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Zinc-Containing Restorations Create Amorphous Biogenic Apatite at the Carious Dentin Interface: A X-Ray Diffraction (XRD) Crystal Lattice Analysis
dc.contributor.author | Toledano Pérez, Manuel | es_ES |
dc.contributor.author | Sánchez Aguilera, Fátima | es_ES |
dc.contributor.author | López López, Modesto Torcuato | es_ES |
dc.contributor.author | Osorio Ruiz, María Estrella | es_ES |
dc.contributor.author | Toledano Osorio, Manuel | es_ES |
dc.contributor.author | Osorio Ruiz, Raquel | es_ES |
dc.date.accessioned | 2017-06-08T07:24:01Z | |
dc.date.available | 2017-06-08T07:24:01Z | |
dc.date.issued | 2016-10 | |
dc.identifier.citation | Toledano Pérez, M.; et al. Zinc-Containing Restorations Create Amorphous Biogenic Apatite at the Carious Dentin Interface: A X-Ray Diffraction (XRD) Crystal Lattice Analysis. Microscopy and Microanalysis, 22(5): 1034-1046 (2016). [http://hdl.handle.net/10481/46738] | es_ES |
dc.identifier.issn | 1431-9276 | |
dc.identifier.issn | 1435-8115 | |
dc.identifier.uri | http://hdl.handle.net/10481/46738 | |
dc.description.abstract | The aim of this research was to assess the ability of amalgam restorations to induce amorphous mineral precipitation at the caries-affected-dentin substrate. Sound and caries-affected dentin surfaces were subjected to both Zn-free and Zn-containing dental amalgam restorations. Specimens were submitted to thermocycling (100,000cy/5 ºC-55 ºC, 3 months). Dentin surfaces were studied by atomic force microscopy (AFM/nano-roughness), X-ray diffraction (XRD2), field emission electron microscopy (FESEM) and energy-dispersive analysis (EDX), for physical and morphological surface characterization. Zn-containing amalgam placement reduced crystallinity, crystallite size and grain size of calcium phosphate crystallites at the dentin surface. Both microstrain and nanoroughness augmented in caries-affected dentin restored with Zn-containing amalgams. Caries-affected dentin showed the shortest mineral crystallites (11.04 nm), when Zn-containing amalgams were used for restorations, probably leading to a decrease of mechanical properties which might favor crack propagation and deformation. Sound dentin restored with Zn-free amalgams exhibited a substantial increase in length of grain particles (12.44 nm) embedded into dentin crystallites. Zn-containing amalgam placement creates dentin mineralization and the resultant mineral was, utterly, amorphous in nature. Amorphous calcium phosphate will provide a local ion-rich environment which is considered favorable for in situ generation of prenucleation clusters, succeeding further dentin remineralization. | en_EN |
dc.description.sponsorship | This work was supported by grants MINECO/FEDER MAT2014-52036-P and FIS2013-41821-R. | es_ES |
dc.language.iso | eng | es_ES |
dc.publisher | Microscopy Society of America | es_ES |
dc.rights | Creative Commons Attribution-NonCommercial-NoDerivs 3.0 License | |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/3.0/ | |
dc.subject | Dentin | en_EN |
dc.subject | Zinc | en_EN |
dc.subject | Mineral | en_EN |
dc.subject | XRD | en_EN |
dc.subject | AFM | en_EN |
dc.title | Zinc-Containing Restorations Create Amorphous Biogenic Apatite at the Carious Dentin Interface: A X-Ray Diffraction (XRD) Crystal Lattice Analysis | en_EN |
dc.type | journal article | en_EN |
dc.rights.accessRights | open access | en_EN |
dc.identifier.doi | 10.1017/S1431927616011697 |