Journal of Technologic Dentistry (대한치과기공학회지)

Korean Academy of Dental Technology (대한치과기공학회)
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Measure of shade differences according to the concentration of dental zirconia coloring liquid

치과용 지르코니아 코어에서 착색농도에 따른 색조측정

  • Bae, Eun-Jeong (Department of Dental Laboratory Science and Engineering, Korea University) ;
  • Lee, Hee-Jung (Department of Dental Laboratory Science and Engineering, Korea University) ;
  • Kim, Hae-Young (Department of Dental Laboratory Science and Engineering, Korea University) ;
  • Kim, Woong-Chul (Department of Dental Laboratory Science and Engineering, Korea University) ;
  • Kim, Ji-Hwan (Department of Dental Laboratory Science and Engineering, Korea University)
  • 배은정 (고려대학교 대학원 보건과학과 치의기공전공) ;
  • 이희정 (고려대학교 대학원 보건과학과 치의기공전공) ;
  • 김혜영 (고려대학교 대학원 보건과학과 치의기공전공) ;
  • 김웅철 (고려대학교 대학원 보건과학과 치의기공전공) ;
  • 김지환 (고려대학교 대학원 보건과학과 치의기공전공)
  • Received : 2013.07.26
  • Accepted : 2013.09.13
  • Published : 2013.09.30
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Abstract

Purpose: In this study, in order to provide objective standard of the mixed concentration of the zirconia coloring-liquids, compare the shade differences after colored zirconia blocks from different concentrations. Methods: After immersion for 2 minutes zirconia specimen ($1.5{\times}1.5{\times}0.6{\pm}0.01mm$) in coloring-liquids that produced different concentrations, were sintered in furnace dedicated. Then, it was measured in spectrophotometer and Shadepilot. It has been determined mean and standard deviation of the color difference for each group, and verified by one-way ANOVA using the (version12.0) SPSS WIN Program the difference in shade according to the concentration at the significance level of 95% confidence, it conducted a Tukey's multiple range test to post-test. Results: The mean of $L^*$ was decreased toward LN35 group, however the mean of $a^*$ and $b^*$ was increased(p<.05). There is a statistically significant difference in the results of $L^*$ post hoc test of each group was LN15-LN30/LN35, LN20-LN30/LN35, LN25-LN30/LN35, and LN30-LN35 group. The $a^*$ group, it was found that there is a statistically significant difference in all groups for each(p<.05). The $b^*$ group, it was found that there is a statistically significant difference in all groups except the LN25-LN30(p<.05). Conclusion: In order to make effective use of the coloring-liquids of zirconia, the device objective, accurate concentration measurement is required, from the present study, we presented evidence basic to this.

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References

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