Developments in polymerization lamps.
Polymerization shrinkage of composite resins and the consequent stress generated at the composite-tooth interface continue to pose a serious clinical challenge. The development of high-intensity halogen lamps and the advent of curing units providing higher energy performance, such as laser lamps, plasma arc units, and, most recently, light-emitting diode (LED) curing units, have revolutionized polymerization lamp use and brought major changes in light-application techniques. A comprehensive review of the literature yielded the following conclusions: (1) the most reliable curing unit for any type of composite resin is the high-density halogen lamp, fitted with a programming device to enable both pulse-delay and soft-start techniques; (2) if any other type of curing unit is used, information must be available on the compatibility of the unit with the composite materials to be used; (3) polymerization lamp manufacturers need to focus on the ongoing development of LED technology; (4) further research is required to identify the most reliable light-application techniques.
Faculty of Dentistry, Hispalense University, Seville, Spain. ajplanas@us.es
Amparo
A
Jiménez-Planas
Juan
J
Martín
Camilo
C
Abalos
Rafael
R
Llamas
D003188:Composite Resins / Q000737:chemistry* / Q000528:radiation effects; D003764:Dental Materials / Q000737:chemistry* / Q000528:radiation effects; D004581:Electronics / Q000295:instrumentation; D004867:Equipment Design; D006801:Humans; D008029:Lighting / Q000295:instrumentation*; D011108:Polymers / Q000737:chemistry / Q000528:radiation effects
D003188:Composite Resins; D003764:Dental Materials; D011108:Polymers