Barcol Hardness - DENTSPLY DeTrey SmartLite PS Manual

SmartLite™ PS
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
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).
2,5
2,0
1,5
1,0
0,5
0,0
SmartLite PS Starlight Pro L.E.Demetron I Spectrum 800
@800
Scientific Compendium
TPH
A4 a depth of
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