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KMID : 0358920070340010081
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Journal of the Korean Academy of Pedodontics
2007 Volume.34 No. 1 p.81 ~ p.90
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A study on the shear bond strengths of visible light-cured glass ionomer cemant with several light-curing units
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Kim Min-Soo
Kim Jong-Soo
Yoo Seung-Hoon
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Abstract
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The purpose of this study was to assess the effect of light-tip distance on the shear bond strength of a visible light-cured glass ionomer cement(Fuji Ortho LC : GC, Japan) cured with three different light curing units : a halogen light(Elipar Trilight : 3M ESPE, Seefeld, Germany), a Light Emitting Diode (LED, Elipar Freelight2 : 3M ESPE, Seefeld, Germany) and a plasma arc light (Flipo : LOKKI, France).
1. When used at a distance of 0mm from the bracket, the three light curing units showed no statistically different shear bond strengths. At distance of 3 and 6mm, no significant differences were found between the halogen and plasma arc lights, but both had significantly higher shear bond strengths than the LED light.
2. The halogen light and plasma arc light showed that no significant differences in bond strength were found among the three distances. Using the LED light, a greater light-tip distance produced significantly lower shear bond strengths.
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KEYWORD
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shear bond strengths, light curing units, visible light-cured glass ionomer cement
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