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KMID : 0617719970070020133
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Journal of Wonkwang Dental Research Institute
1997 Volume.7 No. 2 p.133 ~ p.138
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Physical properties of the reused IPS-Empress ceramic.
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Abstract
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The IPS-Empress system developed recently is one of the useful all ceramic restorative systems
for esthetic rehabilitation, but the clinical application is restricted because of its high cost.
This study was performed to investigate the color stability of reused IPS-Empress ceramic for
recycling.
Three groups of IPS-Empress ceramic specimens were obtained from first pressing, second pressing and third pressing. The color changes were measured by coloimeter(Model TC-6FX, Tokyo Denshoku Co.).
The results were as follows:
1. The L and b value of IPS-Empress ceramic from second and third pressing were larger than
those from first pressing but the a and E value were lesser.
2. The minute color change of IPS-Empress ceramic suggests its possibility of recycling.
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KEYWORD
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