When should I be worried about a mouth ulcer?

See a doctor immediately if the ulcer has not healed in 3 weeks, is larger than 1cm, is painless (which can indicate a more serious condition), keeps recurring more than 3 times a year, or is accompanied by fever, difficulty swallowing, or weight loss.

What causes recurring mouth ulcers?

Common causes include Vitamin B12 or iron deficiency, stress, hormonal changes, food sensitivities (spicy or acidic foods), sharp tooth edges or ill-fitting dentures, and in some cases, underlying health conditions like Crohn's disease or celiac disease.

Which Doctor to Consult for Mouth Ulcers in Chennai

Q: How long does a mouth ulcer take to heal?

Minor mouth ulcers typically heal on their own within 7 to 14 days without treatment. With proper treatment such as topical gels and mouthwashes, healing can be faster. An ulcer that persists beyond 3 weeks requires professional evaluation.

Quick Summary

Mouth ulcers are one of the most common oral complaints in India — yet most people don't know which doctor to consult. In most cases, a dentist is the right first stop. This guide explains why, what causes recurring ulcers, red flags to watch for, and how Dr. Barun's Dental Centre treats them in Velachery and ECR, Chennai.

Which Doctor Should You See for Mouth Ulcers?

This is the most searched question about mouth ulcers in Chennai — and the answer surprises many people. You don't need to see a general physician first. For the vast majority of mouth ulcers, a dentist or oral medicine specialist is the most appropriate doctor to consult.

Dentists are trained specifically in diagnosing and treating conditions of the mouth, gums, and soft tissue. They can identify the type of ulcer, determine whether it has a dental cause (like a sharp tooth edge or ill-fitting denture), and prescribe the right topical treatments — often resolving the issue in a single visit.

Dentist

First stop for most mouth ulcers. Diagnoses, treats, and monitors. Can prescribe topical gels and mouthwashes.

Best for most cases

Oral Medicine Specialist

For recurring or unusual ulcers. Specialist in complex mouth conditions and systemic causes.

For recurring cases

General Physician / ENT

Only if ulcers are linked to systemic conditions like anaemia, Crohn's disease, or immune disorders.

For systemic causes

What Causes Mouth Ulcers?

Mouth ulcers — medically known as aphthous ulcers or canker sores — are small painful sores that develop on the soft tissue inside your mouth, on your cheeks, lips, tongue, or gums. They are extremely common, affecting nearly 20% of the population at some point.

Nutritional deficiencies: Low levels of Vitamin B12, iron, or folic acid are one of the most common causes of recurring mouth ulcers, especially in vegetarians.
Stress and anxiety: Psychological stress directly weakens the immune system's mucosal defences, triggering ulcer outbreaks. Many patients notice ulcers during exam season or work pressure.
Sharp dental edges: A broken tooth, rough filling, or poorly fitted denture can repeatedly injure the soft tissue, creating persistent ulcers at the contact point.
Hormonal changes: Many women experience mouth ulcers around their menstrual cycle due to hormonal fluctuations.
Food sensitivities: Spicy foods, acidic fruits (oranges, pineapple), and certain nuts can trigger ulcers in sensitive individuals.
Toothpaste with SLS: Sodium lauryl sulphate (SLS), a foaming agent in many toothpastes, has been linked to increased ulcer frequency in some people.
Underlying health conditions: Rarely, recurring ulcers can be associated with coeliac disease, Crohn's disease, or immune deficiencies.

⚠️ When to See a Doctor Immediately

Most ulcers are harmless and heal on their own. But certain signs require urgent professional evaluation:

🔴

Ulcer lasting more than 3 weeks

Any ulcer that does not heal within 21 days needs professional assessment to rule out serious conditions.

🔴

Painless ulcer

A painless sore in the mouth can occasionally be a sign of oral cancer and must be evaluated immediately.

🔴

Ulcer larger than 1cm

Unusually large ulcers (major aphthous) require medical treatment and may leave scarring if untreated.

🔴

Fever, difficulty swallowing, or weight loss

Systemic symptoms alongside an ulcer suggest an underlying condition that needs investigation.

How Are Mouth Ulcers Treated at Dr. Barun's?

At Dr. Barun's Dental Centre in Velachery and ECR, our approach to mouth ulcer treatment is thorough — we don't just treat the sore, we investigate why it happened to prevent recurrence.

Diagnosis & Assessment

We examine the ulcer's size, location, duration, and pattern. We check for sharp dental edges, ill-fitting appliances, and other oral causes. Blood tests may be recommended for recurring cases.

Topical Treatment

Prescription-strength topical corticosteroid gels (like Kenacort) reduce inflammation and dramatically speed healing. Combined with an antiseptic chlorhexidine mouthwash, most ulcers heal within 5–7 days.

Laser Therapy (for severe cases)

Low-level laser therapy can instantly reduce the pain of a severe ulcer and halve the healing time. It is painless, takes under 2 minutes, and provides immediate relief.

Addressing the Root Cause

For recurring ulcers, we prescribe Vitamin B12 supplementation, recommend dietary changes, smooth any sharp tooth edges, and adjust dentures if needed. Treating the cause stops the recurrence.

Home Remedies That Actually Work

✦Salt water rinse — Mix 1 tsp salt in warm water, rinse 3x daily. Reduces bacteria and inflammation.
✦Honey application — Apply raw honey directly on the ulcer. Natural antibacterial and soothes pain.
✦Avoid spicy/acidic foods — Until healed, avoid chillies, citrus fruits, and vinegar-based foods.
✦Switch toothpaste — Try an SLS-free toothpaste like Sensodyne or Biotene if you get frequent ulcers.
✦Vitamin B12 supplement — 1000mcg daily has been shown in studies to significantly reduce ulcer frequency.

Home remedies work for mild, occasional ulcers. If ulcers are recurring or severe, please consult our team.

Frequently Asked Questions About Mouth Ulcers

For most mouth ulcers, a dentist is the right first point of contact. A dentist can diagnose the type of ulcer, rule out dental causes, and prescribe topical treatments. If the ulcer is recurring or has not healed in 3 weeks, your dentist may refer you to an oral medicine specialist.

See a doctor immediately if the ulcer has not healed in 3 weeks, is larger than 1cm, is painless, keeps recurring more than 3 times a year, or is accompanied by fever, difficulty swallowing, or weight loss. These can occasionally indicate a more serious underlying condition.

Yes. Dentists are trained to diagnose and treat most mouth ulcers. Treatment options include topical corticosteroids, antiseptic mouthwashes, Vitamin B12 supplements, and in some cases, laser therapy to reduce pain and speed healing.

Common causes include Vitamin B12 or iron deficiency, stress, hormonal changes, food sensitivities (spicy or acidic foods), sharp tooth edges, ill-fitting dentures, and in some cases, underlying health conditions like Crohn's disease or coeliac disease.

Minor mouth ulcers typically heal on their own within 7–14 days. With proper treatment such as topical gels and mouthwashes, healing can be faster. An ulcer that persists beyond 3 weeks requires professional evaluation.

Get Expert Mouth Ulcer Treatment in Chennai

Don't let a persistent mouth ulcer go untreated. Our specialists at Dr. Barun's Dental Centre in Velachery and ECR are experienced in diagnosing and treating all types of oral ulcers — from minor canker sores to complex recurring conditions.

Call +91 781 000 6070 Book Appointment Online

Velachery Branch: No. 1A, Kasthuri Apartments, 7th Main Rd, GKM Colony · ECR Branch: Royal Enclave, Villa B2, Injambakkam

Service Page