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In dentistry, the linea alba (from Latin 'white line') [1] is a horizontal streak on the buccal mucosa (inner surface of the cheek), level with the occlusion (biting plane). ). It usually extends from the commissure to the posterior teeth, and can extend to the inner lip mucosa and corners of the mo
Alveolar mucosa, the lining between the buccal and labial mucosae. It is a brighter red, smooth, and shiny with many blood vessels, and is not connected to underlying tissue by rete pegs. [6] Buccal mucosa, the inside lining of the cheeks; part of the lining mucosa. Labial mucosa, the inside lining of the lips; part of the lining mucosa. [7]
There is a diffuse, gray-white, milky opalescent appearance of the mucosa which usually occurs bilaterally on the buccal mucosa. Less often, the labial mucosa, the palate or the floor of mouth may be affected. The surface of the area is folded, creating a wrinkled, white streaked lesion. [2]
The lesions are located on the mucosa, usually bilaterally in the central part of the anterior buccal mucosa and along the occlusal plane level (the level at which the upper and lower teeth meet). Sometimes, the tongue or the labial mucosa (the inside lining of the lips) is affected by a similarly produced lesion, termed morsicatio linguarum ...
Biopsies of the lesions show hypertrophied stratified squamous mucosa with glycogen deposition in the mucosa. [1] Clinically, mild glycogenic acanthosis is a normal finding, and does not progress to esophageal cancer or to stricture. [4] It is not related to leukoplakia, and is not dysplastic or premalignant.
a. Early lesions, blanching of the oral mucosa; b. Older lesions, vertical and circular palpable fibrous bands in and around the mouth or lips, resulting in a mottled, marble-like appearance of the buccal mucosa; Stage 3: Sequelae of oral submucous fibrosis a. Leukoplakia; b. Speech and hearing deficits
It therefore has the appearance of a sharp line between the coloured edge of the lip and adjoining skin. [4] It has been described as a pale, white rolled border and also as being a red line. [1] [5] This fine line of pale skin accentuates the colour difference between the vermilion and normal skin.
Leukoplakia cannot be rubbed off the mucosa, [14] distinguishing it readily from white patches such as pseudomembraneous candidiasis, where a white layer can be removed to reveal an erythematous, sometimes bleeding surface underneath. The white color associated with leukoedema disappears when the mucosa is stretched.