Studies evaluating the effects of curing lights
on temperature increase in the pulp chamber during bracket (1, 2) and buccal tube bonding (9) showed that no light source except QTH with high-light intensity (HQTH) (1) exceeded the critical value of 5.5[degrees]C.
Similarly, for light cure cements stiffening might take place when exposed to curing light
.25 Although the material seems hard but it should be noted that polymerization reaction continues for twenty-four hours.
LED are curing lights
that consisted of various semiconductors joined together to generate blue light.4 LED got advantages of low power, 10000 hours life, small size, and resistant to shock and vibration.5
Perforations of 1 mmin diameter, allowed enough amount of curing light
to pass through the perforated plate ( I recorded 400 m watt/ cm2 out of a source of 1100 m watt/cm2) and was able to induce the desired curing process in the composite.
However, the displayed output values in the Bluephase Meter, the Curing Light
Meter 105, and the Model L.E.D.
Dentists should be aware that, when used for resin curing, argon lasers do not necessarily produce a resin with physical properties superior to those of resins cured with traditional halogen curing lights
The purpose of this study was to determine if the use of barriers with curing light
tips would affect the light output intensity of four light curing units as measured by a dental radiometer.
Vista Dental Products introduces the VALIANT[TM] LED curing light
that produces uniform, high-intensity light in the 395-500 nm wavelength range.
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Source (Composite) To Various Govt.
Paul, MN, USA) Intensity of the light was monitored periodically with a radiometer (Demetron/Kerr, Danburg, CT, USA) to ensure a minimum value of 500 mW/cm.2 For all the specimens, the curing light
was held two mm away from the restoration and each layer was cured according to the manufacturers' instructions.
Also Included is the dual-wavelength PolusA curing light
, capable of curing both CPQ and PPD composites.
El-Mowafy and Rubo (16) showed that dual-cured resin cements reached an adequate DC, even in areas that are less accessible to the curing light
, emphasizing the importance of the self-curing catalyst.