@misc{10481/61955,
year = {2019},
url = {http://hdl.handle.net/10481/61955},
abstract = {The aim of this research was to assess and quantify the mechanical and chemical behavior of sound and caries-affected dentin (CAD), after the placement of Zn-free vs containing amalgam restorations, and thermocycling. Peritubular and intertubular dentin 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 (E*) and storage modulus (E'); b) Raman spectroscopy, to describe the principal component analysis (PCA) and the hierarchical cluster analysis (HCA). Assessments were performed before restoration placement, after restoration removal, and after 3 months of storage with thermocycling (100,000cy/5 ºC and 55 ºC).  When CAD was treated with Zn-containing restorations, thermocycling augmented the differences between E* and E', at both peritubular and intertubular dentin. The complex and storage modulus were minimum at intratubular dentin of CAD restored with Zn-containing restorations. The relative presence of minerals, crystallinity referred to phosphate and crosslinking of collagen increased at both peritubular and intertubular dentin of CAD restored with Zn-containing restorations. Nature and secondary structure of collagen augmented, in general, in those groups, except at ratio amide III/CH2 and AGEs-pentosidine. Hierarchical cluster analysis revealed different levels of dentin maturation, after thermocycling.},
organization = {This work was supported by the Ministry of Economy and Competitiveness (MINECO) and European Regional Development Fund (FEDER) [grant number MAT2014-52036-P]; Ministry of Economy and Competitiveness (MINECO) [grant number FIS2013-41821-R].},
publisher = {ELSEVIER SCIENCE BV},
keywords = {Nano-DMA},
keywords = {Raman},
keywords = {dentin},
keywords = {amalgam},
keywords = {zinc},
keywords = {mineral},
title = {Stored potential energy increases and elastic properties alterations are produced after restoring dentin with Zn-containing amalgams},
doi = {https://doi.org/10.1016/j.jmbbm.2018.12.002},
author = {Toledano Pérez, Manuel and Osorio Ruiz, María Estrella and Sánchez Aguilera, Fátima and Toledano Osorio, Manuel and López López, Modesto Torcuato and Osorio Ruiz, Raquel},
}