PERIODONTAL PATHOGENS

This small group of putative periodontal pathogens possesses certain features in common. Most of them have a Gram- negative cell wall. The outer membrane of the Gram-negative cell wall contains lipopolysaccharide (LPS) which has endotoxin activity. Typically, LPS containing Gram- negative cell wall extracts are capable of promoting bone resorption, inhibiting osteogenesis, chemotaxis of neutrophils,

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