SmartLite™ PS
Scientific
Compendium
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SmartLite PS
Starlight Pro
L.E.Demetron I
Spectrum 800
@800
Figure 7
Depth of Cure (ISO 4049:2000) of Spectrum TPH A4 after a
10sec
cure with
various curing units
The above data demonstrate that even for dark shades such as Spectrum
TPH
A4 a depth of
cure of 2mm thickness can be achieved with SmartLite PS after 10sec exposure .
6.2 Barcol
hardness
Another method to determine the curing performance of a curing light is to measure the
hardness of the exposed surface and the hardness at a given depth using Barcol hardness.
By curing a 2mm thick sample of the restorative material (Spectrum TPH A2, A4) the
obtained hardness values for the illuminated (top) and the non-illuminated (bottom) side of
the sample, as well as the bottom/top hardness ratio, were measured. The results
demonstrate again that a 2 mm depth of cure can be achieved by using SmartLite PS for
10 seconds (Figure 8, Figure 9).
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