dental calculus การใช้

:The dental calculus thing is not good.
Dental calculus deposits harbor harmful bacteria.
Dental calculus, commonly known as tartar, consists almost entirely of calcium phosphate salt, the ionic derivative of calcium phosphate ( the primary composition of teeth and bone ).
Study of Starch Grains which are plant microfossils, obtained from storing and cooking ceramic vessels, stone tools as well as dental calculus of burials has shed a light on plant usage in Indus Valley Civilization.
Phytoliths may be extracted from residue on many sources : dental calculus ( buildup on teeth ); food preparation tools like rocks, grinders, and scrapers; cooking or storage containers; ritual offerings; and garden areas.