Publication:

The influence of curing light intensity on composite restoration durability

Curing light is currently a crucial part of multiple procedures in dentistry. The main function of curing light is polymerization of composite restorations. Curing light intensity and time are two important factors that can significantly affect the polymerization process. Inadequate curing may lead to restoration fracture, microleakage, secondary caries, and postoperative sensitivity. Recently, different curing light devices with various light intensities have been developed, aiming to minimize polymerization shrinkage. This review aims to examine the impact of different curing light intensities on the durability of various types of composite restoration. Curing light intensity can influence the depth of cure and degree of conversion of the composite restoration. Types of curing light include light-emitting diode (LED), argon lasers, quartz-tungsten halogen (QTH), and plasma arc curing (PAC). Both ultra-fast curing and conventional curing led to an adequate degree of conversion and polymerization degree in bulk-fill resin-based composites. Overall, while ultra-fast curing shows promise, careful consideration of material compatibility and technique sensitivity remains essential to ensure restoration longevity and clinical success.