Most people do not really know what Periodontitis is, regardless of its severity as a dental disorder. As dentists in Glendale Arizona will explain, this disease is basically the inflammation around the tooth—meaning that it is a gum infection which continuously damages the soft tissue as well as the bone supporting the teeth. It is one of the periodontal diseases that basically infect the periodontium – the tissues that surround and support the teeth. When people are affected with periodontitis, the bone around the teeth is slowly lost due to the presence of microorganisms like bacteria that stick and reproduce on the surface of the tooth. This will then result to inflammation as a reaction by the immune system.