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