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Classification of Intraosseous Defects
Intraosseous Defects

Intraosseous Defects

In periodontics a bone defect is a cavity or deformation of the alveolar bone involving one or more teeth. Bone surgery is a general term for procedures aimed at modification and elimination of defects and deformities of bone surrounding the teeth.

Rational approach to bone surgery should be based on the correct diagnosis and morphological classification of the defects. Thus, it is important for the dentist to determine the structure of bone defects as accurately as possible.

Periodontal pockets, the bottom of which is located apically to the crest of the alveolar bone, are called intraosseous defects. The classification of such defects is based upon the number of bone walls.

  • Three-wall defect. Three-wall intraosseous defects are most common in the interdental space. There are left vestibular, oral and proximal bone walls. Three-wall defects can be formed from the vestibular or oral side in the form of a gutter.
  • Two-wall defect. The most frequent bone defect, which is usually in the form of a crater or interdental crater.
  • One-wall defect. One-wall defect is most often found in the interdental space.
  • Combined defect. A large number of bone lesions look like a combination of one-wall, two-wall or three-wall defects.

Submitted: January 27th, 2015 in category: Articles

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