Which of the following is a sign of chronic periodontitis?

Chronic periodontitis is characterized by a gradual loss of the supporting structures of the teeth, particularly the gums and bone. One of the hallmark signs of this condition is gingival recession, which refers to the shrinking of the gum tissue away from the teeth, exposing more of the tooth root. This recession can lead to increased tooth sensitivity, esthetic concerns, and can also affect the stability of the teeth if not managed properly.

Gingival recession occurs as a result of ongoing inflammation and destruction of the connective tissues and bone supporting the teeth, making it a definitive indicator of chronic periodontitis. While other symptoms may accompany this disease, they are often not as definitive in diagnosing chronic periodontitis as gingival recession is.

Intense pain and swollen gums might indicate other dental issues or more acute forms of gum disease rather than chronic periodontitis itself. Excessive bleeding can be associated with various periodontal conditions, including acute issues, but is not exclusive to chronic periodontitis. Thus, gingival recession stands out as a key sign of the chronic nature of this periodontal disease.