|
KMID : 0358920060330030365
|
|
Journal of the Korean Academy of Pedodontics
2006 Volume.33 No. 3 p.365 ~ p.376
|
|
|
The effects of blocking the oxygen in the air during the polymerization of sealant
|
|
Oh You-Hyang
Lee Nan-Young
Lee Sang-Ho
|
|
|
Abstract
|
|
|
The purpose of this study was to evaluate the efficacy of blocking the oxygen in the air during the polymerization of sealant. All curing were performed with various light curing units under the application of oxygen gel barrier, stream of nitrogen and carbon dioxide gas for inhibition of oxygen diffusion into sealant surface.
The results of present study can be summarized as follows :
1. The amount of eluted TEGDMA form the specimens cured with all the three different light units in the stream of N_2 and CO_2 gas and application of Oxygen gel barrier(DeOx {(R)}) were significantly lower than in the room-air atmosphere (Control) (p<0.05).
2. In the DeOx {(R)} application, the amount of eluted TEGDMA the specimen cured with PAC light for 10seconds was less than that cured in the stream of N_2 and CO_2 atmospheric conditions (p<0.05)
3. In the LED using 10 or 20sec irradiation times under the stream of N_2 and CO_2, the eluted TEGDMA showed to be no statistically significant difference (p>0.05).
4. The microhardness from the specimens cured with all the three different light units under each treated conditions were significantly higher than in the room-air atmosphere (p<0.05). 5. The surface treatment by DeOx {(R)}, N_2 and CO_2 reduces the thickness of oxygen inhibited layer by sp proximately 49% of the untreated control value.
|
|
|
KEYWORD
|
|
|
Oxygen inhibited layer, Light sources, TEGDMA(triethyleneglycol dimethacrylate)
|
|
|
FullTexts / Linksout information
|
|
|
|
|
Listed journal information
|
|
|