After working in the fields as a child, Zhukov was apprenticed to a furrier in Moscow at age 12. Completing his apprenticeship four years later in 1912, Zhukov entered the business. His career proved short lived as in July 1915, he was conscripted into the Russian army for service in World War I. Assigned to the cavalry, Zhukov performed with distinction, twice winning the Cross of St. George.
Plaque can be removed by a toothbrush and floss. Tartar, known professionally as calculus, is solid and require the dental hygienists' instrument to be removed. All that said, you can prevent tartar by brushing a full two minutes, twice a day.
Tartar on Teeth. Teeth tartar, also called dental calculus, is a crusty deposit that can trap stains on the teeth and cause discoloration. It creates a strong bond that can only be removed by a dental professional. Tartar formation may also make it more difficult to remove new plaque and bacteria. Individuals vary greatly in their susceptibility to plaque and tartar on teeth. For many of us, these deposits build up faster as we age.