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Updated: Sep 10, 2025

Shrinkage of Dental Composite in Simulated Cavity Measured with Digital Image Correlation
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The Use of a Digitally Generated Matrix for Consistent Shade Recording in Tooth Bleaching-A Case Report.

Cristian Abad-Coronel1,2, Guissell Vallejo-Yupa2, Paulina Aliaga3

  • 1Digital Dentistry and CAD/CAM Materials Research Group, Faculty of Dentistry, Universidad de Cuenca, Cuenca 010107, Ecuador.

Dentistry Journal
|August 27, 2025
PubMed
Summary

Spectrophotometers offer objective tooth color measurement, outperforming traditional shade guides in dental bleaching. Digital positioning templates enhance accuracy and reliability for better treatment outcomes.

Keywords:
color monitoringdigital splintsdigital workflowshade guidesspectrophotometertooth bleaching

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Area of Science:

  • Dental Aesthetics
  • Biomedical Instrumentation
  • Digital Dentistry

Background:

  • Accurate tooth color measurement is crucial for cosmetic dental procedures like bleaching.
  • Subjective methods using shade guides lack objectivity and reproducibility.
  • Advancements in digital technology offer potential for improved objective color assessment.

Observation:

  • Spectrophotometers provide objective, quantifiable, and reproducible tooth color data.
  • Digital positioning templates and workflows enhance the precision of spectrophotometer measurements.
  • Traditional shade guides are less effective for precise color monitoring during bleaching.

Findings:

  • Spectrophotometers significantly outperform subjective shade guides in objective tooth color registration.
  • Digital workflows, including positioning matrices, improve measurement accuracy and efficiency.
  • The integration of digital tools enhances the quality of therapeutic splints.

Implications:

  • Spectrophotometers are recommended for precise tooth color assessment in bleaching procedures.
  • Digital positioning matrices improve the reliability of color measurements.
  • Enhanced objective color measurement supports better monitoring and predictable treatment outcomes in aesthetic dentistry.