Comparison of curing depth of different LED with high power intensity
2005
Hochschulschrift
Zugriff:
93
Due to the light curing unit’s great impact on the composite resin, the traditional halogen light appears to having an exportation recession with time, and resulting in an incomplete monomer polymerization .And all these may have a black shock on clinic application. The exportation of the LED is more compatible (lacking the defect of halogen light’s recession),and nowadays LED is applied for clinic operation generally. Moreover, a new generation of LED overcomes the deficiency of the intensity. In our study, we try to compare the traditional halogen light(3M XL3000,Kerr Optilux 501) with the new generation(Litex 695,Ivoclar Bluephase,Densply Smartlite Iq, SDI Radii,Kerr LEDmetron).In different lighting time(10,20,40 seconds)use them polymerize the resin clotted in different mode with unique thickness(2,3,4 mm),and test polymerization degree in different LCU under Vicker’s hardness. And then, according to the return of visible curing light meter, spectrometer, thermometer, we try to find if the lighting with high-degree temperature, and if there exists difference between the spectrum of LED and halogen light. Finally, we make the conclusion that LED with high-light loses its advantage of low calefactory. After the continuous 40 seconds lighting, the temperature is over the traditional halogen light(except Litex 695 and SDI Radii).The lighting source with high-light break the limit of resin’s efficient polymerization with 2 mm depth after 20 second’s traditional lighting. Take Lirex695 for example, resin is efficiently polymerized with 4 mm depth after 20 seconds’ lighting, and is efficiently polymerized with 2 mm depth after 10seconds’ lighting.
Titel: |
Comparison of curing depth of different LED with high power intensity
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Autor/in / Beteiligte Person: | Wei, Zhong-Sheng ; 魏仲生 |
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Veröffentlichung: | 2005 |
Medientyp: | Hochschulschrift |
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