Related Experiment Video
Updated: Oct 6, 2025
Detection and Removal of Tooth-Colored Composite Resin Using the Fluorescence-Aided Identification Technique
Published on: July 27, 2022
Color Change of Resin-based Composites After In Vitro Bleaching Protocols: A Systematic Review and Meta-analysis
M L Vidal1, O E Pecho2, K Collares3
1Marina Lermenn Vidal, DDS, MS, PhD, Postgraduate Program in Dentistry, Dental School, University of Passo Fundo, Brazil.
Objectives:
To systematically review the literature on color stability of resin-based composites (RBC) after in vitro bleaching protocols and to assess the influence of bleaching protocols by meta-regression analysis on RBC color stability, and the association with clinical and experimental characteristics.
Methods:
The electronic search was conducted in MEDLINE/PubMed, Scopus, and Web of Science databases and included English language studies that evaluated and reported color differences (CIELAB values) of RBC after in vitro bleaching procedures using hydrogen peroxide and/or carbamide peroxide.
Results:
Database search for color change of RBC after bleaching retrieved 1335 eligible papers after removing duplicates. After initial screening, 66 articles were assessed for full-text reading with final inclusion of 23 published papers. A meta-regression analysis showed that storage time (p≤0.01), color measuring device (p≤0.01), and background color (p≤0.01) had influenced on color changes of RBC. The bleaching protocol (bleaching agent and time of application) did not influence on color changes of RBC (p>0.01).
Conclusions:
There is evidence that RBC change color after bleaching, but the change is not clinically significant.
