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.
Most earthquakes begin deep underground at a point called the focus. As the rocks shatter at the focus, shock waves called seismic waves radiate outward in all directions. The point on Earthâs surface directly above the focus is called the epicenter. This is where most damage occurs.