Dental materials for preparation mcqs

Q.  About polymerization shrinkage of composite all are true, except______________?

a. Polymerization shrinkage is greater if bonded surface area is lesser than unbounded surface area
b. Polymerization shrinkage is high if within the enamel margins
c. Acid etching and priming will decrease polymerization shrinkage
d. Microleakage can occur because of polymerization shrinkage


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