Periodontists specialize in treating advanced gum disease, and work together with your general dentist to care for oral health by halting the progression of periodontitis and subsequently treating the various forms of gum disease.
What is the origin of an earthquake called in CA? Well, the origin of the earthquake is called the focus, and the point on the ground directly above the focus is called the epicenter. In CA, earthquakes generally originate frâ¦om the San Andreas Fault. Susie Harrell.
Logout. Earthquakes can also occur far from the edges of tectonic plates, along faults. Faults are cracks in the lithosphere caused by the stresses created as sections of a plate (or two plates) are moving in different directions. In this case, the earthquake event is called a slip.