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KMID : 0362120110330040323
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Journal of Technologic Dentistry
2011 Volume.33 No. 4 p.323 ~ p.329
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Surface Characteristics of the Ground Zirconia
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Kim Sa-Hak
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Abstract
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Purpose: This study was conducted to examine the phase transition according to the zirconia surface treatment. Methods: The specimens were divided to four groups. The first group was sintered at and ground; the second group was sintered at , ground, and sintered at ; the third group was sintered at , ground, and -sandblasted; and the fourth group was sintered at , ground, -sandblasted, treated with 9.5% hydrofluoric acid, and ultrasonic cleaner-washed for two minutes. The monoclinic fractions were measured, and the surface was observed via SEM. Results: The monoclinic fraction was in the control group Zr1, in the experimental group Zr2, in Zr3, and in Zr4. On the surface, the phase transition hardly occurred in the control group Zr1, but it increasingly occurred in the experimental groups Zr3 and Zr4. Conclusion: The monoclinic fraction was high in the experimental groups Zr3 and Zr4. The phase transition did not occur in the control group, but increasingly occurred in the experimental groups.
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KEYWORD
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zirconia, monoclinic, tetragonal
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