Your browser doesn't support javascript.
loading
Effect of dental bleaching after bracket bonding and debonding using three different adhesive systems
Gomes, Lucianna de Oliveira; Mathias, Paula; Rizzo, Patricia; Araújo, Telma Martins de; Cangussu, Maria Cristina Teixeira.
  • Gomes, Lucianna de Oliveira; Federal University of Bahia. Graduate Program in Orthodontics.
  • Mathias, Paula; Federal University of Bahia. Graduate Program in Orthodontics.
  • Rizzo, Patricia; Federal University of Bahia. Graduate Program in Orthodontics.
  • Araújo, Telma Martins de; Federal University of Bahia. Graduate Program in Orthodontics.
  • Cangussu, Maria Cristina Teixeira; Federal University of Bahia. Graduate Program in Orthodontics.
Dental press j. orthod. (Impr.) ; 18(2): 61-68, Mar.-Apr. 2013. graf, tab
Article in English | LILACS | ID: lil-683185
ABSTRACT

OBJECTIVE:

To evaluate the influence of bonding and debonding of orthodontic brackets on dental in-home bleaching, taking into account three different adhesive systems.

METHODS:

Forty-four bovine incisors were divided into four groups according to the primer system used for orthodontic bracket bonding. Following the debonding of orthodontic brackets, the teeth were stored in staining solution for 96 hours. Then, teeth were whitened using 10% carbamide peroxide for two weeks at a 6-hour-a-day regime. Standardized digital photographs were taken at the following intervals T0 (initial); T1 (after debonding); T2 (after pigmentation); T3, T4 and T5 representing 1, 7, and 14 days of bleaching. Repeatability and stability tests were carried out to check the method accuracy. Images were analyzed using Adobe Photoshop 7.0 software considering (L*a*b*)color coordinate values and a modified color difference total (Δ;E').

RESULTS:

The results of this study (ANOVA and Tukey; p < 0.01) demonstrated that after 7 days of bleaching, experimental groups showed significantly less teeth whitening compared to the control group. However, there were no significant color differences between the groups after 14 days, according to values of lightness (L*).

CONCLUSIONS:

Regardless of the adhesive primer system applied, bonding and debonding of orthodontic brackets alters the outcome of tooth whitening in the first 7 days of bleaching, however it has no influence on the whitening of the dental structure after 14 days of in-home dental bleaching with 10% carbamide peroxide.
RESUMO

OBJETIVO:

o objetivo desse estudo foi avaliar a influência da colagem e descolagem de braquetes ortodônticos no clareamento caseiro, considerando três diferentes sistemas adesivos.

MÉTODOS:

quarenta e quatro incisivos bovinos foram divididos em quatro grupos, de acordo com o sistema adesivo utilizado para colagem dos braquetes. Após a descolagem dos braquetes, os dentes foram pigmentados por 96 horas e depois clareados com peróxido de carbamida a 10% por 6 horas diárias, durante duas semanas. Foram realizadas fotografias digitais padronizadas nos tempos T0 (inicial); T1 (após descolagem); T2 (após pigmentação); T3, T4 e T5 representando 1, 7 e 14 dias de clareamento. Testes de repetitividade e de estabilidade foram realizados para avaliar a acurácia do método. As imagens foram avaliadas pelo software Adobe Photoshop 7.0, considerando os parâmetros de cor (L*a*b*) e a diferença total de cor adaptada para esse estudo (Δ;E').

RESULTADOS:

os resultados do presente estudo (ANOVA e Tukey; p < 0,01) demonstraram que, após uma semana de clareamento, os grupos experimentais apresentaram uma resposta mais lenta ao clareamento que o grupo controle. Contudo, após 14 dias, não houve diferença cromática significativa entre os grupos, observada pelos valores de luminosidade (L*).

CONCLUSÕES:

independentemente do sistema adesivo utilizado, a colagem e descolagem de braquetes ortodônticos altera os resultados de obtenção de cor com sete dias de avaliação. Contudo, após 14 dias não se observa nenhuma diferença de cor na estrutura dentária clareada pela técnica caseira.
Subject(s)


Full text: Available Index: LILACS (Americas) Main subject: Peroxides / Tooth Bleaching / Urea / Dental Bonding / Orthodontic Brackets / Dental Debonding / Dental Cements / Tooth Bleaching Agents Limits: Animals Language: English Journal: Dental press j. orthod. (Impr.) Journal subject: Orthodontics Year: 2013 Type: Article Affiliation country: Brazil

Similar

MEDLINE

...
LILACS

LIS


Full text: Available Index: LILACS (Americas) Main subject: Peroxides / Tooth Bleaching / Urea / Dental Bonding / Orthodontic Brackets / Dental Debonding / Dental Cements / Tooth Bleaching Agents Limits: Animals Language: English Journal: Dental press j. orthod. (Impr.) Journal subject: Orthodontics Year: 2013 Type: Article Affiliation country: Brazil