![]() Changing halogen bulbs is always stressful, and not always successful. This is particularly problematic with halogen bulbs that can be contaminated by the oils on human skin yet they require a very high level of manual dexterity to install into their oddly designed sockets. Incandescent and halogen bulbs also require rather regular maintenance and replacement. The full spectrum lighting may emit rays in the UV range, which can be uncomfortable to the patient. If the operatory light (particularly the halogen variety) is positioned too close to the patient’s mouth, a long appointment can produce tissue desiccation (Fig. The heat also tends to warm the operatory, pleasant in the winter perhaps, but much less so in the warmer seasons. ![]() While modern incandescent and halogen light sources are both effective at illumination, they have the unpleasant side effect of heat production, generated by the infrared spectrum of the emitted radiation.1 Any patient or dentist who has come into direct physical contact with a “hot” light is familiar with the disagreeable consequences. PROBLEMS WITH EXISTING OPERATORY LIGHTING More recently, halogen bulbs have gained popularity in the profession. As the use of light-focusing bulbs and light-reflective surfaces matured, practitioners became highly dependent on external illumination, targeting specific areas in the mouth for visual inspection. The illuminated visual access enhanced diagnosis and facilitated more precision in dental procedures. With the introduction of gas and incandescent lighting, dentists were finally able to shed some light on the teeth that they were treating. Lighting technology has evolved dramatically over the past century.
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