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KMID : 0362120100320020057
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Journal of Technologic Dentistry
2010 Volume.32 No. 2 p.57 ~ p.63
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Phase transition of Zirconia by surface treatments
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Lee Jung-Soo
Shim Jeong-Seok
Jung Hyung-Ho
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Abstract
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Purpose : This study aimed to find out the effects of treatments on the surface of Zirconia.
Methods : To this end, we selected six treatments that have been used widely: steam cleaning, 2bar & 6bar sand blasting, grinding by green stone point, grinding by diamond bur, and grinding by diamond bur with water spray.
Results : The results of our study showed that monoclinic rate increased from all six treatments. Monoclinic rate varied by treatments, ranged from 0.6% (steam cleaning) to 6.5% (6bar sand blasting). These values from all six treatments were below ISO 13356 standard, which is 25%. Also, we found that two treatments (green stone point and diamond bur) increased roughness of surface of Zirconia.
Conclusion : This study concluded that phase changes of Zirconia were not significant by using six treatments we employed.
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KEYWORD
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Grinding, Sand Blasting, Steam Cleaning, Surface treatment, Zirconia
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