Calcification: Tartar, or calculus, is dental plaque that has hardened or calcified because the plaque hasn't been properly disrupted or removed by brushing and flossing.
Answered 12/27/2014
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Hard plaque: When plaque is left uncleaned , not brushed and flossed away, it calcify from the minerals in your saliva turning it to calculus or tartar, that is only can be cleaned by your dentist ..Tooth v.
Answered 1/3/2014
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