The toothpaste 1, wherein {HEAD ~ the calcium metasilicate} has {TAIL ~ a CaO/SiO2 molar ratio} of 0.75 to 1.3 
The toothpaste 1 , wherein { HEAD ~ the calcium metasilicate } has { TAIL ~ a CaO / SiO2 molar ratio } of 0.75 to 1.3
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH