Chronic periodontitis is defined as “an infectious disorder causes inflammation in the supportive tissues of the teeth, advancing loss of attachment, and losing of bone.”(1) Such description illustrates the main clinical and etiological characters of the disorder: (1) formation of dental pulp (dental plaque); (2) periodontal inflammation (e.g., gingival swelling with bleeding on probing); and (3) Clinical attachment loss and alveolar bone loss. periodontitis may also be associated w