Mostrar el registro sencillo del ítem

dc.contributor.authorToledano Pérez, Manuel 
dc.contributor.authorCabello Malagón, Inmaculada
dc.contributor.authorSánchez Aguilera, Fátima 
dc.contributor.authorLópez López, Modesto Torcuato 
dc.contributor.authorToledano Osorio, Manuel 
dc.contributor.authorOsorio Ruiz, Raquel 
dc.date.accessioned2015-11-25T07:06:49Z
dc.date.available2015-11-25T07:06:49Z
dc.date.issued2015-09
dc.identifier.citationToledano Pérez, M.; et al. Nanoscopic dynamic mechanical analysis of resin-infiltrated dentine, under in vitro chewing and bruxism events. Journal of the Mechanical Behavior of Biomedical Materials, 54:33-47 (2015). [http://hdl.handle.net/10481/38988]es_ES
dc.identifier.issn1571-6161
dc.identifier.urihttp://hdl.handle.net/10481/38988
dc.description.abstractThe aim of this study was to evaluate the induced changes in mechanical behavior and bonding capability of resin–infiltrated dentine interfaces, after application of mechanical stimuli. Dentine surfaces were subjected to partial demineralization through 37% phosphoric acid etching followed by the application of an etch-and-rinse dentine adhesive, Single Bond (3M/ESPE). Bonded interfaces were stored in simulated body fluid during 24 h, and then tested or submitted to the mechanical loading challenge. Different loading waveforms were applied: No cycling (I), 24 h cycled in sine (II) or square (III) waves, sustained loading held for 24 h (IV) or sustained loading held for 72 h (V). Microtensile bond strength (MTBS) was assessed for the different groups. Debonded dentine surfaces were studied by field emission scanning electron microscopy (FESEM). At the resin–dentine interface, both the hybrid layer (HL) and the bottom of the hybrid layer (BHL), and both peritubular and intertubular were evaluated using a nanoindenter in scanning mode. The load and displacement responses were used to perform the nano-Dynamic Mechanical analysis and to estimate the complex and storage modulus. Dye assisted Confocal Microscopy Evaluation was used to assess sealing ability. Load cycling increased the percentage of adhesive failures in all groups. Specimens load cycled in held 24 h attained the highest complex and storage moduli at HL and BHL. The storage modulus was maximum in specimens load cycled in held 24 h at peritubular dentine, and the lowest values were attained at intertubular dentine. The storage modulus increased in all mechanical tests, at peritubular dentine. An absence of micropermeability and nanoleakage after loading in sine and square waveforms were encountered. Porosity of the resin–dentine interface was observed when specimens were load cycled in held 72 h. Areas of combined sealing and permeability were discovered at the interface of specimens load cycled in held 24 h. Crack-bridging images appeared in samples load cycled with sine waveform, after FESEM examination.es_ES
dc.description.sponsorshipThis work was supported by grants MINECO/FEDER MAT2014-52036-P and FIS2013-41821-R.es_ES
dc.language.isoenges_ES
dc.publisherElsevieres_ES
dc.rightsCreative Commons Attribution-NonCommercial-NoDerivs 3.0 License
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/
dc.subjectLoad cyclinges_ES
dc.subjectSealinges_ES
dc.subjectDMAes_ES
dc.subjectDentinees_ES
dc.subjectAdhesives es_ES
dc.titleNanoscopic dynamic mechanical analysis of resin-infiltrated dentine, under in vitro chewing and bruxism eventses_ES
dc.typeinfo:eu-repo/semantics/preprintes_ES
dc.rights.accessRightsinfo:eu-repo/semantics/openAccesses_ES
dc.identifier.doi10.1016/j.jmbbm.2015.09.003


Ficheros en el ítem

[PDF]

Este ítem aparece en la(s) siguiente(s) colección(ones)

Mostrar el registro sencillo del ítem

Creative Commons Attribution-NonCommercial-NoDerivs 3.0 License
Excepto si se señala otra cosa, la licencia del ítem se describe como Creative Commons Attribution-NonCommercial-NoDerivs 3.0 License