Masticatory function induced changes, at subnanostructural level, in proteins and mineral at the resin–dentine interface

Toledano, Manuel; Aguilera, Fátima S.; Cabello, Inmaculada; Osorio, Raquel

doi:10.1016/j.jmbbm.2014.07.025

Cited by 5 publications

(10 citation statements)

References 44 publications

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“…2014a, 2014b; 2015), which suggest that cyclic and sustained loads promote remineralization of dentin in previously acid treated regions, i.e. at the hybrid layer of resin-dentin bonded interfaces.…”

Section: Discussionmentioning

confidence: 98%

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Synergistic degradation of dentin by cyclic stress and buffer agitation

Orrego

Romberg

Arola

2015

Journal of the Mechanical Behavior of Biomedical Materials

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Secondary caries and non-carious lesions develop in regions of stress concentrations and oral fluid movement. The objective of this study was to evaluate the influence of cyclic stress and fluid movement on material loss and subsurface degradation of dentin within an acidic environment. Rectangular specimens of radicular dentin were prepared from caries-free unrestored 3rd molars. Two groups were subjected to cyclic cantilever loading within a lactic acid solution (pH=5) to achieve compressive stresses on the inner (pulpal) or outer sides of the specimens. Two additional groups were evaluated in the same solution, one subjected to movement only (no stress) and the second held stagnant (control: no stress or movement). Exterior material loss profiles and subsurface degradation were quantified on the two sides of the specimens. Results showed that under cyclic stress material loss was significantly greater (p≤0.0005) on the pulpal side than on the outer side and significantly greater (p≤0.05) under compression than tension. However, movement only caused significantly greater material loss (p≤0.0005) than cyclic stress. Subsurface degradation was greatest at the location of highest stress, but was not influenced by stress state or movement.

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Section: Discussionmentioning

confidence: 98%

“…Recent studies by Toledano et al (2014a, 2014b; 2015) report that remineralization may be acheived in demineralized regions of the hybrid layer by a period of cyclic stress. Thus, it is important to consider the contributions of cyclic stress and environment on mineralization changes in greater detail.…”

Section: Introductionmentioning

confidence: 99%

Synergistic degradation of dentin by cyclic stress and buffer agitation

Orrego

Romberg

Arola

2015

Journal of the Mechanical Behavior of Biomedical Materials

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“…It could be speculated that a relationship between those findings and some process of a partial dentin remineralization, where mineral crystallites remaining within the collagen after partial demineralization might act as seed sites for apatite growth (Bertassoni et al, 2010). These hypotheses have been recently tested with some etch-and-rinse and two-step self-etching adhesives, using different research techniques such as RAMAN, scanning electron microscopy, or nanohardness measurements at the bonded interface (Toledano et al, 2014 a , 2014 b , 2014 c , 2014 d , 2014 e ).…”

Section: Introductionmentioning

confidence: 99%

Improved Sealing and Remineralization at the Resin-Dentin Interface After Phosphoric Acid Etching and Load Cycling

et al. 2015

Self Cite

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The purpose of this study was to investigate micro-morphology of the resin-dentin inter-diffusion zone using two different single-bottle self-etching dentin adhesives with and without previous acid-etching, after in vitro mechanical loading stimuli. Extracted human third molars were sectioned to obtain dentin surfaces. Two different single-bottle self-etching dentin adhesives, Futurabond U and Experimental both from VOCO, were applied following the manufacturer's instructions or after 37% phosphoric acid application. Resin-dentin interfaces were analyzed with dye assisted confocal microscopy evaluation (CLSM), including the calcium-chelation technique, xylenol orange (CLSM-XO). CLSM revealed that resin-dentin interfaces of unloaded specimens were deficiently resin-hybridized, in general. These samples showed a Rhodamine B-labeled hybrid complex and adhesive layer completely affected by fluorescein penetration (nanoleakage) through the porous resin-dentin interface, but thicker after PA-etching. Load cycling promoted an improved sealing of the resin-dentin interface at dentin, a decrease of the hybrid complex porosity, and an increment of dentin mineralization. Load cycled specimens treated with the XO technique produced a clearly outlined fluorescence due to consistent Ca-mineral deposits within the bonding interface and inside the dentinal tubules, especially when the experimental adhesive was applied.

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“…Os espécimes seccionados foram polidos com uso de discos de lixa com granulação de #1200-4000. No intervalo das trocas entre cada lixa, os espécimes foram limpos por meio de banhos em cuba ultrassônica contendo água deionizada, por 5 minutos (Toledano et al, 2014). Para a avaliação da microdureza, a face oposta dos fragmentos referentes a cada grupo (esmalte hígido e lesão de mancha branca) foram polidos para a obtenção de amostras planas, requisito indispensável para o uso do aparelho.…”

Section: Secção Das Lesões Artificiais E Polimento Dos Espécimesunclassified

“…Alguns estudos como o de Feagin et al (1969), Davidson et al (1974) A espectroscopia Raman foi utilizada para avaliação do conteúdo inorgânico e orgânico do esmalte hígido e do esmalte cariado. As bandas obtidas neste estudo estão de acordo com as bandas apresentadas em estudos anteriores (Mohanty et al, 2013;Toledano et al, 2014;Sadyrin et al,2020). O maior pico encontrado no espectro está relacionado ao modo de estiramento simétrico do fosfato (v1) em 960,3cm -1 , sendo este o pico de maior intensidade em estudos que avaliam os tecidos mineralizados, como o esmalte dental, dentina e tecido ósseo (Kinoshita et al, 2008;Almahdy et al, 2012;Mohanty et al, 2013;Timchenko et al, 2015;Akkus et al, 2016;Sadyrin et al, 2020).…”

Section: Parâmetro Hígido Cariadounclassified

Caracterização de lesões de mancha branca naturais

Araújo¹

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Aos meus paisAlexssandra e Ernani por todo esforço, incentivo, apoio e amor. Espero um dia poder retribuir tudo que vocês fizeram e fazem por mim. Amo vocês! À minha avó Irene, e às minhas tias-avós Maria (in memoriam) Porfiria e Raimunda, por todo seu cuidado, amor, carinho e dedicação. À minha família, em especial aos meus irmãos Erick e Hayram, por toda a torcida e apoio de sempre. Às minhas amigas/irmãs Fernanda e Júlia que dividiram todos esses anos ao meu lado, desde a graduação. Muito obrigada por tudo! Ao meu namorado, Christian, por todo o apoio, amor, carinho e incentivo que tem me dado durante esse último ano. I love you! AGRADECIMENTOS

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Masticatory function induced changes, at subnanostructural level, in proteins and mineral at the resin–dentine interface

Cited by 5 publications

References 44 publications

Synergistic degradation of dentin by cyclic stress and buffer agitation

Synergistic degradation of dentin by cyclic stress and buffer agitation

Improved Sealing and Remineralization at the Resin-Dentin Interface After Phosphoric Acid Etching and Load Cycling

Caracterização de lesões de mancha branca naturais

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