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Updated: May 20, 2026

Evaluating the Effects of Different Polishing Methods on Color Stability of Dental Restorations in Pediatric Dentistry
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Published on: June 6, 2025

Enamel colour changes after debonding using various bonding systems.

Abbas R Zaher1, Essam M Abdalla, Maha A Abdel Motie

  • 1Alexandria University, Alexandria, Egypt. azaher@idsc.net.eg

Journal of Orthodontics
|July 10, 2012
PubMed
Summary

Shorter resin tag penetration correlated with less enamel color change after orthodontic bracket removal. Self-etch primers resulted in less resin penetration, potentially reducing iatrogenic color alteration.

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Area of Science:

  • Dental Materials Science
  • Orthodontic Adhesion
  • Enamel Surface Analysis

Background:

  • Enamel color alteration is a concern following orthodontic treatment.
  • Resin tag formation during bracket bonding may influence enamel aesthetics.
  • Understanding the relationship between resin tag depth and color change is crucial for minimizing iatrogenic effects.

Purpose of the Study:

  • To investigate the association between enamel color alteration and resin tag depth.
  • To evaluate the impact of different etching methods on resin tag length and color change.

Main Methods:

  • In vitro study using 50 human premolar teeth.
  • Groups received prophylaxis, phosphoric acid etching (15s, 60s), or self-etch primers (Prompt L-pop, Xeno III).
  • Orthodontic brackets were bonded, debonded, and teeth were finished/polished. Enamel color (ΔE) and resin tag lengths (SEM) were measured.

Main Results:

  • All experimental groups exhibited clinically perceivable color changes (ΔE > 3.7).
  • Significant differences in resin tag length were observed across groups.
  • A moderate correlation was found between color change and resin tag length.

Conclusions:

  • Shorter resin tag penetration is associated with less enamel color alteration post-treatment.
  • Self-etch primers demonstrate reduced resin penetration compared to phosphoric acid etching.
  • These findings suggest self-etch systems may minimize iatrogenic enamel color changes in orthodontics.