About Mouth Ulcers
Mouth ulcers constitute painful lesions that can be located in the mouth in various areas, such as the cheeks, tongue, lips, and gums. Most of these cases heal within 1 to 2 weeks but the severe cases among them tend to reoccur and reappear thus necessitating check-ups regularly. At Smylo Dental in Greater Noida West, our dentists examine the ulcer, look for the cause and plan treatment for faster, more comfortable healing. Patients visit us from Greater Noida West, Noida Extension, Techzone-4, Gaur City.
Oral ulcer symptoms: what to look for
Common oral ulcer symptoms include:
- A round or oval sore with a white or yellow centre and a red border
- Burning, tingling or stinging a day or two before the sore appears
- Pain while eating, drinking, brushing or talking, especially with spicy, salty or sour food
- One ulcer or a cluster of small ulcers on the inner cheek, lip, tongue, gums or floor of the mouth
- Sometimes mild swelling nearby, and in bigger outbreaks tiredness or swollen glands under the jaw
Symptoms that need a dentist soon: an ulcer lasting more than 2-3 weeks, bleeding, hardening, a lump, or a white or red patch that does not go away.
Types of mouth ulcers
| Type | What it looks like | Usual healing time |
|---|---|---|
| Minor aphthous ulcer | Small, under 1 cm, single or a few | About 1-2 weeks |
| Major aphthous ulcer | Larger (over 1 cm), deeper, very painful | Can take several weeks and may leave a scar |
| Herpetiform ulcers | Clusters of many tiny ulcers | About 1-2 weeks |
Non-infective mouth ulcers: causes and how they differ
Non-infective mouth ulcers are not caused by a virus, bacteria or fungus, so they are not contagious. You cannot catch them by kissing or sharing food. Common non-infective causes are:
- Injury: accidental cheek bite, a sharp or broken tooth, rough filling, braces wire, ill-fitting denture, hot food
- Recurrent aphthous ulcers (canker sores): repeat ulcers linked to stress, hormonal changes and food sensitivities
- Nutritional gaps: low iron, vitamin B12 or folate
- Medicines and toothpaste: some medicines and toothpastes containing sodium lauryl sulfate can irritate the mouth lining
- Health conditions: celiac disease, Crohn's disease, Behcet's disease and some blood disorders
Infective ulcers are different. Cold sores (herpes simplex virus) appear on the lip border and are contagious. Hand, foot and mouth disease and oral thrush (a fungal infection) also cause mouth sores. A dentist can tell these apart with a simple examination, which matters because the treatment is different.
Severe mouth ulcers: when to get treatment
An ulcer is considered severe when it is larger than 1 cm, appears in groups, lasts more than 2 weeks, comes back 3 or more times a month, or makes it hard to eat, drink, swallow or speak. Fever, weight loss, a lump in the neck or bleeding with an ulcer also need quick attention. Severe and recurring ulcers often have a cause behind them, such as a sharp tooth edge, nutritional deficiency or an underlying health condition, so treating only the pain is not enough.
Treatment Process
Dental Examination
The dentist will look at the ulcer to determine its size and location, severity and the possible causes of the ulcer, like injuries, certain infections, or lack of nutrients.
Pain Relief & Medication
The dentist may prescribe medications like gels, antiseptic mouthwashes, and creams which would ease the pain and get rid of the ulcer.
Healing & Prevention
Make sure that you are maintaining oral hygiene, avoiding spicy or acidic food, and drinking enough water, because most of the oral ulcers heal on their own in a week or two but the chronic ones should be reported to the dentist.
Home care while the ulcer heals
- Use warm salt water to rinse your mouth 2-3 times each day.
- Give up spicy foods and foods containing citrus juices, salty foods and worst foods as long as you experience discomfort.
- Make sure to keep the area clean using a soft enough toothbrush and mild toothpaste.
- Drink enough water and eat a healthy diet as recommended.
- Do not use alcohol, iodine or any other strong substance on the ulcer.
Home care eases symptoms but does not fix the underlying cause of repeated ulcers.
Frequently Asked Questions
Common questions about Mouth Ulcers at Smylo Dental.
