Mouth Ulcers: Common Causes, Home Remedies, and When to See a Dentist

Mukand Dental Care · Sector 37, Faridabad · Updated 2026-09-04

Almost everyone in Sector 37, Faridabad has dealt with a mouth ulcer at some point, that small, painful sore on the inside of the cheek, lip, or tongue that makes eating and talking uncomfortable. While most mouth ulcers are harmless and heal on their own, understanding what causes them can help you prevent repeat outbreaks and know when it is time to visit a dentist.

What Causes Mouth Ulcers

Mouth ulcers, also called canker sores, are small round or oval sores with a white or yellow centre and a red border. They are not contagious and are different from cold sores, which are caused by a virus. Common triggers include:

• Accidental cheek or tongue bite while eating or talking
• Sharp edges on a broken tooth, filling, or braces wire
• Eating very spicy, acidic, or hard foods
• Stress, tiredness, or hormonal changes
• Vitamin B12, iron, or folate deficiency
• Sensitivity to certain toothpaste ingredients, especially sodium lauryl sulphate
• Minor injury from a toothbrush or dental tool

In some cases, ulcers can also be linked to underlying conditions such as acid reflux, gut issues, or a weakened immune system, especially if they occur frequently or in clusters.

When Mouth Ulcers Are Harmless

Most mouth ulcers fall into the harmless category and do not need special dental treatment. Signs that an ulcer is likely a simple canker sore include:

• It is smaller than a pencil eraser
• It heals within 7 to 10 days without scarring
• You get one or two at a time, not a large cluster
• There is no fever or swollen lymph nodes alongside it

These ulcers are uncomfortable but not dangerous, and gentle home care is usually enough to manage the pain while they heal.

Home Remedies for Relief

You can ease discomfort and speed up healing with a few simple steps at home:

• Rinse gently with warm salt water two to three times a day
• Apply a small amount of milk of magnesia or a soothing oral gel directly on the ulcer
• Avoid spicy, salty, or acidic foods until it heals
• Use a soft bristled toothbrush to avoid further irritation
• Suck on ice chips to numb the area if it is very painful
• Try over the counter numbing gels available at any pharmacy

Sticking to bland, soft foods like curd, khichdi, and soups for a few days can also make eating more comfortable while the ulcer heals.

When to See a Dentist

While home care works for most ulcers, some cases need professional attention. Visit a dentist if you notice:

• An ulcer that lasts longer than two to three weeks
• Very large or unusually painful sores
• Ulcers that keep coming back frequently
• A sharp tooth, filling edge, or denture that keeps causing sores
• Bleeding, difficulty swallowing, or fever alongside the ulcer

At Mukand Dental Care, we first check for any physical cause, such as a rough tooth edge, ill fitting denture, or braces wire poking into the cheek. Correcting these small issues often stops repeat ulcers from happening. If the ulcer looks unusual or does not heal as expected, further evaluation may be recommended to rule out other causes.

Dental Treatments for Persistent Ulcers

For ulcers that do not respond to home care, a dentist may suggest:

• Smoothing a sharp tooth or filling that is causing repeated injury
• Adjusting a denture or orthodontic appliance that rubs against soft tissue
• Prescription strength gels or mouth rinses for faster healing
• Checking for nutritional deficiencies through a simple blood test referral
• Reviewing your toothpaste or mouthwash if it seems to trigger sores

Preventing Future Mouth Ulcers

Simple daily habits can reduce how often ulcers appear:

• Use a soft bristled toothbrush and brush gently
• Switch to a mild, sodium lauryl sulphate free toothpaste if you are prone to ulcers
• Eat a balanced diet with enough iron, folate, and vitamin B12
• Manage stress with regular sleep and relaxation habits
• Get regular dental check ups to catch sharp edges or ill fitting appliances early

If mouth ulcers are a regular problem for you, the team at Mukand Dental Care in Devi Sahai Market, Sector 37, Faridabad can help identify the cause and suggest a plan to keep them from coming back.

Treatment costs mentioned on this page are indicative ranges for the Sector 37, Faridabad region. Your exact cost depends on your case and will be confirmed after a clinical examination at the clinic.