1 Inflammation of the gingiva, bone loss, and increased gingival recession may progress slower than with other forms of periodontitis.  Periodontitis Associated with Systemic Diseases - Systemic diseases, such as heart disease, diabetes, and certain forms of arthritis, may have a correlation with periodontitis.
Main Content. An earthquake is ground shaking caused by a sudden movement of rock in the earthâs crust. Such movements occur along faults, which are thin zones of crushed rock separating blocks of crust.
Earthquakes also occur along fault lines in the Earthâs crust. Faults are basically cracks in the continental or oceanic plates triggered due to plate tectonics. The crust is highly unstable in the vicinity of fault lines and disturbances along the fault lines might trigger massive earthquakes. 3. The Circum-Pacific Seismic Belt Or The âRing Of Fire.