| Autor: |
de Paula, Alexandra M., Hanzen, Taíse Alessandra, de Andrade, Heloísa Forville, Grokoski, Eduardo, Loguercio, Alessandro D., Reis, Alessandra |
| Předmět: |
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| Zdroj: |
Journal of Esthetic & Restorative Dentistry; Mar2023, Vol. 35 Issue 2, p360-367, 8p, 1 Diagram, 4 Charts |
| Abstrakt: |
Objective: Few studies evaluated low concentrations of hydrogen peroxide protocols. The aim of this paper was evaluated two application protocols using 4% hydrogen peroxide in at‐home bleaching. Materials and Methods: Eighty‐six patients with upper canines' shade A2 or darker were randomly allocated under two experimental conditions: two daily applications of 1 h each or a 2‐h single application. Color change was evaluated using Vita Classical, Vita Bleachedguide, and digital spectrophotometer weekly and 1 month after the bleaching procedure through one‐way ANOVA. The risk and intensity of tooth sensitivity (TS) was assessed through visual and numeric rating scale and measured by Fisher's exact test, Mann–Whitney test and one‐way ANOVA respectively. Results: After 3 weeks, the mean difference for the ΔSGU Vita Classical (1.0; 95% CI −0.1 to 2.0), ΔEab (0.7; 95% CI −1.4 to 2.8), ΔE00 (0.1; 95% CI −1.4 to 1.6) and Wi (1.8; 95% CI ‐1.9 to 5.5) presented no difference (p > 0.08). The relative risk for TS was 0.91 (0.72 to 1.14) without significant difference neither in the risk (p = 0.6) nor in the TS intensity for both pain scales (p > 0.65). Conclusions: The application protocols evaluated (two daily applications of 1 h each or a 2‐h single application) for at‐home bleaching with 4% hydrogen peroxide did not showed differences in color change and tooth sensitivity. Clinical Relevance: Higher amount of active hydrogen peroxide in two daily applications for at‐home bleaching neither accelerate bleaching nor increase the risk or intensity of tooth sensibility. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
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