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.
Best Answer: Earthquakes commonly occure when the plates collide, volcanoes are caused by the spaces between the plates where the magma flows between them and rises to the surface, and mountains are a result of a plate running over another one (so to speak) and the result is that it thrusts the land up.ell convergent boundarie(a plae where plates that move towards one another) one moves beneath the other one, thus forming mountains and volcanoes.... and transfrom boundaries(where two plates grind or slide against eah other) can be a fault line causing earthquakes.