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Updated: Jun 6, 2025

Confocal Time Lapse Imaging as an Efficient Method for the Cytocompatibility Evaluation of Dental Composites

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Published on: November 9, 2014

Color Stability of Bulk-Fill Flowable Resin Composites After Artificial Aging.

Franciele Floriani¹, Carlos A Jurado², Nikkita Madhu¹

¹Department of Prosthodontics, The University of Iowa College of Dentistry, Iowa City, IA 52241, USA.

Dentistry Journal

|November 26, 2024

Summary

This study evaluated the color stability of bulk-fill flowable resin composites. Estelite Bulk-Fill Flow showed the best color stability, especially with shade A1, while Venus Bulk-Fill Flow performed well with shade A3.

Keywords:

bulk-fill color flowable composite resin composite shade

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Area of Science:

Dental Materials Science
Polymer Chemistry
Biomaterials

Background:

Assessing the color stability of dental restorative materials is crucial for aesthetic outcomes.
Bulk-fill flowable resin composites offer clinical advantages but require evaluation for optical property longevity.
Understanding shade and aging effects on composite color is essential for material selection.

Purpose of the Study:

To evaluate the color stability of three bulk-fill flowable resin composites.
To compare color changes in two different shades (A1 and A3) after artificial aging.
To determine which bulk-fill flowable resin composite exhibits superior color stability.

Main Methods:

Three bulk-fill flowable resin composites were tested in shades A1 and A3.
Specimens underwent light curing and polishing before color evaluation.
Color stability was assessed using spectrophotometry (CIEDE2000) before and after artificial aging (thermocycling).

Main Results:

All tested bulk-fill flowable resin composites demonstrated acceptable color stability with shade A1 after aging.
Venus Bulk-Fill Flow showed the best optical properties when using shade A3.
No statistically significant color change was observed for most composites after thermocycling (p > 0.05), except for some A3 shades.

Conclusions:

Estelite Bulk-Fill Flow exhibited the best overall color stability (∆E₀₀ = 2.22) among the evaluated combinations.
Venus Bulk-Fill Flow demonstrated acceptable color stability for shade A3, unlike other composites.
Shade selection significantly impacts the color stability of bulk-fill flowable resin composites.