**3. Is the correlation between gingival diseases and systemic health considered one or two way?**

Gingivitis is defined as an inflammation induced by plaque accumulation and accompanied with redness, bleeding, and edema, and sometimes it might be painless as a silent chronic disease. If this inflammatory process is left untreated, it may turn into a dangerous progressive disease, with continuous bone and attachment loss, referred to as periodontitis [11].

There are two directions regarding the relationship between the gingiva and systemic diseases; the first one explains the impact of systemic disturbances and illnesses on the gingiva and periodontium, while the second one describes the possible effects of gingival and periodontal diseases on the general health.
