Curing Lights & Composite Resins | 合法醫療器材資訊網

2020年9月28日—ThedentistwouldthenhavetolayerUV-curedcompositeasinglemillimeteratatime.TheintroductionofCQasaphotoinitiatorenabled ...

Most composite resins seem to be the same, and most light-curing devices seem bright enough to cure most composite resins. Significant differences abound, though. It’s important, when choosing your materials and equipment, to understand the chemistry of composite resins and your curing light’s ability to adequately polymerize them.

The majority of composite resins comprise a resin-based oligomer polymer matrix with embedded glass fillers that are pretreated with organosilanes so they’ll chemically adhere to the bisphenol Aglycidil methacrylate or urethane dimethacrylate resin matrix. For most direct-placement composite resins, polymerization is mediated by light-sensitive photoinitiators.

Today’s composites predominantly employ camphoroquinone (CQ), which is sensitive to predominantly blue light (with a wavelength of about 420 to 480 nanometers). Some manufacturers, ...