Final answer:
New restorative materials must be biocompatible, durable, and esthetically pleasing.
Step-by-step explanation:
The criteria for new restorative materials include that the material is biocompatible, durable, and esthetically pleasing. Biocompatibility ensures that the material is safe and does not harm the original remains. Durability allows the restoration to withstand wear and tear, while esthetic appeal ensures that the restoration blends in with the natural appearance.