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dc.contributor.authorToledano Osorio, Manuel
dc.contributor.authorSánchez Aguilera, Fátima 
dc.contributor.authorOsorio Ruiz, Raquel 
dc.contributor.authorMuñoz Soto, Esther
dc.contributor.authorPérez-Álvarez, M.C.
dc.contributor.authorLópez López, Modesto Torcuato 
dc.contributor.authorLynch, Christopher D.
dc.contributor.authorToledano Pérez, Manuel
dc.identifier.citationToledano-Osorio M., Aguilera F.S., Osorio R., Muñoz-Soto E., Pérez-Álvarez M.C., López-López M.T., Lynch C.D. Hydroxyapatite-based cements induce different apatite formation in radicular dentin (2020) Dental Materials, 36 (1), pp. 167-178.es_ES
dc.description.abstractObjectives. To investigate crystallinity and ultrastructure of the formed hydroxyapatite at radicular cervical and apical dentin after being treated with three different canal sealers. Methods. Cervical and apical root dentin surfaces were treated with two experimental hydroxyapatite-based sealers, containing sodium hydroxide (calcypatite) or zinc oxide (oxipatite) and an epoxy resin-based canal sealer (AH Plus); gutta-percha without sealer was included as control. Dentin surfaces were studied by X-ray diffraction and transmission electron microscopy through selected area diffraction and bright-field imaging after 24 h and 12 m of storage. Results. Root cervical dentin treated with calcypatite and oxipatite produced poor crystallinity of new minerals, wide amorphous phase and non-stoichiometry. Reflections at the 002 plane and the corresponding diffraction rings attained lower values in the Scherrer equation and the Scherrer-Wilson equation in samples treated with both HAp-based sealers than in specimens without sealer or with AH Plus. At root cervical dentin treated with calcypatite, shorter and wider crystallite size formations and lower crystals grain size were found, if compared to those encountered at oxipatite treated dentin. Oxipatite attained improved crystallographic atomic order and less structural variation in both distances and angles. Apical dentin treated with oxipatite attained preferred grain orientation with polycrystalline lattices. Significance. The immature crystallites formed in dentin treated with calcypatite and oxipatite will account for high hydroxyapatite solubility and remineralizing activity. New polycrystalline formations encountered in apical dentin treated with oxipatite may also produce high mechanical performance.es_ES
dc.description.sponsorshipThis work was supported by the Ministry of Economy and Competitiveness (MINECO) and European Regional Development Fund (FEDER) Project MAT2017-85999-P.es_ES
dc.rightsAtribución-NoComercial-SinDerivadas 3.0 España*
dc.titleHydroxyapatite-based cements induce different apatite formation in radicular dentines_ES

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Atribución-NoComercial-SinDerivadas 3.0 España
Except where otherwise noted, this item's license is described as Atribución-NoComercial-SinDerivadas 3.0 España