Dry Mouth


Reduced saliva (xerostomia) causes irritation and increases ulcer risk. Staying hydrated is crucial for maintaining oral health.


Underlying Medical Conditions


Ulcers that don’t heal may indicate allergies, gastric issues, autoimmune diseases, or infections. If you notice persistent ulcers, it’s important to seek medical advice.


Home Remedies for Relief


Warm Salt-Water Rinses


A simple rinse with warm salt water reduces bacteria and speeds healing. It’s an easy and effective home remedy.


Honey or Ghee Application


Both honey and ghee soothe the sore and reduce discomfort. Applying a small amount can provide quick relief.


Avoid Spicy, Hot, or Acidic Food


These can worsen pain and delay healing. Opt for bland foods while your mouth heals.


Stay Hydrated


Keeping your mouth moist supports healing. Drink plenty of water throughout the day.


B-Complex Supplements


These can be useful for patients with recurrent vitamin-related ulcers. Consult with a healthcare provider for the right dosage.


When to See a Dentist


You should visit a dentist if:


  • Your ulcer lasts longer than 10–14 days

  • You get ulcers monthly

  • The pain is severe

  • The ulcer looks unusually large

  • You have fever or swollen lymph nodes

  • You feel burning or numbness in the area


Persistent or recurrent ulcers may need proper diagnosis and treatment. At Midline Dental Care, our specialists evaluate the cause, provide medication, perform laser therapy for fast healing, and guide you through long-term prevention.


Understanding the Importance of Oral Health


Maintaining good oral health is essential for your overall well-being. Mouth ulcers can be a sign of underlying issues, and addressing them promptly can prevent complications. Regular dental check-ups can help catch problems early and keep your mouth healthy.


Conclusion


Mouth ulcers are common, but they shouldn’t disrupt your life. Understanding the cause helps you prevent them, and professional care ensures they heal quickly and don’t return. If you’re struggling with frequent ulcers or long-lasting pain, it’s time to get expert help.


Book your oral health consultation at Midline Dental Care and find lasting relief from mouth ulcers.

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