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Updated: Apr 17, 2026

Evaluating the Effects of Different Polishing Methods on Color Stability of Dental Restorations in Pediatric Dentistry
Published on: June 6, 2025
Bleaching effect of ozone on pigmented teeth.
Vagharedin Akhavan Zanjani1, Amir Ghasemi2, Hassan Torabzadeh3
1Department of Restorative Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
Hydrogen peroxide gel offers a more potent tooth whitening effect compared to ozone treatment. Combining ozone with hydrogen peroxide does not enhance its bleaching efficacy.
Area of Science:
- Dental materials science
- Aesthetic dentistry
Background:
- Limited data exists on ozone's tooth whitening capabilities.
- This study investigates ozone's bleaching effect versus traditional office bleaching.
Purpose of the Study:
- To compare the tooth whitening efficacy of ozone therapy with hydrogen peroxide bleaching.
- To evaluate the synergistic effect of combining ozone and hydrogen peroxide for tooth whitening.
Main Methods:
- Maxillary premolar teeth sections were stained with tea.
- Three groups were established: hydrogen peroxide bleaching, ozone treatment, and a combination therapy.
- Color changes (ΔE, L, a, b) were measured using digital imaging and CIE lab index.
Main Results:
- Hydrogen peroxide bleaching (Group I) and combination therapy (Group III) showed significantly greater color change (ΔE) than ozone treatment alone (Group II).
- No significant difference in color change was observed between hydrogen peroxide bleaching and the combination therapy.
- Ozone treatment alone resulted in a significantly lower color change compared to the other groups.
Conclusions:
- Hydrogen peroxide gel demonstrates a more effective tooth whitening outcome than ozone.
- Ozone does not provide a synergistic whitening effect when used concurrently with hydrogen peroxide.
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