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.
Earthquake Focus Learn where the focus and epicenter of an earthquake are located and exactly what they are? Haiti Earthquake The devastating Haiti earthquake occurred in a region prone to large earthquakes. Find out why these large earthquakes occur. What Causes Earthquakes.