Does the time interval after bleaching influence the adhesion of orthodontic brackets?

Glaucia Cristina Rodrigues; Cyndi Albuquerque de Miranda; Sissy Maria Mendes Machado; Gustavo Antonio Martins Brandão; Haroldo Amorim de Almeida; Cecy Martins Silva

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자료유형: 학술저널

저자정보: Glaucia Cristina Rodrigues (Federal University of Para) Cyndi Albuquerque de Miranda (Federal University of Para) Sissy Maria Mendes Machado (Federal University of Para) Gustavo Antonio Martins Brandão (Federal University of Para) Haroldo Amorim de Almeida (Federal University of Para) Cecy Martins Silva (Federal University of Para)

저널정보: 대한치과교정학회 대한치과교정학회지 대한치과교정학회지 제43권 제5호

발행연도: 2013.10

수록면: 242 - 247 (6page)

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Objective: To test the null hypothesis that no difference exists between the effects of at-home bleaching and in-office bleaching on shear bond strength (SBS) with bracket bonding at 4 different time intervals after dental bleaching. Methods: Ninety extracted human premolars were randomly divided into 9 groups (n = 10) according to the bleaching methods used (at-home bleaching and in-office bleaching) and the storage time in artificial saliva (30 min, 1 day, 2 weeks, and 3 weeks before bonding). The control group was stored in artificial saliva for 7 days. Brackets were bonded with the Transbond XT adhesive system, and SBS testing was performed. The adhesive remnant index (ARI) was used to assess the amount of resin remaining on the enamel surfaces after debonding. The SBS data were analyzed by analysis of variance (ANOVA) and the Tukey test. For the ARI, the Kruskal-Wallis test was performed. Significance for all statistical tests was predetermined to be p < 0.05. Results: The SBS of the unbleached group was significantly higher (p < 0.05) than that of the bleached groups (except for the group bonded 30 min after at-home bleaching). Conclusions: The null hypothesis was not totally rejected. All bleaching groups tested had decreased SBS of the brackets to the enamel, except for the group bonded 30 min after at-home bleaching. The SBS returned to values close to those of the unbleached enamel within 3 weeks following bleaching.

#Bracket #Bonding #Biomaterial science #Bleaching

참고문헌 (27)

참고문헌 신청

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