Why Do Mouth Ulcers Occur? Causes, Types & Solutions

April 03, 2026

Oral ulcers, commonly called mouth ulcers, are small but painful sores that develop inside the mouth. They may appear on the inner cheeks, lips, tongue, gums, or the roof of the mouth. Typically, they are round or oval in shape, with a white or yellow center surrounded by a red border.

Although oral ulcers are not contagious, they can cause significant discomfort, especially while eating, drinking, or speaking. In most cases, they heal within one to two weeks. However, recurrent mouth ulcers or ulcers that do not heal should never be ignored, as they may indicate an underlying health concern. At KIMS Dental Care – Best Dental Hospital in Kondapur and Secunderabad, we provide expert diagnosis and advanced oral ulcer treatment to ensure faster healing and long-term relief.

Common Causes of Oral Ulcers

Understanding the causes of oral ulcers helps in preventing recurrence. In many cases, the trigger is minor and temporary. However, some ulcers may be linked to systemic conditions.

Some of the most common causes include:

Accidental biting of the cheek, tongue, or lips
Sharp or broken teeth
Braces or ill-fitting dentures
Stress and anxiety that lower immunity
Nutritional deficiencies, especially Vitamin B12, iron, or folic acid
Hormonal changes, particularly in women
Spicy, hot, or acidic foods
Poor oral hygiene
Smoking or tobacco use

Certain medical conditions such as gastrointestinal disorders, autoimmune diseases, and viral infections can also lead to frequent mouth ulcers. Identifying the root cause is essential for effective treatment.

Types of Oral Ulcers

Oral ulcers are generally classified into three main types. Correct identification helps dentists recommend the right oral ulcer treatment.

1. Minor Oral Ulcers

These are the most common type of mouth ulcers. They are small, shallow sores that usually heal within 7–10 days without leaving scars. While painful, they are generally harmless.

2. Major Oral Ulcers

These ulcers are larger and deeper. They can be extremely painful and may take several weeks to heal. In some cases, they may leave scars. Professional dental evaluation is strongly recommended for major ulcers.

3. Herpetiform Ulcers

These appear as clusters of tiny ulcers that may merge to form larger painful sores. Despite the name, they are not caused by the herpes virus. They can be quite uncomfortable and often recur.

Signs and Symptoms You Should Not Ignore

While pain is the most noticeable symptom, oral ulcers can cause additional discomfort and complications.

Common symptoms include:

Burning or tingling sensation before the ulcer appears
Pain while eating or drinking
Redness around the affected area
Swelling or inflammation
Difficulty speaking or swallowing

If a mouth ulcer lasts more than two weeks, bleeds frequently, or keeps recurring, it is essential to consult an experienced dentist. Early evaluation at KIMS Dental Care can help prevent complications.

How Are Oral Ulcers Diagnosed?

Diagnosis of oral ulcers is usually simple and painless. At KIMS Dental Care, our dental specialists conduct a detailed clinical examination, assessing the size, location, and duration of the ulcer.

If ulcers are recurrent, severe, or suspicious, further investigations may be advised, such as:

Blood tests to check for nutritional deficiencies
Allergy testing
Biopsy (in rare cases)

Early and accurate diagnosis is crucial for effective mouth ulcer treatment and overall oral health.

Effective Treatment Options for Oral Ulcers

While many oral ulcers heal naturally, treatment helps reduce pain, speed up recovery, and prevent recurrence.

Common oral ulcer treatment options include:

Medicated gels and topical ointments to relieve pain and inflammation
Antiseptic mouthwashes to prevent infection
Pain-relieving oral sprays
Vitamin supplements in case of nutritional deficiency
Correction of sharp teeth or faulty dental restorations

Maintaining good oral hygiene, avoiding spicy foods, and staying hydrated significantly support the healing process.

At KIMS Dental Care – Best Dental Hospital in Kondapur and Secunderabad, we focus on identifying the underlying cause and providing personalized treatment for long-term relief.

Home Care Tips to Manage Mouth Ulcers

In addition to professional care, certain home remedies can help reduce discomfort:

Rinse your mouth with warm salt water
Avoid very hot, spicy, or acidic foods
Use a soft-bristled toothbrush
Manage stress effectively
Drink plenty of water

However, home remedies should not replace professional dental care, especially if ulcers are persistent or severe.

When Should You Visit a Dentist?

You should seek immediate dental consultation if:

The ulcer does not heal within two weeks
Pain becomes severe or unbearable
Ulcers recur frequently
There is unexplained weight loss or fever
You experience difficulty swallowing

Ignoring these warning signs may delay the diagnosis of serious underlying conditions. Timely dental care ensures better outcomes and peace of mind.

Visit KIMS Dental Care – Your Trusted Dental Experts

If you are suffering from recurrent mouth ulcers or persistent oral pain, consult the specialists at KIMS Dental Care – Best Dental Hospital in Kondapur and Secunderabad.

📍 Kondapur Branch:
KIMS Dental Care
#1-112, Survey No. 55/EE, Kondapur, Serilingampally Mandal, Hyderabad – 500084
📞 Call: 99631 00600

📍 Secunderabad Branch:
KIMS Dental Care
1-8-31/1, Minister Road, Secunderabad – 500003
📞 Call: 96401 00600

🌐 For Online Booking: Visit our website: www.kimsdentalcare.com

Don’t let mouth ulcers affect your comfort and confidence. Book your consultation today at KIMS Dental Care and receive expert oral ulcer treatment from the best dental team in Hyderabad.

KIMS Dental