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Clinical performance of vital bleaching techniques
Jussara K Bernardon1, Neimar Sartori, Andressa Ballarin
1Department of Operative Dentistry, Universidade Federal de Santa Catarina, Florianópolis, SC, Brazil. jussara_bernardon@yahoo.com.br
Operative Dentistry
|February 20, 2010
Summary
At-home bleaching with carbamide peroxide combined with in-office bleaching yielded the best initial tooth whitening results. In-office bleaching methods caused more tooth sensitivity than at-home treatments.
Area of Science:
- Dental materials science
- Cosmetic dentistry
- Clinical research
Background:
- Vital tooth bleaching is a common cosmetic procedure.
- Various techniques exist, including at-home and in-office methods, with differing protocols and materials.
- Optimizing clinical outcomes and patient comfort remains an area of investigation.
Purpose of the Study:
- To compare the clinical effectiveness and tooth sensitivity of different vital tooth bleaching techniques.
- To evaluate color change and rebound over a 16-week period for various bleaching protocols.
Main Methods:
- Ninety subjects with A2 or darker anterior teeth were enrolled in a split-mouth study.
- Three groups compared: at-home bleaching (HB) vs. in-office bleaching with light (OBL); in-office bleaching without light (OB) vs. OBL; HB vs. combination (one in-office session + HB).
- Color change (deltaE) measured via spectrophotometer and shade guide; tooth sensitivity assessed using a Visual Analog Scale (VAS).
Main Results:
- The combination of one in-office session followed by at-home bleaching (Group III) showed the lowest color values (most whitening) at the one-week evaluation.
- Light irradiation did not significantly enhance in-office bleaching efficacy (OB = OBL).
- In-office bleaching (OBL and OB) resulted in higher tooth sensitivity rates compared to at-home bleaching (HB).
Conclusions:
- A combined approach of in-office and at-home bleaching provides superior initial whitening results.
- At-home bleaching is associated with lower tooth sensitivity compared to in-office techniques.
- Light irradiation does not appear to be a critical factor in the efficacy of in-office hydrogen peroxide bleaching.