Mouth ulcers are painful, shallow sores that form on the soft tissue inside the mouth, inner cheeks, lips, gums, tongue, or floor of the mouth. The most common type (aphthous ulcers/canker sores) is triggered by minor trauma, nutritional deficiencies (B12, iron, folate), stress, hormonal changes, or food sensitivities. They are not contagious and typically heal in 7–14 days.
Warm salt water rinses (2-3 times daily) reduce bacterial load and promote healing. Applying honey, pure aloe vera gel, or OTC benzocaine gel provides topical pain relief. Avoiding acidic, spicy, and rough-textured foods prevents further irritation. These measures manage symptoms but do not address underlying nutritional or immune causes of recurring ulcers.
Recurrent aphthous stomatitis (RAS) is strongly associated with B12, iron, or folate deficiency, Celiac disease, Crohn’s disease, SLE, hormonal fluctuations (particularly in women), and psychological stress. If you experience 3+ ulcers per month, clusters of small ulcers, or ulcers larger than 1 cm, investigation by a Smylo Dental oral physician or physician is warranted.
Mouth ulcers appear inside the mouth, are not infectious, and are not caused by a virus. Cold sores are caused by herpes simplex virus type 1 (HSV-1), appear on the lip border or skin around the mouth, are highly contagious, form fluid-filled blisters before crusting, and tend to recur in the same spot. A dentist can clinically differentiate the two during an examination.
Treatment for mouth ulcers depends on the underlying cause, severity, and how long the ulcer has been present. Dentists at Smylo Dental first perform a detailed clinical examination to identify possible triggers such as irritation from sharp teeth, nutritional deficiencies, stress, infections, or underlying medical conditions. Based on the diagnosis, appropriate medications, medicated mouth rinses, dietary guidance, or other supportive treatments may be recommended to reduce pain and promote faster healing. For severe or recurring ulcers, advanced options like laser therapy may also be advised for quicker relief and improved healing.
Avoid citrus fruits (oranges, lemons), tomatoes, pineapple, vinegar-based foods, spicy curries, very salty foods, crunchy textures (crisps, toast, raw vegetables), and carbonated drinks. These all irritate the ulcer surface and delay healing. Opt for soft, bland, room-temperature foods until the ulcer has fully re-epithelialised.
Most mouth ulcers heal on their own within 1–2 weeks. However, you should see a dentist if an ulcer lasts longer than 3 weeks, keeps coming back frequently, becomes unusually large, bleeds easily, or causes difficulty while eating, swallowing, or speaking. Ulcers associated with unexplained weight loss, a lump in the neck, or patches inside the mouth should also be evaluated promptly. Dentists at Smylo Dental carefully examine persistent ulcers to rule out underlying conditions, including early signs of oral cancer, where early detection is extremely important.
Yes, both are among the most common modifiable triggers. Psychological stress suppresses immune function and elevates cortisol, disrupting normal mucosal repair. Deficiencies in B12, iron, and folate impair the proliferation of oral epithelial cells that maintain mucosal integrity. Supplementing identified deficiencies and managing stress through sleep and exercise significantly reduces recurrence frequency.
A painful round or oval sore with a white or yellow centre and red edge, often preceded by burning or tingling, and pain while eating or talking. Some people have one ulcer, others a cluster.
They are ulcers not caused by a virus, bacteria or fungus. Injury, canker sores, nutritional deficiency, stress, some medicines and certain health conditions are common causes. They are not contagious.
Non-infective mouth ulcers are not contagious. Cold sores on the lips are caused by a virus and are contagious. A dentist can tell them apart.
One larger than 1 cm, several at once, one that lasts over 2 weeks, frequent repeats, or any ulcer that stops you from eating or speaking comfortably.
Most minor ulcers heal in 1-2 weeks. Major ulcers can take longer. See a dentist if an ulcer lasts more than 3 weeks.
Rarely. A single ulcer that does not heal in 3 weeks, bleeds, feels hard, or sits on or under the tongue should be examined promptly.
Yes. Our clinic is in Techzone-4, Greater Noida West, and we treat patients from Noida Extension, Greater Noida, Noida and nearby areas.
Rinse with warm salt water, avoid spicy and acidic food, and use a protective or numbing gel if suitable for you. If the pain is severe or ulcers keep returning, book a dental check-up.
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