Effect of Daily Usage Time of 4% Hydrogen Peroxide on the Efficacy and Bleaching-induced Tooth Sensitivity: A Single-blind Randomized Clinical Trial
| Autor: | L Vochikovski, Elisama Sutil, Alessandra Reis, K L da Silva, Márcia Rezende, Alessandro Dourado Loguercio, Rmo Terra |
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| Rok vydání: | 2019 |
| Předmět: |
Adult
business.industry Visual analogue scale Absolute risk reduction Dentistry Hydrogen Peroxide Dentin Sensitivity law.invention Patient satisfaction Treatment Outcome Randomized controlled trial Rating scale law Tooth Sensitivity Tooth Bleaching Medicine Humans Single-Blind Method Single blind business Tooth Bleaching Agents General Dentistry Anterior teeth |
| Zdroj: | Operative dentistry. 46(4) |
| ISSN: | 1559-2863 |
| Popis: | SUMMARY Objective Compare the risk/intensity of tooth sensitivity (TS) and color change of a 30-minute vs. the recommended 120-minute application time of 4% hydrogen peroxide (HP) for at-home bleaching. Methods A single-blind, parallel, randomized clinical trial was conducted with 92 adult patients with caries and restoration-free anterior teeth A2 or darker, randomly allocated to two groups. Bleaching trays containing 4% HP were used for three-weeks. A four-week regimen was also offered to the patients for the 30-min group after the end of the 3-week protocol. The color change was assessed with the Vita Classical (VITA Zahnfabrik, Bad Säckingen, Germany) and Vita Bleachedguide shade guides (VITA Zahnfabrik) and the Vita Easyshade spectrophotometer (VITA Zahnfabrik) at baseline, weekly, and 30 days after the bleaching. The absolute risk and the intensity of TS were assessed daily using the 0–10 visual analogue scale (VAS) and 5-point Numerical Rating Scale (NRS) scale, and patient satisfaction was recorded with a Likert 0–7 scale. Risk of TS (Fisher’s test), intensity of TS in NRS scale (Mann-Whitney test), VAS scale (t-test), and a color change (t-test) were compared. Results The 30-minute group saw color change of around 1 SGU inferior to the 120-minute group in all-time assessments (p0.05). Patient satisfaction was high for both groups (p>0.05). Conclusions A four-week protocol of at-home dental bleaching with 4% HP for 30 minutes/day whitened teeth similarly to the 120 minutes/day protocol, with low intensity of dental sensitivity and high patient satisfaction. |
| Databáze: | OpenAIRE |
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