Journal: Drug Invention Today

Article Id: JPRS-P col-00003968
Title: Evaluation of variation in shade in metal-ceramic restoration from the shade tab
Category: Pharmaceutics
Section: Research Article
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    Introduction: During shade matching, the most popular approach is to match the shade of the natural teeth to a shade guide to specify the shade of the final restoration. Digital photography acts as a communication tool between the laboratory and the dentist. However, the accuracy of the shade in the final restoration might vary from the shade tab due to multiple factors. The aim of this study is to assess the variation in shade of ceramic restoration from the shade tab. Aim: The aim of this study is to evaluate the difference in the shades between the shade tab and glazed porcelain. Materials and Methods: Forty glazed metal ceramic restorations shade matched using Vita classic shade guide were included in the study. Photographs of the restoration before cementation were taken under natural lighting condition with black background by the same operator; an online software (Image Color Summarizer 0.76© 2006–2018) was used to analyze the color clusters; the CIELAB values of the average of each cluster were analyzed. The images were clustered such that the ceramic restoration falls in a single cluster. The ceramic restorations were compared with the photographs of their respective shade tabs taken under same conditions. Results: Independent t-test was performed for L*, a*, and b* values separately. There was a statistically significant difference (P = 0.00) between the restoration and the shade tab in “a* value.” There was no statistically significant difference in the L* value (P = 0.059) and b value (P = 0.677). Conclusion: Shade matching assisted by digital photographs is considered to be more accurate when compared to visual methods. However, the changes in the final restoration from the shade tab might happen. The result of this study indicates that there is change in the glazed ceramic restoration from the shade tab used for shade matching.

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    Author(s) Name:

    Pravinya Sam, V. Suresh, Dhanraj Ganapathy*

    Affiliation(s) Name:

    Department of Prosthodontics, Saveetha Dental College, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, Tamil Nadu, India

    *Corresponding author: Dr. Dhanraj Ganapathy, Department of Prosthodontics, Saveetha Dental College, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, Tamil Nadu, India

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    Author:

    Pravinya Sam, V. Suresh, Dhanraj Ganapathy*

    Title:Evaluation of variation in shade in metal-ceramic restoration from the shade tab
    Journal:Drug Invention Today
    Vol(issue):11 (September )
    Year:2019
    Page No: (2099-2103)
  • Experimental Methods Keywords

    Methodology:Color matching, Dental shade matching, Digital camera, Metal ceramic, Shade tab
    Research Materials:metal-ceramic

Keywords

Ceramic restoration Color matching Dental shade matching Digital camera Metal ceramic Shade tab

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