Mucogingival junction

Mucogingival Junction

The Mucogingival Junction (pronunciation: myoo-koh-jin-jih-vuhl junc-shun) is a term used in dentistry to describe the boundary area where the mucosa of the cheeks and lips meet the gingiva (gums) around the teeth.

Etymology

The term "Mucogingival Junction" is derived from the combination of two words: "mucosa" and "gingiva". "Mucosa" is a Latin term meaning "mucous membrane", while "gingiva" is also a Latin term meaning "gum".

Definition

The Mucogingival Junction is an anatomical landmark in the oral cavity. It is the line of demarcation between the firm, pink, keratinized gingival tissue (gum tissue) and the softer, non-keratinized alveolar mucosa. This junction is easily identifiable in the mouth as it is where the pink gum tissue meets the redder, shinier tissue of the alveolar mucosa.

Clinical Significance

The Mucogingival Junction plays a significant role in periodontal health. It serves as a barrier to the spread of periodontal disease and is a critical factor in the success of periodontal surgery. The position of the Mucogingival Junction can also affect the aesthetics of a person's smile, particularly in cases where there is gum recession.

Related Terms

Gingiva: The part of the oral mucosa that covers the alveolar processes of the jaws and surrounds the necks of the teeth.
Alveolar Mucosa: The soft, non-keratinized tissue that lines the alveolar ridge and the floor of the mouth.
Periodontal Disease: A group of conditions that affect the supporting structures of the teeth, including the gingiva, periodontal ligament, and alveolar bone.
Periodontal Surgery: A type of dental surgery performed to treat periodontal disease or to correct other issues related to the periodontium.