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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Analysis of the bond interface between self-adhesive resin cement to eroded dentin in vitro

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Autor(es):
Moda, Mariana Dias [1] ; Fagundes, Ticiane Cestari [1] ; Fraga Briso, Andre Luiz [1] ; dos Santos, Paulo Henrique [2]
Número total de Autores: 4
Afiliação do(s) autor(es):
[1] UNESP Sao Paulo State Univ, Aracatuba Dent Sch, Dept Restorat Dent, Aracatuba, SP - Brazil
[2] UNESP Sao Paulo State Univ, Aracatuba Dent Sch, Dept Dent Mat & Prosthodont, Aracatuba, SP - Brazil
Número total de Afiliações: 2
Tipo de documento: Artigo Científico
Fonte: PLoS One; v. 13, n. 11 NOV 26 2018.
Citações Web of Science: 1
Resumo

The purpose of this study was to evaluate the bonding interface between a self-adhesive resin cement to in vitro eroded dentin. Seventy-two third molars were used and divided into two groups: sound dentin and in vitro eroded dentin. The in vitro erosion was performed following a demineralization protocol, in which the specimens were immersed in a demineralizing solution for 2 minutes per cycle and remineralizing solution for 10 minutes per cycle for 9 days. Both groups were submitted to four dentin surface treatments: control group (without any treatment), 2% chlorhexidine, 20% polyacrylic acid, and 0.1 M EDTA (n = 9). Blocks of resin-based composite were bonded with RelyX U200 self-adhesive resin cement applied on the pretreated dentin surfaces. The teeth were sectioned into beams (1mm(2)) and submitted to microtensile bond strength testing to evaluate the bond strength of self-adhesive resin cement to dentin after 24 hours and 8 months of immersion in artificial saliva. Three specimens of each group were longitudinally cut and evaluated using confocal laser scanning microscopy to analyze the dentin/cement interface. Eroded dentin showed higher bond strength values when compared to sound dentin for the 2% chlorhexidine group (p = 0.03), 24 hours after adhesion. When considering eroded dentin, the 0.1M EDTA group showed higher bond strength values with a statistically significant difference only for the control group (p = 0.002). After 8 months of storage, the present results showed that there was no statistically significant difference between the two substrates for all experimental groups (p>0.05). Analysis of the microscopy confocal showed different types of treatments performed on dentin generally increased tags formation when compared to the control group. The eroded dentin showed a significant increase in density and depth of resinous tags when compared to sound dentin. The storage of samples for 8 months seems to have not caused significant degradation of the adhesive interface. (AU)

Processo FAPESP: 14/11734-8 - Análise da interface de união entre cimento resinoso auto-adesivo à dentina erodida in vitro
Beneficiário:Mariana Dias Moda
Linha de fomento: Bolsas no Brasil - Mestrado