Journal article
Chemical interaction of 10-MDP (methacryloyloxi-decyl-dihydrogen-phosphate) in zinc-doped self-etch adhesives
Journal of dentistry, Vol.42(3), pp.359-365
03/01/2014
DOI: 10.1016/j.jdent.2014.01.003
PMID: 24418207
Abstract
Objectives: Zinc-doped dentine adhesives have been recently advocated to interfere with metallo-proteinases-mediated collagen degradation. Nevertheless, there is a little information about the effects of zinc ions on the chemical interaction of self-etch functional monomers to dentine. The aim of this study was to assess if the inclusion of zinc into the primers of self-etch adhesives containing MDP (10-methacryloyloxi-decyl-dihydrogen-phosphate) may interfere with their chemical interaction to calcium/dentine.
Methods: Caries-free human molars were bonded using two commercial self-etching adhesives [Clearfil SE bond (CSE) and S3 bond (S3)] doped with zinc nitrate and submitted to microtensile bond strength (mu TBS) and interface nanoleakage evaluation. Moreover, MDP was synthesised to evaluate the chemical interaction with calcium/dentine through atomic absorption spectroscopy (AAS) and SEM-EDX in the presence or absence of zinc ions.
Results: AAS showed increasing formation of MDP-zinc rather than MDP-calcium salts (p = 0.002) in the presence of zinc. SEM-EDX confirmed the formation of zinc-rich phosphate deposits that were probably responsible for the significant reduction in mu TBS and increased interfacial nanoleakage attained with zinc-doped CSE and S3.
Conclusion: These outcomes demonstrated that the excessive presence of zinc ions may jeopardise the bonding performance of MDP-containing self-etch adhesives. (C) 2014 Elsevier Ltd. All rights reserved.
Details
- Title: Subtitle
- Chemical interaction of 10-MDP (methacryloyloxi-decyl-dihydrogen-phosphate) in zinc-doped self-etch adhesives
- Creators
- Victor P. Feitosa - Universidade Estadual de Campinas (UNICAMP)Cesar Pomacondor-Hernandez - Universidade Estadual de Campinas (UNICAMP)Fabricio A. Ogliari - Universidade Federal de PelotasFernanda Leal - Universidade Federal de PelotasAmerico B. Correr - Universidade Estadual de Campinas (UNICAMP)Salvatore Sauro - Universidad Cardenal Herrera CEU
- Resource Type
- Journal article
- Publication Details
- Journal of dentistry, Vol.42(3), pp.359-365
- Publisher
- Elsevier
- DOI
- 10.1016/j.jdent.2014.01.003
- PMID
- 24418207
- ISSN
- 0300-5712
- eISSN
- 1879-176X
- Number of pages
- 7
- Grant note
- 6850-12-0 / Capes-Brazil; Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior (CAPES)
- Language
- English
- Date published
- 03/01/2014
- Academic Unit
- Operative Dentistry
- Record Identifier
- 9984655344702771
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