Mouth Ulcers and Canker Sores: Causes, Care, and When to See a Dentist
A small sore inside the mouth can make eating, talking, and even brushing your teeth uncomfortable. Most of these sores are harmless canker sores that heal on their own, but some need a closer look. Here is what usually causes them, how to tell them apart from other conditions, and when it is time to visit a dentist in DLF Phase 4, Gurgaon.
What Are Mouth Ulcers and Canker Sores?
Canker sores, also called aphthous ulcers, are small, round or oval sores that appear on the soft tissue inside the mouth, such as the inner cheeks, lips, or under the tongue. They are usually white or yellow with a red border and can cause a burning or stinging feeling, especially when eating.
These sores are different from cold sores, which appear on or around the lips and are caused by the herpes simplex virus. Cold sores are contagious, while canker sores are not.
Common Causes of Mouth Ulcers
Canker sores usually do not have one single cause. Some common triggers include:
- Minor injury from biting the cheek, a sharp tooth edge, or hard food
- Stress or lack of sleep
- Hormonal changes, especially in women
- Certain foods, including citrus fruits, tomatoes, and spicy dishes
- Nutritional gaps, such as low vitamin B12, iron, or folate
- Sodium lauryl sulfate, an ingredient found in some toothpastes
- Ill-fitting dentures, braces, or dental appliances that rub against soft tissue
Some people are simply more prone to recurring canker sores due to family history or a sensitive immune response.
How to Tell Them Apart From Other Conditions
Not every sore in the mouth is a simple canker sore. Here is a quick comparison to help you understand what you might be dealing with.
| Condition | Location | Key Features |
|---|---|---|
| Canker sore | Inner cheeks, lips, under tongue | Round, white or yellow centre, red border, not contagious |
| Cold sore | Outer lip, around mouth | Fluid-filled blisters, contagious, often follows a tingling feeling |
| Oral thrush | Tongue, inner cheeks, roof of mouth | White patches that can be wiped off, sometimes sore underneath |
| Traumatic ulcer | Where a sharp tooth or appliance rubs | Matches the shape of the irritant, heals once the cause is removed |
If a sore does not fit these patterns, or if it looks unusual, it is best to have it examined rather than guess.
Home Remedies That Can Help
Most canker sores heal on their own within one to two weeks. In the meantime, these steps can ease discomfort:
- Rinse gently with warm salt water two to three times a day
- Avoid spicy, acidic, or very hot foods until it heals
- Use a soft-bristled toothbrush to avoid further irritation
- Apply an over-the-counter oral gel meant for mouth ulcers, if needed
- Stay hydrated and eat a balanced diet
If you notice a sharp tooth edge, filling, or denture that keeps rubbing the same spot, that is worth mentioning to your dentist even if the ulcer itself heals.
When to See a Dentist in Gurgaon
While most mouth ulcers are harmless, some signs suggest it is time to get a professional opinion. Consider a dental visit if:
- A sore has not healed after two to three weeks
- You get canker sores very frequently or several at once
- The sore is unusually large or keeps growing
- You have fever, swollen glands, or feel generally unwell along with the sore
- The ulcer is caused by a sharp tooth, filling edge, or ill-fitting denture
- You notice unexplained white or red patches that do not go away
A dentist can identify whether the cause is something simple, like a rough tooth surface, or something that needs further evaluation. At EXL Dentists in DLF Phase 4, Gurgaon, we take a careful look at the sore, check your bite and any dental appliances, and guide you on the right next step, whether that is a simple fix or a referral for further tests.
A Quick Note on Persistent Sores
Sores that linger beyond three weeks, do not follow the usual healing pattern, or come with other symptoms should never be ignored. While the vast majority of mouth ulcers are minor and temporary, a dental check helps rule out anything that needs closer attention and gives you peace of mind.
Have questions about your teeth?
EXL Dentists · Galleria Boulevard, DLF Phase IV, Sector 43
Frequently asked questions
How long should a mouth ulcer take to heal?
Most canker sores heal within 7 to 14 days on their own. If a sore lasts longer than two to three weeks, it needs to be checked by a dentist.
Are mouth ulcers contagious?
No, common canker sores are not contagious. Cold sores caused by the herpes virus are different and can spread through contact.
Can stress really cause mouth ulcers?
Yes, stress and lack of sleep are commonly linked to flare-ups of canker sores, though the exact reason is not fully understood.
What foods should I avoid when I have a mouth ulcer?
Spicy, acidic, salty, and very hot foods can irritate an ulcer further. Soft, bland foods are easier to manage while it heals.
Treatment costs mentioned on this page are indicative ranges for the DLF Phase 4, Gurgaon region. Your exact cost depends on your case and will be confirmed after a clinical examination at the clinic.