Common questions

What is the Dentogingival Junction?

What is the Dentogingival Junction?

The dentogingival junction and periodontal ligament perform unique functions. The former makes a seal where a tooth punctures the integument; the latter, nominally a ligament, cushions the tooth during mastication, while sheltering the delicate cells which remodel the bony socket.

What is sulcular epithelium?

The sulcular epithelium is that epithelium which lines the gingival sulcus. It is apically bounded by the junctional epithelium and meets the epithelium of the oral cavity at the height of the free gingival margin. The sulcular epithelium is nonkeratinized.

What is the function of the junctional epithelium?

At the bottom of the sulcus, there is a specific epithelial structure, junctional epithelium, which, on one hand, plays an active role in the defence against microorganisms by allowing polymorphonuclear leukocytes to migrate through intercellular spaces to the gingival sulcus [58].

What is gingiva made of?

The gingiva is composed of fibrous tissue covered by mucous membrane that is firmly attached to the periosteum of the alveolar processes of the mandible and maxilla. The lower gingiva includes the mucosa covering the mandible from the gingival-buccal gutter to the origins of the mobile mucosa on the floor of the mouth.

What is epithelial attachment?

Epithelial attachment refers to the mechanism of attachment of the junctional epithelium to a tooth or dental implant, i.e., hemidesmosomes. The cells of the epithelium at this attachment point are non-keratinized and form a collar around the tooth around the cemento-enamel junction.

What is Sulcular and junctional epithelium?

The sulcular epithelium lines the gingival sulcus from the base to the free gingival margin. This is where it interfaces with the epithelium of the oral cavity. The junctional epithelium is immediately apical to the base of the pocket, and coronal to the most coronal of the gingival fibers.

What is Sulcular technique?

Bass or Sulcular Technique Place the toothbrush parallel to your teeth with the bristles toward the gums. Tilt the brush to a 45-degree angle and move the bristles slightly under the gumline.

Where does the junctional epithelium start?

Origin. The junctional epithelium comes from the reduced enamel epithelium (REE) during the development of the tooth. This occurs before the tooth erupts and after the enamel matures. The ameloblasts produce a basal lamina on the surface of the tooth which serves as a part of the primary EA.

How is junctional epithelium attached?

The junctional epithelium (JE) is attached to the tooth surface by hemidesmosomes, which constitutes the front-line defense against periodontal bacterial infection.

When does the shift of the dento gingival junction occur?

Shift of the dento gingival junction  The dentogingival junction is an anatomical and functional interface between the gingiva and the tooth structure.  Dento gingival junction is the region where the tooth is attached to gingival and is form as soon as the tooth erupts in the oral cavity.

How is the junctional epithelium attached to the tooth?

It is commonly accepted that the junctional epithelium exhibits several unique structural and functional features that contribute to preventing pathogenic bacterial flora from colonizing the subgingival tooth surface. JE is attached to the tooth by distinct mechanism known as the epithelial attachment apparatus.

Why does the GCF pass through the junctional epithelium?

The GCF passing through the junctional epithelium determines the environmental conditions and provides sufficient nutrients for the DAT cells to grow. At the gingival margin the GCF may become contamined so that agents from the oral cavity and/or the plaque bacteria challenge the most coronal DAT cells.

How does the development of the junctioanal epithelium affect the enamel?

Development of the junctioanal epithelium As the erupting tooth approaches the overlying epithelium, the external cells of the reduced enamel epithelium proliferate, causing the epithelial covering of the enamel to thicken. 9.

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Ruth Doyle