The DMFS is a government-published document which compares various dental restorative materials used for fillings and crowns. It was released in 2004 and has not been updated. The purpose was to help consumers (patients) make informed choices. Feel free to read the document. We're required to provide it to you by California law. However, please know that more up-to-date details regarding materials, especially in regards to biocompatibility, will be thoroughly reviewed with you during your consultation appointment or anytime it is relevant.