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Related Experiment Video

Updated: Jul 20, 2026

Shrinkage of Dental Composite in Simulated Cavity Measured with Digital Image Correlation
08:45

Shrinkage of Dental Composite in Simulated Cavity Measured with Digital Image Correlation

Published on: July 21, 2014

Resin composite thickness' influence on L*a*b* coordinates and translucency.

S Ardu1, I Rossier2, E di Bella3

  • 1Treatment Plan Unit and Division of Cariology and Endodontology, Clinique Universitaire de Médecine Dentaire (CUMD), University of Geneva, Geneva, Switzerland. stefano.ardu@unige.ch.

Clinical Oral Investigations
|August 26, 2018
PubMed
Summary

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Can Fiber-reinforced Composites Increase the Fracture Resistance of Direct Composite Restorations in Structurally Compromised Teeth? A Systematic Review and Meta-analysis of Laboratory Studies.

Operative dentistry·2024
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Micromorphology of Root Canal Walls After Laser Activated Irrigation.

The European journal of prosthodontics and restorative dentistry·2023
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Restoration of Severely Damaged Endodontically Treated Premolars: Influence of the Ferrule Effect on Marginal Integrity and Fracture Load of Resin Nano-ceramic CAD-CAM Endocrowns.

Operative dentistry·2022
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Caries Detection with Near-Infrared Transillumination Using Deep Learning.

Journal of dental research·2019
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Corrigendum to 'Restoration of severely damaged endodontically treated premolars. The influence of the endo-core length on marginal integrity and fatigue resistance of lithium disilicate CAD-CAM ceramic endocrowns." [J. Dent. 68C (2018) 41-50].

Journal of dentistry·2018
Same author

Correction to: Color stability of different composite resins after polishing.

Odontology·2018

Material thickness significantly impacts the color and translucency of dental composites. Thicker specimens showed greater color variation, affecting shade matching in clinical applications.

Area of Science:

  • Dental Materials Science
  • Restorative Dentistry
  • Color Science in Dentistry

Background:

  • Accurate shade matching is crucial for aesthetic dental restorations.
  • Understanding factors influencing composite optical properties is essential for predictable clinical outcomes.

Purpose of the Study:

  • To investigate the effect of varying material thickness on the L*a*b* color coordinates and translucency of different composite shades.
  • To quantify color differences (ΔE00) and transparency changes across different thicknesses and backgrounds.

Main Methods:

  • Three commercial resin composite materials (Essentia, Brillant Everglow, Inspiro) were fabricated into disc specimens of 0.5, 1.0, and 1.5 mm thickness.
  • L*a*b* coordinates were measured using a reflectance spectrophotometer against black and white backgrounds.
Keywords:
L*a*b* coordinatesResin composite thicknessTranslucency

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  • Transparency and color differences (ΔE00) were calculated for each specimen.

    • Main Results:

    • Median ΔE00 values increased with composite thickness, indicating greater color variation, especially over 1.0 mm.
    • Transparency decreased significantly as material thickness increased, ranging from 14.8% to 34.6% across tested materials and thicknesses.
    • Color variations were observed on both black and white backgrounds, with higher ΔE00 values generally noted on the black background for thicker specimens.

    Conclusions:

    • Composite material thickness is a significant factor influencing L*a*b* color coordinates and translucency.
    • These findings highlight the importance of considering material thickness during shade selection and application for achieving optimal aesthetic results in restorative dentistry.