Enhancing bond strength on demineralized dentin by pre-treatment with selective remineralising agents.
J Mech Behav Biomed Mater
; 81: 214-221, 2018 05.
Article
em En
| MEDLINE
| ID: mdl-29550716
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 Paste™-(CPP-ACP) and the self-assembling peptide 'P11-4' (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 P11-4 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). P11-4 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 P11-4 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.
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Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Dentina
/
Fenômenos Mecânicos
/
Minerais
Limite:
Humans
Idioma:
En
Ano de publicação:
2018
Tipo de documento:
Article