How do I select and deploy Light Curing Units for BFC?

Modern dentistry requires restorative systems with good handling properties and ergonomic and efficient light-curing units (LCUs). We consider how LCUs been developed and the corresponding materials chemistry, including the photoinitiator systems. The early QTH lights changed restorative dentistry but had several disadvantages, which were overcome by blue light emitting diodes (LED) LCUs. However, clinicians now need to understand how these devices function and the key design factors in selecting and using LED-LCUs. Devices currently available can exhibit wide variations in radiant output, spectral distribution, and beam profile. They may deliver light with varied characteristics to match the absorption of different photoinitiator systems.