Oral Scars: Is Your Mouth Sore Just a Scar? - Dentistry

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Mouth ulcers leaving scars?


Previously, I had a large and deep mouth ulcer that took two weeks to heal.
Now, there is a scar in my mouth that is white, flat, and not painful to the touch.
It feels smooth when I touch it with my tongue.
I would like to know if this is a scar.
I am worried that it might be leukoplakia, as I did not have any scarring from smaller ulcers before.

Miss Chen, 20~29 year old female. Ask Date: 2023/03/12

Dr. Lin Jiayong reply Dentistry


Hello: It is recommended to have a physician conduct a physical examination.
If necessary, a biopsy or blood tests to check relevant indices may be performed.

Reply Date: 2023/03/12

More Info


When it comes to oral health, the presence of scars or lesions in the mouth can often lead to anxiety, especially when there is a history of ulcers or sores. Based on your description, it sounds like you have a white scar in your mouth that is flat, smooth, and not painful to the touch. This is a good sign, as it suggests that the area is healing properly. However, it’s understandable to be concerned about the possibility of leukoplakia or other conditions that can present as white patches in the oral cavity.

Oral scars can form after an ulcer or sore has healed. The healing process can sometimes leave behind a white or lighter-colored area, which is typically a result of the regeneration of the epithelial tissue. This scar tissue may appear different from the surrounding mucosa, but it is usually benign, especially if it is not raised, painful, or changing in appearance.

Leukoplakia, on the other hand, is a condition characterized by white patches in the mouth that cannot be easily wiped away. It can be a sign of irritation, often due to factors such as tobacco use, chronic irritation from dental appliances, or even certain infections. While leukoplakia itself is not cancerous, it can sometimes be associated with precancerous changes, which is why it is important to monitor any changes in the mouth.

Given your history of significant ulcers and the current state of your oral health, it is advisable to keep an eye on the scar. If it remains stable and does not change in size, color, or texture, it is likely just a scar. However, if you notice any changes, such as increased size, pain, or if it becomes raised, it would be prudent to consult with a healthcare professional, such as a dentist or an oral surgeon, for a thorough examination.

In addition to monitoring the scar, maintaining good oral hygiene is crucial. This includes regular brushing and flossing, as well as using an antimicrobial mouthwash to help prevent infections and promote healing. Staying hydrated and avoiding irritants, such as spicy foods or tobacco, can also aid in maintaining oral health.

If you are still concerned about the scar being something more serious, a biopsy can be performed to rule out any pathological conditions. This is a straightforward procedure where a small sample of the tissue is taken and examined microscopically. It can provide peace of mind and ensure that any potential issues are addressed promptly.

In summary, while it is likely that the white area in your mouth is a benign scar from previous ulcers, it is essential to monitor it for any changes. Regular dental check-ups can also help in early detection of any issues. If you have persistent concerns, do not hesitate to seek professional advice for a comprehensive evaluation. Your oral health is important, and addressing any worries you have is a key part of maintaining it.

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