In dentistry, the term is used to describe an entirely different process: the loss of alveolar bone on the front side of the tooth. This results in the appearance of an oval-shaped root-exposed defect underneath the gingiva. This condition is characterized by the degradation of alveolar bone, gum recession, and exposure of the tooth root.

Definition of Tooth Dehiscence: Dehiscence are isolated areas in which root is denuded of bone and root surface is covered by periosteum and overlying gingiva but the denuded are extends through the Marginal Bone.

Bone dehiscence is a serious dental condition that affects more than just the way your teeth look. Sometimes confused with dental fenestration, bone dehiscence affects the length of the bony aspect of the tooth.

The alveolar margin is the line that demarcates the part of the tooth you can see and the part that is covered by the gums. When root exposure begins from this margin till at least at depth of 4 mm, such a defect is called dehiscence. Dehiscence literally refers to splitting or peeling of an organ. These defects are commonly seen in the lower jaw.

Gingival dehiscence is a condition where the bone of the tooth wears away below the gumline, exposing the root. The outline of the root appears like a cylinder, protruding beneath the gumline. This occurs most frequently on the facial surface of the tooth (the surface that faces forward).