ISO 17304 pdf download Dentistry — Polymerization shrinkage: Method for determination of polymerization shrinkage of polymer-based restorative materials Scope This International Standard specifies a test method for the measurement of the polymerizationshrinkage of external energy-activated polymer-based restorative materials such as composites andcore materials. The method is not suitable for Class 1 (self-curing, see ISO 4049) polymer-based restorative materials. 2 Normative...