Roughness in Oral Mucosa: Causes and Concerns - Dentistry

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The mucosa feels gritty when licked?


Hello Doctor: I usually do not smoke or chew betel nut, but recently I noticed a small area on the right side of my mouth that feels particularly rough when I touch it with my tongue.
When I shine a flashlight on it, the color looks normal without any white or red spots.
Upon closer inspection, it seems to have a grainy texture compared to other areas.
Could you please explain why this might be happening? I read online that roughness in the mouth can be a bad sign; does this count as roughness? What does it mean for the mouth to become rough? I hope you can clarify this for me.
Thank you.

Xiao Xiao de Wenti, 20~29 year old female. Ask Date: 2021/10/17

Dr. Lin Jiayong reply Dentistry


Hello: If there is a family history of cancer, it is recommended to have regular examinations of the oral mucosa, regardless of whether there are any harmful habits.
A rough sensation is mostly observed in patients who chew betel nut, as the mucosa is repeatedly irritated by fibers and chemicals, leading to precancerous lesions such as leukoplakia and erythroplakia.
Additionally, the inner edges of both cheeks, the underside of the tongue, and the margins of the tongue are often overlooked areas, so it is advised to observe them carefully.
Sincerely, Lin Chia-Yung, Department of Dentistry, Taichung Hospital, Ministry of Health and Welfare.

Reply Date: 2021/10/17

More Info


The roughness you are experiencing in your oral mucosa can be concerning, especially since it is a change from your normal oral health. While you have mentioned that you do not smoke or chew betel nuts, which are common irritants that can lead to changes in the oral mucosa, there are several other potential causes for the rough texture you are noticing.

First, it is essential to understand what "roughness" in the oral mucosa means. The oral mucosa is the moist tissue lining the mouth, and it can undergo changes due to various factors, including irritation, inflammation, or infection. Roughness can manifest as a change in texture, where the normally smooth surface becomes uneven or bumpy. This can be due to several reasons:
1. Irritation or Trauma: Sometimes, roughness can result from minor trauma to the oral mucosa, such as biting the inside of your cheek or irritation from dental appliances. This can lead to localized inflammation and changes in texture.

2. Infections: Fungal infections, such as oral thrush (candidiasis), can cause changes in the mucosa, leading to a rough texture. This condition is often accompanied by white patches, but in some cases, it may present as a change in texture without significant discoloration.

3. Allergic Reactions: Allergies to certain foods, medications, or dental products can lead to changes in the mucosa. This may present as roughness, swelling, or other alterations in texture.

4. Nutritional Deficiencies: Deficiencies in certain vitamins and minerals, particularly B vitamins, can lead to changes in the oral mucosa. This may result in a rough texture or other symptoms such as soreness or ulcers.

5. Autoimmune Conditions: Conditions such as lichen planus or pemphigus vulgaris can cause changes in the oral mucosa, leading to roughness. These conditions often require a biopsy for diagnosis and may present with other symptoms.

6. Oral Cancer: Although less common, persistent changes in the oral mucosa, especially if accompanied by other symptoms such as pain, difficulty swallowing, or changes in taste, should be evaluated to rule out malignancy.

Given that you have observed this change recently, it is advisable to monitor the area for any additional symptoms, such as pain, swelling, or changes in color. If the roughness persists or worsens, it is crucial to seek a professional evaluation from a dentist or an oral specialist. They may perform a thorough examination, possibly including imaging or a biopsy, to determine the underlying cause of the roughness.

In summary, while roughness in the oral mucosa can be benign and related to minor irritations, it can also indicate more serious conditions. It is essential to pay attention to any accompanying symptoms and consult a healthcare professional for a comprehensive evaluation. Early diagnosis and treatment can help address any underlying issues and ensure your oral health remains optimal.

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