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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 ...
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.
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.
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.
The gingival margin (F) is the most coronal point of the gingiva, depicted as the zenith of the pink hill in this diagram. To the left lies the sulcular epithelium within the gingival sulcus (G) , and to the right lies the oral epithelium (E) .
The gingival sulcus (G) is bounded by the enamel (A) of the crown of the tooth and the sulcular epithelium. The sulcular epithelium is that epithelium which exists on the sulcular side of the free gingival margin (F). The oral epithelium (E) exists on the other side of the free gingival margin.
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 ]