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Lining mucosa, nonkeratinized stratified squamous epithelium, found almost everywhere else in the oral cavity, including the: 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 .
The mucosa of the oral cavity provides a unique ecological site for microbiota to inhabit. Unlike the teeth, the mucosa of the oral cavity is frequently shedding and thus its microbial inhabitants are both kept at lower relative abundance than those of the teeth but also must be able to overcome the obstacle of the shedding epithelia. [8]
The buccal mucosa, along with the gingival and sublingual mucosa, is part of the oral mucosa. [15] It is composed of non-keratinised tissue. Unlike intestinal and nasal mucosae, it lacks tight junctions and is instead equipped with loose intercellular links of desmosomes , gap junctions and hemidesmosomes . [ 7 ]
As its Latin name indicates, it is a characteristic component of the mucosa, or the mucosa's "own special layer." Thus, the term mucosa or mucous membrane refers to the combination of the epithelium and the lamina propria. [1] The connective tissue of the lamina propria is loose and rich in cells.
The constant low-level inflammatory reaction in the connective tissue underlying the junctional epithelium also results in the formation of the Gingival Crevicular Fluid (GCF). The Gingival Crevicular Fluid (GCF) is a serum like fluid that is formed from the post capillary venules of the Dentogingival Plexus which is a dense network of blood ...
The clinical importance of the mucogingival junction is in measuring the width of attached gingiva. [1] Attached gingiva is important because it is bound very tightly to the underlying alveolar bone and provides protection to the mucosa during functional use of the structures of the oral cavity during function, such as chewing.
The gingival cavity microecosystem, fueled by food residues and saliva, can support the growth of many microorganisms, of which some can be injurious to health. Improper or insufficient oral hygiene can thus lead to many gum and periodontal disorders, including gingivitis or periodontitis, which are major causes for tooth failure.
The mouth consists of two regions: the vestibule and the oral cavity proper. The vestibule is the area between the teeth, lips and cheeks. [3] The oral cavity is bounded at the sides and in front by the alveolar process (containing the teeth) and at the back by the isthmus of the fauces. Its roof is formed by the hard palate.