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F) Free gingival margin G) Gingival sulcus H) Principal gingival fibers I) Alveolar crest fibers of the periodontal ligament (PDL) J) Horizontal fibers of the PDL K) Oblique fibers of the PDL . In dental anatomy, the gingival sulcus is an area of potential space between a tooth and the surrounding gingival tissue and is lined by sulcular ...
A diagram of the periodontium. The crown of the tooth is covered by enamel (A). Dentin (B). The root of the tooth is covered by cementum. C, alveolar bone. D, subepithelial connective tissue. E, oral epithelium. F, free gingival margin. G, gingival sulcus. H, principal gingival fibers. I, alveolar crest fibers of the periodontal ligament (PDL ...
In theory, gingival fibers are the protectors against periodontitis, as once they are breached, they cannot be regenerated.When destroyed, the gingival sulcus (labelled G in the diagram) increases in depth apically, allowing more debris and bacteria to remain in intimate contact with the delicate sulcular and junctional epithelia for longer times.
The EA is very strong in a healthy state, acting as a type of seal between the soft gingival tissue and the hard tooth surface. The deepest layer of the JE, or basal layer, undergoes constant and rapid cell division, or mitosis. This process allows a constant coronal migration as the cells die and are shed into the gingival sulcus.
Probing depth is defined as the distance between the gingival margin and the base of the periodontal pocket, serving as a fundamental parameter in periodontal assessment.In healthy gingiva, probing depths are generally ≤3 mm. However, in the presence of gingival inflammation, probing depths exceed 3 mm, indicating potential periodontal disease.
Using the mucogingival junction as the boundary demarcating the apical border of the attached gingiva, a periodontal probe is inserted into the gingival sulcus to measure how much of the keratinized gingiva coronal to the mucogingival junction is in fact attached to the underlying bone. The depth of the gingival sulcus, determined by the depth ...
The junctional epithelium is a collar-like band that lies at the base of the gingival sulcus and surrounds the tooth; it demarcates the areas of separation between the free and attached gingiva. The junctional epithelium provides a specialized protective barrier to microorganisms residing around the gingival sulcus. [ 4 ]
The alveolar bone (C) is surrounded for the most part by the subepithelial connective tissue of the gingiva, which in turn is covered by the various characteristic gingival epithelia. The cementum overlaying the tooth root is attached to the adjacent cortical surface of the alveolar bone by the alveolar crest (I) , horizontal (J) and oblique (K ...