Controlled clinical trial addressing teeth whitening with hydrogen peroxide in adolescents: a 12-month follow-up

Abstract

OBJECTIVES:To evaluate the colorimetric change in incisors and canines of adolescents aged 12 to 20 years submitted to at-home whitening and to evaluate satisfaction, sensitivity and discomfort during the procedures through a questionnaire.METHOD:Thirty adolescents were randomly assigned to the following groups: 1) 6.0% hydrogen peroxide (White Class with calcium – FGM); 2) 7.5% hydrogen peroxide (White Class with calcium - FGM); 3) 10% hydrogen peroxide (Oral B 3D White – Oral-B); 4) Control group – placebo. Assessments were performed prior to treatment as well as at 7, 30, 180 and 360 days after treatment. Friedman’s ANOVA was used to analyze color. The Kruskal-Wallis test followed by Dunn’s post hoc test was used to compare the groups at the different evaluation times. Answers on the questionnaires were ranked, and non-parametrical tests were employed. The groups were compared in each period using the Kruskal-Wallis test followed by the Student-Newman-Keuls test. Categorical data were analyzed using Fisher's exact test, and the Wilcoxon test was used for the analysis of different periods. P-values were corrected using the Hyan-Holm step-down Bonferroni procedure. Clinicaltrials.gov: NCT01998386.RESULTS:Similar results were obtained one month after treatment with both tooth whitening gels and whitening strips. Patients were partially satisfied with the treatment after the first and second weeks and would recommend it. All products demonstrated color stability after 12 months of follow-up.CONCLUSIONS:The bleaching procedure was efficient, and the patients could perceive its result. Further investigations are needed to determine the effects of bleaching on young teeth.

Bleaching efficacy of at home 16% carbamide peroxide. A long‐term clinical follow‐up study

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Effect of low‐level laser therapy combined with 5000 parts per million fluoride dentifrice on postbleaching sensitivity: A clinical, randomized, and double‐blind study

“…Evaluations of dentinal desensitization mechanisms during bleaching treatment are increasing in the current scientific literature through the use of different approaches and methodologies . This clinical study used a method known as split‐mouth.…”

“…43 Evaluations of dentinal desensitization mechanisms during bleaching treatment are increasing in the current scientific literature through the use of different approaches and methodologies. [44][45][46] This clinical study used a method known as split-mouth. Some advantages can be highlighted when comparing split-mouth to parallel studies, such as the need for a smaller sample size.…”

Clareamento Dental, Protocolo de aplicação em dentes vitais: Uma Revisão da Literatura / Tooth Whitening, Vital Teeth Application Protocol: A Literature Review

“…Um erro na determinação da tonalidade exata dos dentes pode ocorrer devido às limitações na seleção de cores com base no guia de tonalidades disponível, em comparação com a grande variedade possível de cores naturais dos dentes (REINHARDT et al, 2019). O olho humano, a luz ambiente, bem como as influências ambientais diretas e indiretas, são fatores que sempre influenciam subjetivamente a determinação da tonalidade dos dentes (PINTO et al, 2017). O spectroshade é uma nova tecnologia de medição baseada na de um espectrofotômetro, além da moderna funcionalidade de LED.…”