Isahani ya Kalisiyumu ni kimwe mu byuma bya calcium ya calcium, hamwe nubuso bwinshi bwa calcium silicate yububiko hejuru yuburyo bwa chimique, cyangwa enamorganic enamel izaba ifite ikirere cyinshi cya fluorocarbon aluminium zinc icyuma hamwe nibihuza hamwe, byongerwaho nubushyuhe bwinshi nigitutu, umuvuduko ukabije ukiza inzira, kandi inyuma hamwe nigice cyugaye, ubuhehere, gushimangira uruhare rwimyenda ya aluminium.Ibyuma bya calcium plaque idasanzwe, yabonye patenti nyinshi zigihugu, ni ubwoko bwo kurengera ibidukikije, kuzigama ingufu ibikoresho bishya, bikoreshwa cyane muri tunnel, metero, ikibuga cyindege nibindi bikoresho byo gutwara abantu munsi yubutaka no kurinda igihugu.