Chronic inflammation and loss of periodontium that is associated with the amount of dental plaque or dental calculus present. chronic periodontitis occurs mostly in adults and was called adult periodontitis, but this disease can appear in young people.

Chronic periodontitis is one of the seven categories of periodontitis as defined by the American Academy of Periodontology 1999 classification system. Chronic periodontitis is a common disease of the oral cavity consisting of chronic inflammation of the periodontal tissues that is caused by the accumulation of profuse amounts of dental plaque...