Related Experiment Video
Updated: Jul 12, 2025
Adjunctive Diode Laser Therapy and Probiotic Lactobacillus Therapy in the Treatment of Periodontitis and Peri-Implant Disease
Published on: May 9, 2022
In-office dental bleaching in adolescents using 6% hydrogen peroxide with different application tips: randomized
Taynara de Souza Carneiro1,2, Michael Willian Favoreto1, Michel Wendlinger Cantanhede Ferreira1
1Universidade Estadual de Ponta Grossa , Departamento de Dentística Restauradora , Ponta Grossa , Brasil .
In-office bleaching with 6% hydrogen peroxide (HP) effectively brightens teeth in adolescents, improving aesthetic self-perception. While both application tips yielded similar results, the tip without a brush showed a slight edge in whitening, though the tip with a brush was associated with less tooth sensitivity.
Area of Science:
- Dental science
- Cosmetic dentistry
Background:
- In-office bleaching with 6% hydrogen peroxide (HP) is available but not widely studied in adolescents.
- Commercial HP gels utilize applicator tips, with some featuring brushes designed for thin-layer application.
Purpose of the Study:
- To evaluate the efficacy of 6% HP in-office bleaching in adolescents.
- To compare different applicator tip designs (with and without brush).
- To assess tooth sensitivity (TS) and aesthetic self-perception post-bleaching.
Main Methods:
- A randomized, split-mouth, double-blind clinical trial involving 60 adolescent participants.
- Three 50-minute in-office bleaching sessions using 6% HP gel with either a brush or no-brush applicator tip.
- Color change measured via spectrophotometry (ΔE ab, ΔE 00, ΔWI D) and color guide (ΔSGU).
- Tooth sensitivity assessed using a visual analogue scale; aesthetic self-perception evaluated with the oral aesthetic scale.
Main Results:
- Both applicator tips achieved comparable bleaching outcomes (p>0.05).
- The tip without a brush showed a significant difference in ΔWI D at 3 weeks and 1 month.
- Tooth sensitivity was reported by 45% (no brush) and 33% (with brush) of participants, with low intensity.
- All participants reported improved aesthetic self-perception post-bleaching.
Conclusions:
- In-office bleaching with 6% HP is effective for adolescents, enhancing aesthetic self-perception regardless of the applicator tip used.
- The applicator tip with a brush may be associated with a reduced risk of tooth sensitivity.
