The goal of every composite restorative material developed by manufacturers, is to become the synthetic restorative that best mimics natural tooth structure and be the most Biomimetic available. Materials can claim to be the “best” in one or more performance categories or testing protocols. However, the best material theoretically - will be the one that is “best” in the greatest number of those testing categories or properties. This CE webinar will detail and analyze the various “key” testing protocols used in manufacturing for the testing of composite materials. We will then explain the in-vivo, clinical value, of those tests and associated bar graphs. Additionally, we will discuss how these various performance indicators, impact the long-term marginal integrity of restorations.