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KMID : 1004520120280020213
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Journal of Dental Rehabilitation and Applied Science
2012 Volume.28 No. 2 p.213 ~ p.221
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Effect on the Externally Stained IPS e.max Press Porcelain Due to Tooth Brushing
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Park Chan-Ik
Kim Hee-Jung
Lee Gyeong-Je
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Abstract
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The purpose of this study was to evaluate the stability of external stain that long term attrition caused by tooth brushing
affected the color variation of external stain of IPS e.max Press Porcelain. The specimen was made by IPS e.max Press LT ingots, and treated the shade of external staning as Orange, A, B, C, D After conducting horizontal toothbrush strokes about 11,000 / 22,000 / 44,000 / 66,000 / 88,000, Color changers of the external stained layer was measured with SpectroShadetm MICRO(MHT, Italy). The result of this study was obtained as follows: 1. After 11,000 strokes, the color changes of shade were greater in Orange shade than the other 4 shade groups. And even though toothbrush strokes were increased until 88,000 , there were no statistical significant color changes about the external stain shade variation.
2. The amount of color variation about increasing of toothbrushing strokes was irregular(no consistent increasing, or
decreasing), and it was no statistical significant changes According to these results, the long term tooth-brushing doesn’t affect the changes of external stain about IPS e.max press porcelain. And it doesn’t reduce the stability of external stain clinically. Later, it will be needed to study other factors affecting the external stain.
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KEYWORD
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external stain, tooth brushing
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