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Periodontal disease is the most prevalent disease affecting the human dentition. Periodontal disease is a chronic bacterial infection characterized by persistent inflammation, connective tissue breakdown and alveolar bone destruction.The term periodontal disease includes to gingivitis, chronic periodontitis, aggressive periodontitis, necrotising ulcerative gingivitis, necrotising periodontal disease,etc which may or may not have accompanying risk factors such as smoking, systemic conditions and viral infections such as Herpes and HIV.In known research, 800-1,000 species that colonize the oral...