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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

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

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Author(s):
Moda, Mariana Dias [1] ; Fagundes, Ticiane Cestari [1] ; Fraga Briso, Andre Luiz [1] ; dos Santos, Paulo Henrique [2]
Total Authors: 4
Affiliation:
[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
Total Affiliations: 2
Document type: Journal article
Source: PLoS One; v. 13, n. 11 NOV 26 2018.
Web of Science Citations: 1
Abstract

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)

FAPESP's process: 14/11734-8 - Analysis of bonding interface between self-adhesive resin cement to in vitro eroded dentin
Grantee:Mariana Dias Moda
Support type: Scholarships in Brazil - Master