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.
To be more specific, most of the earthquake happens at the tectonic plates edgesâ boundary yet it can even occur in the middle area. Faults causing the earthquake can actually be located over the edges of the tectonic plate. Basically, there are different faults that cause an earthquake. They are reverse fault, strike slip fault and normal fault. The normal fault occurs following rock slides downward past other rock of block.