Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7207128 | Journal of the Mechanical Behavior of Biomedical Materials | 2018 | 29 Pages |
Abstract
Bonding to demineralized dentin of a diseased tooth has shown to be a significant clinical issue. This study evaluated the effect of 0.2% NaF-(NaF), MI Pasteâ¢-(CPP-ACP) and the self-assembling peptide 'P11â4â² (Ace-QQRFEWEFEQQ-NH2) contained in Curodont⢠Repair, have on microtensile bond strength-(µTBS) of two different adhesive systems (Adper⢠Single Bond-(SB) or Clearfil⢠SE Bond (CSE)) and wettability of demineralized dentin slices after remineralising agents were applied. The highest µTBS were found for the demineralized dentin-(DD) treated with CPP-ACP; both adhesives systems (pâ¯<â¯0.05) did not significantly difference from P11-4 treatment associated with SB, and also presented higher values than sound dentin-(SD/SB) (pâ¯<â¯0.01). DD treated with P11â4 associated with CSE did not differ from DD/CSE (pâ¯>â¯0.05). The NaF treatment associated with CSE recovered the bond strength values of SD/CSE and associated with CSE demonstrated lower µTBS than other groups, although significantly higher than DD (pâ¯<â¯0.05). P11â4 and CPP-ACP increased significantly the wettability of demineralized dentin (pâ¯<â¯0.05); etching acid improved wettability for all groups (pâ¯<â¯0.05), whilst NaF did not affect the wettability of demineralized dentin (pâ¯>â¯0.05). Morphological analysis of the dentin surface and dentin-resin interface revealed unique features of the applied remineralizing agent. The results indicated that self-assembling peptide P11â4 associated with SB and CPP-ACP associated with SB or CSE significantly enhanced the bond strength to demineralized dentin (pâ¯<â¯0.05). We conclude that by modifying the dentine surface and restoring conditions found on sound dentin, this can enhance the interfacial bonding.
Related Topics
Physical Sciences and Engineering
Engineering
Biomedical Engineering
Authors
Luiz Filipe Barbosa-Martins, Jossaria Pereira de Sousa, Aline Rogéria Freire de Castilho, Julia Puppin-Rontani, Robert P.W. Davies, Regina Maria Puppin-Rontani,