Which of the following statements is true of polymerization shrinkage of composite restorative materials?

Question

Quizplus · Accepted Answer

Incremental addition and polymerization of composite in layers will reduce the effective shrinkage. This is because incremental addition allows for the release of stresses from polymerization shrinkage before adding more material, which reduces the overall shrinkage. Bulk addition, on the other hand, does not allow for the release of stresses and leads to greater shrinkage. Microhybrid composites actually shrink less than microfilled composites due to their higher filler content, which reduces the volume of resin that can shrink. And while the stresses from polymerization shrinkage cannot exceed the bond strength of a composite to tooth structure, this does not mean that they do not cause stresses or contribute to failure over time.

Which of the Following Statements Is True of Polymerization Shrinkage