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KMID : 1023420140140040455
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Journal of Dental Hygiene Science
2014 Volume.14 No. 4 p.455 ~ p.460
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Comparative Study of the Surface Roughness of Working Models Fabricated by Dental CAD/CAM Scannable Stone and Type IV Gypsum Products
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Kim Sa-Hak
Kim Jae-Hong
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Abstract
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This study compared the surface roughness and surface characteristics between a type IV stone and scannable stone. Materials used were a type IV stone, two different kind of scannable stone. Ten specimens per experimental group were prepared according to manufacturer.s direction. Surface roughness of specimen was measured using profilometer. The measurement was based on the standard of Japanese Industrial Standards 1994. The mean and standard deviations of each reference point were analyzed using one-way ANOVA and Scheffe post hoc test. The program used to handle statistical analysis was SPSS 20.0 and the significance level was set at 0.05. The difference of surface roughness was statistically significant in order of Scannable Stone 10.07±0.02 μm, Scannable Stone 20.08±0.03 μm, Type IV 0.10±0.04 μm. These results will have to be confirmed in further clinical application researches.
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KEYWORD
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Three-dimensional observation and analysis , Scannable stone , Surface roughness , Type IV stone
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