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KMID : 1035320170440040319
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Korean Society for Dental Materials
2017 Volume.44 No. 4 p.319 ~ p.327
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Effect of glazing and aging on optical properties of high-translucency zirconia
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Nam Min-Gyeong
Park Mi-Gyoung
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Abstract
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The purpose of this study was to examine the effect of optical properties of high-translucency zirconia used for monolithic restorations due to glazing and aging. 10 mm × 10 mm × 1.2 mm zirconia specimens were prepared using Lava plus. Each zirconia specimen was classified into SS (control group), SG (glazing), AS (aging) and AG (aging after glazing) according to glazing and aging (n=11). The CIE L* a* b* values of each specimen were measured using a spectrophotometer and the TP values were calculated for translucency comparison. The CIE L* value and CIE a* value decreased and the CIE b* value increased in the glazed SG and AG groups (p<.01). The glazing treatment reduced the brightness of zirconia specimens and increased the tendency of green and yellow. TP values were significantly increased in the glazed group (p<.001). CIE L*, a*, b* values and TP values did not show any significant difference in the aged groups (p>.05).
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KEYWORD
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High-translucency zirconia, Optical properties, Glazing, Aging
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