Differences between Fenestration and Dehiscence

To understand the differences first let us know about What is Fenestration and What Dehiscence:

Definition of Tooth Fenestration:

Fenestration are Isolated areas in which root is denuded of bone and root surface is covered only by periosteum and overlying gingiva is called as fenestration. Make a note that Marginal Bone is intact in Fenestration

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.

Dehiscence and Fenestration

Difference between Fenestration and Dehiscence:

The only and main difference is that

  • Fenestration the “Marginal Bone is Intact”
  • Dehiscence the “Denuded areas extend through the Marginal Bone”

Common Features of Dehiscence and Fenestration:

  1. Dehiscence and Fenestration occur approximately in 20% of teeth:
  2. More common on the Facial bone than on the Lingual Bone
  3. More common in the Anterior teeth than on the posterior teeth
  4. Mostly Bilateral

Predisposing factors of Dehiscence and Fenestration:

  • Prominent root contours
  • Malpositioning of teeth
  • Labial protrusion of root
  • Thin bony plates

 

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