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광조사기의 최신지견

contemporary issues in light curing unit

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초록

상아질 접착 시스템이 발전함에 따라 레진컴포짓은 전치부 및 구치부 치아의 수복 재료로 널리 사용된다. 1970년대 초반 레진컴포짓의 중합에 UV light 이 처음 사용된 이래로 QTH (Quartz-Tungsten-Halogen), PAC (Plasma arc curing) light, LED (Light emitting diode) linght 및 레이저가 광조사기로 개발되어 사용되고 있다. 레진컴포짓은 적절히 중합되지 않으면 수복물의 파절, 이차 우식, 또는 수복물의 과도한 마모로 인한 수복물의 조기 실패를 초래할 수 있다. 이 종설은 광조사기의 종류 및 특성, 레진컴포짓의 광개시제, 레진컴포짓의 중합에 효과적인 광조사기의 광도와 조사시간, 조사 거리, 중합 모드 및 청색광의 위험성에 대한 내용을 정리하였으며 이를 통해 광조사기를 적절히 사용함으로써 미중합 레진을 줄여 수복물의 수명을 연장시키는데 목적이 있다.

Abstract

As dentin bonding systems develop, resin composites are widely used as restorative materials for anterior and posterior teeth. QTH(Quartz-Tungsten-Halogen), PAC (plasma arc curing) light, LED (light emitting diode) light and laser have been developed and used since UV light was first used for light curing of resin composite in 1970. However, failure to adequately polymerize the resin composite can lead to premature failure of the restoration due to fracture, secondary caries, or excessive wear of the restoration. This review summarizes the types and characteristics of the light curing unit, the photoinitiator of the composite resin, the appropriate light intensity and time of the light curing unit for resin polymerization, the irradiation distance, the polymerization mode, and the risk of blue light. It is possible to reduce the unpolymerization of the resin restoration and increase the longevity of the resin composite restoration by appropriately using light curing unit

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