Curing Performance; Depth Of Cure According To Iso 4049:2000 - DENTSPLY DeTrey SmartLite PS Manual

SmartLite™ PS
6

Curing performance

6.1

Depth of Cure according to ISO 4049:2000

The depth of cure of a restorative material correlates directly with the light output of a curing
light. The higher the intensity of a curing light the more efficient the depth of cure. This
usually is the result of a higher degree of conversion, which leads to a stronger material and
an increase in durability of the resulting restoration.
Depth of cure was measured for SmartLite PS, along with other LED lights, and a strong
halogen light according to the method described in the ISO 4049:2000.
It is important to note that this particular method defines the depth of cure as 50 % of the
actual thickness of the cured cylindrical specimen: A sample of the material is exposed to the
light source and the un-polymerised material is scraped away using a spatula. The thickness
of the remaining sample is then divided by 2 resulting in the depth of cure according to ISO.
The results are shown in Figure 6 and Figure 7.
3,0
2,5
2,0
1,5
1,0
0,5
0,0
Figure 6 Depth of Cure (ISO 4049:2000) of Spectrum TPH A2 after a 10sec cure with
various curing units
SmartLite PS Starlight Pro L.E.Demetron I Spectrum 800
@800
Scientific Compendium
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