Normal gums are closely connected with crowns. When probing with a probe, a natural shallow groove with a depth of 0.5~2 mm can be found between the gum and the crown, which is called gingival sulcus.

If the gums are attacked by bacteria or mechanically stimulated, the gums will become inflamed, proliferate in the direction of the crown, and the gingival margin will expand, forming a gingival pocket.

Gingival sulcus is full of inflammatory products, which destroys the combination of gingiva and crown, deepens gingival sulcus, separates gingiva from crown, and forms a blind pocket between them, which is periodontal tissue.

Etiology of extended data packets

Clinical periodontal pockets often include the above two situations, that is, because the gingival margin extends to the crown and the groove bottom extends to the root. Periodontal pocket is formed by the long-term chronic gingivitis spreading to the deep.

A large number of neutrophils infiltrate, which will seriously affect the nutrition and adhesion of epithelial cells, make the gingival sulcus bottom move to the root, and form periodontal pocket. With the deepening of periodontal pocket, it is more conducive to the accumulation and retention of dental plaque, which makes the inflammation more serious, and the inflammatory reaction makes the periodontal pocket deeper, thus forming a vicious circle of progressive destruction of periodontal pocket.

reference data

Baidu periodontal pocket encyclopedia