Oral mucosa
The oral mucosa is the mucous membrane lining the inside of the mouth and consists of stratified squamous epithelium termed oral epithelium and an underlying connective tissue termed lamina propria. The oral cavity has sometimes been described as a mirror that reflects the health of the individual. Changes indicative of disease are seen as alterations in the oral mucosa lining the mouth, which can reveal systemic conditions, such as diabetes or vitamin deficiency, or the local effects of chronic tobacco or alcohol use.
Classification
It can be divided into three main categories based on function and histology:
Masticatory mucosa, keratinized stratified squamous epithelium, found on the dorsum of the tongue, hard palate and attached gingiva.
Lining mucosa, nonkeratinized stratified squamous epithelium, found almost everywhere else in the oral cavity, including the:
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Buccal mucosa refers to the inside lining of the cheeks and is part of the lining mucosa.
- Labial mucosa refers to the inside lining of the lips and is part of the lining mucosa.
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Alveolar mucosa refers to the mucosa between the gums and the buccal/labial mucosa.