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Not all LEDs are the same
In 2007, W&H became the first manufacturer in the world to integrate sterilizable LEDs into rotary dental instruments. In 2010, W&H presents LED+, which offers yet another unique advantage thanks to the specially developed LEDs. This makes W&H the only manufacturer in the world that can offer light quality of this standard – for authentic colour rendering and demonstrably perfect luminosity throughout the treatment area.
What quality criteria are used to assess LEDs?
The LED technology makes it possible to have an exceptionally powerful and user-friendly mini operating light for dental use. The daylight quality light provides the dentist with shadow-free illumination of the entire mouth and is therefore an ideal complement to the large operation area lamps.
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Quality criteria
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Contrasts can be seen as if in daylight at only 5500K
The colour temperature (measured in kelvin) of LEDs determines the colour impression of the light. A temperature of 5500K gives a radiation spectrum corresponding to that of daylight.
High colour rendering index (CRI)
The colour rendering index (CRI) of artificial light sources is very important because a high CRI value significantly improves people’s sense of wellbeing through improved visibility. The new LED instruments from W&H enable the authentic reproduction of red tones in the mouth for the first time.
Large illumination area
LEDs in dental turbines
robust, long-lasting light sources, such as those in the Synea dental turbines barely heat up, are shock-resistant and do not emit any harmful IR and UVA rays.
Sterilizable and long-lasting
The whole W&H LED range is, of course, sterilizable and the lifespan of the LEDs is nearly 10 times as long as that of conventional light sources, such as halogen lamps.
In the new Alegra contra-angle handpieces and in the dental surgical instruments needed, for example, for implantations, self-generated LEDs are used. Thanks to this technology, dentists are now able to use even more sophisticated light instruments that were not available to them before.
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LED technology
LEDs (light emitting diodes) are based on semiconductor connections that convert electricity directly into light. This results in robust, long-lasting light sources that barely heat up and are shock-resistant.
LED light is many times brighter than conventional halogen light and, as a diffuse light source, has a larger illumination field. Halogen light is yellowish in colour. The LED light is neutrally-coloured and makes it possible to work with daylight quality light, without being blinded.
By way of comparison - moonlight has a luminous intensity of 1 Lux and sunlight has a luminous intensity of 100,000 Lux. W&H LEDs produce a luminous intensity of up to 31,000 Lux, which corresponds to the colour spectrum of daylight. As the human eye is accustomed to daylight, contrasts can be perceived best under these light conditions.
The history of LEDs began with initial experiments as early as 1907. The first LED suitable for mass production was red in colour (1960). White LEDs have been available since 1997. W&H developed the first sterilizable LED and, in 2007, was the first manufacturer to integrate it into dental instruments, thereby greatly facilitating the work of dentists.
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