What is a junctional epithelium?

The junctional epithelium (JE) is an epithelial component that is directly attached to the tooth surface and has a protective function against periodontal diseases. In this study, we determined the origin of the JE using a bioengineered tooth technique.

What is the junctional epithelium made of?

The junctional epithelium is made up of mostly flattened epithelial cells that are layered on a basal membrane; only one layer is attached to this basal membrane, and the others adhere to one another.

Why is junctional epithelium important?

The junctional epithelium is located at a strategically important interface between the gingival sulcus, populated with bacteria, and the periodontal soft and mineralized connective tissues that need protection from becoming exposed to bacteria and their products.

What type of epithelium is junctional epithelium?

nonkeratinized stratified squamous epithelium
The junctional epithelium, a nonkeratinized stratified squamous epithelium, lies immediately apical to the sulcular epithelium, which lines the gingival sulcus from the base to the free gingival margin, where it interfaces with the epithelium of the oral cavity.

How is long junctional epithelium formed?

Connective tissue is destroyed during periodontal disease, and the junctional epithelium therefore extends until it reaches intact connective tissue that provides the signal to stop its migration, forming a long junctional epithelium.

How many cells make up the junctional epithelium?

In addition, the JE is thinner than the sulcular epithelium, and ranges from only 15 to 30 cells thick at the floor of the gingival sulcus. It then tapers to a thickness of 3 to 4 cells at its apical part. The superficial cells of the JE serve as part of the EA of the gingiva to the tooth surface.

How long does it take junctional epithelium to form?

Coronal migration of the epithelium from that level accounted for most of the lengthening of the junctional epithelium observed in 3 weeks. During the balance of the experimental period the junctional epithelium did not change in length significantly.

Where is the junctional epithelium?

gingival sulcus
The junctional epithelium (JE) is the epithelium that is located at the base of the gingival sulcus. A calibrated periodontal probe is used to measure the probing depth of the gingival sulcus.

Where can junctional epithelium be found?

The junctional epithelium is the epithelium which is located at the base of the gingival sulcus.

Is junctional epithelium non-Keratinized?

JE is classified as non-keratinized stratified squamous epithelium.

What is the difference between gingivitis and periodontitis?

Gingivitis and Periodontitis are both types of periodontal disease. The key difference though is that gingivitis is reversible, while periodontitis is not. This is because periodontitis involves bone loss, which cannot be recovered.