Introduction about LED Light Curing Unit

The use and function of LED light curing unit

LED light curing unit is mainly used in the clinic, dentistry, curing the light-curing resin to use for repairing teeth by the department of stomatology. The superior curing effect of LED light curing machine is being recognized by more and more physicians.

LED light curing unit is not completely luminescent

LED curing light（www.ledcuringlight.net） is luminescent, the heat of LEDs used by light-curing machine is much smaller compared with halogen lamps, and the light is almost all blue ray, so that it is luminescent. However, some curing unit use high power LED, on the one hand its light intensity is high, such as up to 1000mW/cm2 or more, on the other hand, it must increases the drive current in the design as much as possible in order to get enough light intensity, such as up to 1000-2000mA, resulting in a larger LED heat, the spectral range being broadened, so that it will also make the resin rise in temperature, such kind of LED light curing unit is not completely luminescent.

How to decide completely luminescent LED light curing unit?

It needs for further research whether it is necessary to pursue completely luminescent LED light curing unit. But at least they are required that the resin temperature at curing rise lower than the halogen curing machine. When you are purchasing, you can align the light side on the palms, irradiating in glare mode, determine the temperature rise felt by the palms, it is appropriate that the temperature felt by the palm is not too hot. Of course, the curing effect of completely luminescent LED light curing unit is being recognized by more and more doctors.

LEDs used by LED light curing unit
 
The LEDs used by LED light curing unit can be divided into two categories: special high-brightness LEDs and high power LED. The former usually uses a group of seven or more LEDs, collecting light and deriving through spotlighting type optical bar. Such kind of light curing unit is completely luminescent, the spot temperature rise is tiny, which is hardly to feel the resin temperature rise, but its intensity is lower if tested by traditional light meter, which is usually 250-350mW/cm2. And the light intensity emitted by high-power LEDs is higher; some single LED can make the light strong up to 700 or even 1000mW/cm2. However, compared with the former, its spectral range is wider and has also a certain degree of fever.