Periodontal disease is an advanced gum disease that is caused by the bacteria present in dental plaque. Periodontal diseases are the infection of the gum where the gum tissue and jaw bone that support our teeth are decayed and destroyed. Periodontitis is characterized by inflammation of the gums. This initial inflammation of the gums is known as gingivitis. The gums may look red, swollen and you might even notice a discolored layer of bacterial plaque on your teeth. Untreated gingivitis can progress into periodontitis. If the progress of periodontitis is not halted, the supporting structures of the teeth which include the surrounding gums and bone will be damaged and eventually destroyed. When people ignore at this stage too, the jaw bone loss proceeds with the teeth loss.