题目内容
(请给出正确答案)
[主观题]
Which of the following is the best reason for pouring a condensation impression material a
s soon as possible()
A.the degree of polymerization of condensation polymers is initially high and then decreases with time
B.evaporation of a volatile by-product causes shrinkage ofthe set material
C.If left unpoured,condensation impression materials expand as they absorb water from air
D.condensation polymers will start to react with the polymer of the impression tray and cause distortion
查看答案
如果结果不匹配,请 联系老师 获取答案