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.
Earthquakesâbefore, during and after. An earthquake is a shaking of the Earth's crust. They strike without warning and vary greatly in severity. Earthquakes can be caused by: 1  underground volcanic forces. 2  the breaking of rock under the Earth's surface. 3  a sudden movement along an existing fault line.n earthquake is a shaking of the Earth's crust. They strike without warning and vary greatly in severity. Earthquakes can be caused by: 1  underground volcanic forces.