Evaluation of the color reproducibility of allceramic restorations fabricated by the digital veneering method

Jae Hong Kim, Ki Baek Kim, Woong Chul Kim, Hae Young Kim, Ji Hwan Kim

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

Purpose: The objective of this study was to evaluate the clinical acceptability of all-ceramic crowns fabricated by the digital veneering method vis-a-vis the traditional method. Materials And Methods: Zirconia specimens manufactures by two different manufacturing method, conventional vs digital veneering, with three different thickness (0.3 mm, 0.5 mm, 0.7 mm) were prepared for analysis. Color measurement was performed using a spectrophotometer for the prepared specimens. The differences in shade in relation to the build-up method were calculated by quantifying ΔE* (mean color difference), with the use of color difference equations representing the distance from the measured values L*, a*, and b*, to the three-dimensional space of two colors. Two-way analysis of variance (ANOVA) combined with a Tukey multiple-range test was used to analyze the data (α=0.05). Results: In comparing means and standard deviations of L*, a*, and b* color values there was no significant difference by the manufacturing method and zirconia core thickness according to a two-way ANOVA. The color differences between two manufacturing methods were in a clinically acceptable range less than or equal to 3.7 in all the specimens. Conclusion: Based on the results of this study, a carefully consideration is necessary while selecting upper porcelain materials, even if it is performed on a small scale. However, because the color reproducibility of the digital veneering system was within the clinically acceptable range when comparing with conventional layering system, it was possible to estimate the possibility of successful aesthetic prostheses in the latest technology.

Original languageEnglish
Pages (from-to)71-78
Number of pages8
JournalJournal of Advanced Prosthodontics
Volume6
Issue number2
DOIs
Publication statusPublished - 2014 Apr

Keywords

  • All ceramic restoration
  • Color reproducibility
  • Digital veneering
  • Spectrophotometer

ASJC Scopus subject areas

  • Oral Surgery
  • Dentistry (miscellaneous)

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