They mostly occur within 1-2 fault lengths of the mainshock. For the largest earthquakes, this is a long distance; it is thought that the 1906 San Francisco earthquake triggered events in southern California, western Nevada, southern central Oregon, and western Arizona, all within 2 days of the mainshock.hey mostly occur within 1-2 fault lengths of the mainshock. For the largest earthquakes, this is a long distance; it is thought that the 1906 San Francisco earthquake triggered events in southern California, western Nevada, southern central Oregon, and western Arizona, all within 2 days of the mainshock.
Nevertheless, you can remove tartar from the teeth at home using certain home remedies. 1  Use a soft bristled toothbrush to clean your teeth, gently, yet effectively. 2  Mix salt and baking soda and brush your teeth to remove tartar from your teeth successfully. 3  Your intake of vitamin C determines your oral health status.
Tartar refers to mineral deposits on the teeth, both above and below the gums that have hardened. These deposits are easy to recognize since they tend to stain easily, and you may note places on the teeth with brown or yellow stains. These stains are usually not on the teeth themselves but to tartar, also called calculus, buildup. This buildup is distinct from plaque, which is caused by bacteria on the teeth, but both are usually present in the mouths of people who have poor oral hygiene.