| The role of acrylophosphonic acid monomers in the formation of hybrid layers based on self-etch adhesives. | |
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MedLine Citation:
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PMID: 17113698 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The role of acrylophosphonic acid monomers in the formation of hybrid layers based on self-etch adhesives. OBJECTIVES: Our plan was to define the reaction products formed when an acrylophosphonic acid reacts with tooth hard tissue. Our aim was to describe the incorporation of the reaction products in the hybrid layer formed. METHODS: Potentiometric methods were used to measure acid dissociation constants and investigate calcium complex formation. Infrared spectroscopy and NMR were used to follow water contents and show transformation of phosphorous containing compounds. RESULTS: The acrylophosphonic acid contained in AdheSE (Ivoclar Vivadent, Schaan, Liechtenstein) is characterized by two acidities with pK(a1)=2.4 and pK(a2)=7.0, and interacts with calcium ions in a purely ionic fashion. When hydroxyapatite crystals are dissociated by the presence of AdheSE, brushite is formed together with a calcium cross-linked network of the phosphonate containing copolymer. CONCLUSION: The results give a new image of the hybrid layer where the adhesive behaves like an ionomer resin incorporating collagen but also minerals and salt bridges. |
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Authors:
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Marie A Bayle; Geneviève Grégoire; Patrick Sharrock |
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Publication Detail:
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Type: Journal Article Date: 2006-11-20 |
Journal Detail:
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Title: Journal of dentistry Volume: 35 ISSN: 0300-5712 ISO Abbreviation: J Dent Publication Date: 2007 Apr |
Date Detail:
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Created Date: 2007-03-07 Completed Date: 2007-07-02 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0354422 Medline TA: J Dent Country: England |
Other Details:
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Languages: eng Pagination: 302-8 Citation Subset: D; IM |
Affiliation:
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Department of Biomaterials, Faculty of Odontology, University Toulouse III, 3 Chemin des Maraîchers, 31062 Toulouse, Cedex 4, France. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Acid Etching, Dental* Acrylic Resins / chemistry* Dentin / chemistry Dentin Permeability* Dentin-Bonding Agents / chemistry* Fibrillar Collagens / chemistry Humans Hydroxyapatites / chemistry Magnetic Resonance Spectroscopy Molar, Third Phase Transition Phosphonic Acids / chemistry* Potentiometry Resin Cements / chemistry* Spectroscopy, Fourier Transform Infrared |
| Chemical | |
Reg. No./Substance:
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0/Acrylic Resins; 0/AdheSE cement; 0/Dentin-Bonding Agents; 0/Fibrillar Collagens; 0/Hydroxyapatites; 0/Phosphonic Acids; 0/Resin Cements |
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