High-intensity LED Light-curing Units – The Heat They Produce
Ron Yapp, MS, John M. Powers, Ph.D.
A primary goal for improvement of LED light-curing units has been to increase the light intensity – the thought being, the higher the intensity, the more rapid and more thorough the cure. Unfortunately, heat generation is a typical consequence of higher light intensity. The amount of heat that develops when light interacts with tooth tissue, resin composite or soft tissues is dependent on: the intensity of the light, how much of the light is reflected or absorbed by the particular material, and how fast the heat is conducted away.
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