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Tooth whitening: facts and fallacies.

H O Heymann1

  • 1Department of Operative Dentistry, School of Dentistry, University of North Carolina at Chapel Hill, NC, USA.

British Dental Journal
|April 26, 2005
PubMed
Summary
This summary is machine-generated.

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Tooth whitening techniques, including nightguard vital bleaching, over-the-counter strips, and in-office treatments, all achieve similar results. The efficacy of any tooth bleaching method depends on the concentration of the bleaching agent and the duration of its application.

Area of Science:

  • Dentistry
  • Dental Materials

Background:

  • The interest in tooth whitening has surged since the introduction of nightguard vital bleaching in 1989.
  • A common question in dentistry is which tooth whitening technique yields the best results.

Purpose of the Study:

  • To evaluate the efficacy of different tooth whitening techniques.
  • To determine the key factors influencing the success of tooth bleaching treatments.

Main Methods:

  • Comparison of various bleaching agents: nightguard vital bleaching (10% carbamide peroxide/3% hydrogen peroxide), over-the-counter (OTC) whitening strips (6% hydrogen peroxide), and in-office bleaching (25-35% hydrogen peroxide).
  • Analysis of the mechanism of action for different whitening approaches.

Main Results:

Related Experiment Videos

  • All tested tooth whitening methods demonstrate potential for similar end results.
  • The primary mechanism of action across all techniques is the oxidation of organic pigments (chromogens) within the tooth structure.
  • While some methods are faster due to higher concentrations or longer exposure, the fundamental efficacy is comparable.

    • Conclusions:

    • The concentration of the bleaching agent and the duration of exposure are the most critical factors determining the efficacy of any tooth bleaching treatment.
    • Different tooth whitening approaches can achieve comparable outcomes by utilizing the same oxidative mechanism.