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Dental impression compound is known as a／an()
A．chemoplastic material
B．irreversible material
C．hvdroelastic material
D．thermoplastic material
Which of the following dental materials is an example of an aqueous elastomeric()
A．Impression compound
B．ZOE impression paste
C．Polysulfide
D．Irreversible hydrocolloid
Which of the following materials would exhibit the property of syneresis()
A．impression compound
B．silicon rubber
C．reversible hydrocolloid
D．polyether rubber
A．the compressive strength of the cement is too low
B．cement interferes with the polymerization of the resin
C．zinc oxide and Bis-GMA form. a soluble compound
D．the cement increases the polymerization shrinkage of the resin
