In clinic,we should select the suitable undercut deepness wherein the cobalt-chromium alloy casting clasps,according to different brands of the casting alloy,undercut length,undercut slope,and the clasp thickness.

• 在临床工作中 ,应根据不同厂商生产的铸造钴铬合金 ,结合倒凹长度、坡度及卡环粗细选择进入倒凹的深度 ,以获得较理想的固位效果。