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Characteristic of LED light curing unit and classification by generation for clinicians

임상가가 알아두면 유용한 LED 광중합기의 특성과 세대별 분류

  • Shim, Young-Bo (Department of Conservative Dentistry, School of Dentistry, Pusan National University) ;
  • Choi, An-Na (Department of Conservative Dentistry, School of Dentistry, Pusan National University) ;
  • Park, Jeong-Kil (Department of Conservative Dentistry, School of Dentistry, Pusan National University)
  • 심영보 (부산대학교 치의학전문대학원 치과보존학교실) ;
  • 최안나 (부산대학교 치의학전문대학원 치과보존학교실) ;
  • 박정길 (부산대학교 치의학전문대학원 치과보존학교실)
  • Received : 2017.07.17
  • Accepted : 2017.10.24
  • Published : 2017.12.30

Abstract

Since light curing composite resin was introduced in the 1960s, light curing process has been considered as an essential process. Herein, various light sources became available for the process. Quartz-tungsten-halogen (QTH) light curing units (LCUs) dominated the market until the 1990s, before the LED LCUs started replacing them in the 2000s. The LED, developed approximately 50 years ago, came into use in the dentistry field from the late 1990s, and the LED LCUs, with the 2000s. Since then, the LED LCUs have gone through many advancements to its current fourth generation. In accordance to such advancements of the LED light curing unit, the majority of light curing unit used today are LED LCUs. As much as its usage has increased, it is necessary that dental clinicians understand the characteristics of the device. The objective of this review report is to provide the history of the scientific development and describe the characteristics of the LED LCUs.

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