Final answer:
The process referred to is condensation, which is important in dental restorative procedures to densely pack the material into a cavity. Condensation is followed by amalgamation in the case of dental amalgams.
Step-by-step explanation:
The process of densely packing restorative material into a cavity preparation is known as condensation. This is an important step during dental procedures involving cavity fillings. Through condensation, a denser and more cohesive restoration is achieved, leading to a better filling of the cavity and restoring the tooth's functionality. Dental amalgams, which are commonly used for this purpose, involve an amalgamation process to mix and bind the metallic components together before the condensation takes place.