What unit is utilized to polymerize or cure light-cured materials?

The unit primarily used to polymerize or cure light-cured materials is a light box, often referred to as a triad machine. This device employs a specific wavelength of light to activate the photoinitiators in light-cured materials, facilitating the polymerization process. During this process, the materials transition from a viscous state to a solid state, achieving the necessary hardness and strength for dental applications.

Using a light box is particularly effective because it allows for controlled exposure to the light source, ensuring consistent and adequate curing of the materials. Other methods of curing, like heat or UV light, are not considered standard for typical light-cured materials; thus, the light box stands out as the preferred method in dental practice for these types of materials.