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Chapter 8: Periodontitis and other periodontal Conditions (Pathogenesis of…

- - - - The advanced lesion is a characteristic of periodontitis
    - - subsequent alveolar and supporting bone loss
        
        permits extension of sub gingival plaque on the root surface
- - - - junctional epithelium migrates apically only as a result of the destruction of the gingival collagen fibers
        
        increases periodontal pocket depth; ideal for plaque accumulation making it difficult to clean
    - - two types of pockets
        
        suprabony : JE is coronal to the crest of the bone
        
        infrabony: JE Is apical to the crest of the bone
    - - extensive root planning may not be warranted because the endotoxins were found to be very superficial and not embedded deeply into the cementum.
  - - - bone loss involves the inflammatory cells including PMNs, and macrophages
    - - can stimulate PGE2 production
  - - - degree of bone loss is not necessarily correlated with the depth of periodontal pockets
  - - - most vertical bone loss occurs interproximally
    - - composed of cortical bone