mercury from broken capsules from being spilled.
Refer to the manufacturers instructions for operation
VISIBLE LIGHT CURING UNIT
Many dental materials are now cured or set by a
visible light in the high intensity (blue) range. The
visible light curing (VLC) technique has varied
applications in dental materials, including pit and
fissure sealants, resins, impression materials, and
surgical dressings, to name only a few.
hand-held VLC units (fig. 11-20) contain a quartz
halogen lamp that produces a high-intensity light to
induce curing (hardening). This allows the provider an
unlimited amount of working time with the material.
Some models have light tips that rotate to permit easy
positioning. The high intensity light radiation emitted
from the unit is capable of retinal injury from chronic
exposure. The light should never be directed toward
the eyes. Staff and patients should use protective
glasses that match the units radiation output.
These units require minimal maintenance and
adjustments. Clean the unit after each patient
treatment following infection control guidelines.
Read the manufacturers instructions for specific
Figure 11-20.Visible light curing unit.