Effectiveness of Dental Bleaching Gels on Enamel
Author Information
Author(s): Veneri Federica, Cavani Francesco, Bolelli Giovanni, Checchi Vittorio, Bizzi Alessia, Setti Giacomo, Generali Luigi, Pessanha Sofia
Primary Institution: University of Modena and Reggio Emilia
Hypothesis
Do different bleaching agents affect whitening effectiveness, pH variation, and enamel surface roughness?
Conclusion
Higher concentrations of hydrogen peroxide lead to better whitening results, while lower concentrations of carbamide peroxide are less effective.
Supporting Evidence
- HP 40% and HP 35% had similar whitening effectiveness.
- CP 16% showed significantly lower whitening results.
- HP 40% caused a significant decrease in pH.
- Surface roughness decreased slightly in all groups after bleaching.
Takeaway
This study tested different teeth whitening gels to see which worked best and found that stronger gels made teeth whiter but could also change the surface of the teeth more.
Methodology
42 human enamel specimens were treated with three different bleaching agents, and their color changes, pH variations, and surface roughness were measured.
Potential Biases
Potential bias due to the controlled environment and sample selection from a biobank.
Limitations
The study was in vitro, lacking the effects of saliva and pulp pressure, and did not account for pre-existing conditions of the teeth.
Participant Demographics
Human enamel specimens from extracted teeth.
Statistical Information
P-Value
0.004 for CP 16% vs HP 40% and 0.001 for CP 16% vs HP 35%
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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