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Related Experiment Videos

Shade matching by dental students.

Sheldon Winkler1, Kenneth G Boberick, Kasia S Weitz

  • 1Department of Prosthodontics, Temple University School of Dentistry, Philadelphia, PA, USA. swinkdent@cox.net

The Journal of Oral Implantology
|October 31, 2006
PubMed
Summary

Dental students accurately identified darker shades on the Portrait IPN shade guide. However, they struggled most with determining the correct hue for unmarked shade tabs, often misclassifying them into different hue groups.

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Area of Science:

  • Dental Materials Science
  • Color Science in Dentistry

Background:

  • Accurate shade selection is critical for aesthetic dental restorations.
  • The Portrait IPN (International Dental) shade guide is a common tool used in dental education and practice.
  • Understanding the challenges dental students face in shade matching is essential for improving training.

Purpose of the Study:

  • To evaluate the ability of dental students to accurately identify specific shades using the Portrait IPN shade guide.
  • To identify specific shade characteristics (hue, value, chroma) that pose the greatest difficulty for dental students.
  • To analyze the patterns of errors made by dental students during shade tab identification.

Main Methods:

  • Dental students were presented with unmarked shade tabs from the Portrait IPN shade guide.

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  • Participants were asked to identify the correct shade tab.
  • Accuracy rates were analyzed based on shade characteristics, including hue, value, and chroma.

    • Main Results:

    • High identification rates were achieved for darker shades (P14, P24) with high chroma and low value in yellow hue groups.
    • A high identification rate was also observed for shade P32 (low chroma, high value in reddish gray hue).
    • The most significant difficulty was encountered in correctly determining the hue group for unmarked shade tabs, with errors often occurring within the same value and chroma range.

    Conclusions:

    • Dental students demonstrate proficiency in identifying certain high-contrast shades but face challenges with hue discrimination.
    • The study highlights the need for enhanced training in hue differentiation for dental students using the Portrait IPN shade guide.
    • Improving shade matching accuracy in dental education is crucial for achieving predictable aesthetic outcomes in clinical practice.