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Dentin hypersensitivity after teeth bleaching with in-office systems. Randomized clinical trial
Javier Martin1, Eduardo Fernandez, Valeria Bahamondes
1Department of Restorative Dentistry, School of Dentistry, University of Chile, Sergio Livingston 943, Independencia, Santiago, Chile.
American Journal of Dentistry
|June 4, 2013
Summary
This study found no significant differences in dentin hypersensitivity among three in-office bleaching systems using varying hydrogen peroxide concentrations and light activation. All methods resulted in temporary sensitivity increases post-treatment.
Area of Science:
- Dentistry
- Dental Materials Science
- Clinical Research
Background:
- Dentin hypersensitivity is a common concern following dental bleaching procedures.
- In-office bleaching systems utilize varying concentrations of hydrogen peroxide and may employ light activation to enhance efficacy.
- Understanding the impact of different bleaching protocols on tooth sensitivity is crucial for patient management and treatment selection.
Purpose of the Study:
- To prospectively compare dentin hypersensitivity in a randomized clinical trial after treatment with three in-office bleaching systems.
- To evaluate the effect of different hydrogen peroxide concentrations and light activation on post-bleaching tooth sensitivity.
Main Methods:
- A randomized clinical trial involving 88 individuals compared three in-office bleaching systems with varying hydrogen peroxide concentrations (15% and 35%) and light activation.
- Dentin sensitivity was assessed using a visual analogue scale (VAS) at baseline, immediately after, and at 7 and 30 days post-treatment.
- Statistical analysis included Kruskal-Wallis and Mann-Whitney tests to compare sensitivity levels between groups.
Main Results:
- All bleaching groups experienced increased dentin sensitivity immediately after treatment.
- No statistically significant differences in sensitivity were observed between the groups at 7 and 30 days post-treatment.
- Group 1 (15% hydrogen peroxide with light activation) showed minimal changes relative to baseline, though not statistically significant.
Conclusions:
- The in-office bleaching systems evaluated, regardless of hydrogen peroxide concentration or light activation, result in comparable levels of dentin hypersensitivity in the short to medium term.
- Temporary post-bleaching sensitivity is a common outcome across different in-office bleaching protocols.
- Further research may explore long-term sensitivity outcomes and patient-reported comfort levels.
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