In vitro degradation of resin–dentin bonds analyzed by microtensile bond test, scanning and transmission electron microscopy

Hashimoto, Masanori; Ohno, Hiroki; Sano, Hidehiko; Kaga, Masayuki; Oguchi, Haruhisa

doi:10.1016/s0142-9612(03)00262-x

Cited by 346 publications

(334 citation statements)

References 39 publications

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“…The ideal hybrid layer would be characterized as a threedimensional collagen-resin biopolymer that provides both a continuous and stable link between the bulk adhesive and dentin substrate (Misra et al, 2004). A volume of demineralized/unprotected collagen remains at the bottom of the hybrid layer (BHL), susceptible of degradation, attributed to the action of host-derived matrix metalloproteinases (MMPs) (Hashimoto et al, 2003;Hebling et al, 2005;Pashley et al, 2004). This jeopardizes the longevity of bonded restorations, compromising the bonding efficacy over time (Breschi et al, 2010;Carrilho et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

Ions-modified nanoparticles affect functional remineralization and energy dissipation through the resin-dentin interface

Toledano

Osorio

et al. 2017

Journal of the Mechanical Behavior of Biomedical Materials

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The aim of this study was to evaluate changes in the mechanical and chemical behavior, and bonding ability at dentin interfaces infiltrated with polymeric nanoparticles (NPs) prior to resin application. Dentin surfaces were treated with 37% phosphoric acid followed by application of an ethanol suspension of NPs, Zn-NPs or Ca-NPs followed by the application of an adhesive, Single Bond (SB). Bonded interfaces were stored for 24 h, submitted to microtensile bond strength test, and evaluated by scanning electron microscopy. After 24 h and 21 d of storage, the whole resin-dentin interface adhesive was evaluated using a Nano-DMA. Complex modulus, storage modulus and tan delta (δ) were assessed. AFM imaging and Raman analysis were performed. Bond strength was not affected by NPs infiltration. After 21 d of storage, tan δ generally decreased at Zn-NPs/resin-dentin interface, and augmented when Ca-NPs or non-doped NPs were used. When both Zn-NPs and Ca-NPs were employed, the storage modulus and complex modulus decreased, though both moduli increased at the adhesive and at peritubular dentin after Zn-NPs infiltration. The phosphate and the carbonate peaks, and carbonate substitution, augmented more at interfaces promoted with Ca-NPs than with Zn-NPs after 21 d of storage, but crystallinity did not differ at created interfaces with both ions-doped NPs. Crosslinking of collagen and the secondary structure of collagen improved with Zn-NPs resin-dentin infiltration. Ca-NPs-resin dentin infiltration produced a favorable dissipation of energy with minimal stress concentration trough the crystalline remineralized resin-dentin interface, causing minor damage at this structure.

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Section: Introductionmentioning

confidence: 99%

Ions-modified nanoparticles affect functional remineralization and energy dissipation through the resin-dentin interface

Toledano

Osorio

et al. 2017

Journal of the Mechanical Behavior of Biomedical Materials

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“…Marginal micro-infiltration leads to problems such as the early loss of the restoration due to recurring caries, postoperative sensitivity or pulpal damage [1,2,3].…”

Section: Introductionmentioning

confidence: 99%

Universal Adhesive Systems in Class II Amalgam Restorations

Nascimento

Lima

Souza

et al. 2016

Rev. Odonto Ciênc. (Online)

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Objective: To assess the effectiveness of adhesive system in reducing microleakage in class II amalgam restorations. Methods: The teeth were divided randomly into 3 equal groups: Group I was the control experiment (Copal Vanish); Group II: single Bond Universal 3M-ESPE (with and without acid -37%); and Group III: All Bond Universal -BISCO (with and without acid -37%), after the amalgam was condensed. The root apices were then sealed with acrylic resin and stored for 24 hours in 100% humidity. After storage, the specimens were subjected to 500 cycles of thermocycling (5°C and 55°C). The teeth were isolated with cosmetic nail polish and were immersed in 0.5 basic fuchsin dye for 24 hours. The teeth then were sectioned with a diamond disc and observed under a stereomicroscope. Microleakage was assessed using a 0-3 scale of dye penetration. The data was analyzed using the Kruskal-Wallis test (p<0.05). Results: The microleakage scores revealed less leakage in the experimental groups than in the control group. The microleakage for the adhesives without acid conditioning was reduced, although no statistical significance was recorded (p<0.05). Conclusion: The immediate adhesive material acted effectively as a barrier for microleakage when it was applied without acid.Key words: Adhesives; Universal adhesive; Amalgams; Microleakage; Class II Sistema adesivo universal em restaurações de amálgama classe II RESUMO Objetivo: Avaliar a eficácia do sistema adesivo na redução da microinfiltração em restaurações de amálgama classe II. Metodologia: Os dentes foram divididos aleatoriamente em três grupos iguais: Grupo I foi o controle (Copal Vanish); Grupo II: Single Bond Universal 3M ESPE -(com e sem ácido -37%); e Grupo III: All bond Universal -BISCO (com e sem ácido -37%) com posterior condessação do amálgama. Os ápices foram então seladas com resina acrílica e armazenado durante 24 horas em 100% de humidade. Após a armazenagem, as amostras foram submetidas a 500 ciclos de termociclagem (5°C e 55°C). Os dentes foram isolados com esmalte para unha e foram imersos em 0,5 de fucsina básica por 24 horas. Em seguida os dentes foram seccionados com disco de diamante e observados sob microscópio estereoscópico. A microinfiltração foi avaliada usando uma escala de penetração do corante de 0-3. Os dados foram analisados utilizando o teste de Kruskal-Wallis (p<0,05). Resultados: Os escores revelaram menor infiltração nos grupos experimentais do que no grupo de controle. A infiltração para os adesivos sem condicionamento ácido foi reduzida, embora sem significância estatística (p<0,05). Conclusão: O material adesivo imediato atuou efetivamente como uma barreira para microinfiltração, quando foi aplicada sem condicionamento ácido.

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“…Besides the esthetic advantages related with its light transmission characteristics and similar color to teeth structures, the fiber-glass posts may be adhesively cemented and have a modulus of elasticity close to that of dentin, which minimizes the possibility of fracture of the remaining root [1]. However, the adhesive bonding of such posts to root dentin remains a frequently observed problem, due to hydrolytic degradation of the hybrid layer, which can result to the long-term reduction in bond strength [2][3][4].…”

Section: Introductionmentioning

confidence: 99%

Long-term effect of ethanol on the bond strength of fiber-glass posts to root dentin

Bordin

Cavalcanti

Farina

et al. 2015

Rev. Odonto Ciênc. (Online)

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Objective: To evaluate the long-term effect of ethanol (EtOH) application on the bond strength of adhesive systems used in post luting to root dentin. Methods: Bovine roots (n=40) had their root channel prepared for post luting and were etched with 37% phosphoric acid (15 s). Specimens were distributed according to adhesive system and EtOH application. Control groups received only the application of adhesives Adper ScothBond Multi-Purpose Plus (ASb), ou Adper Single Bond (SB). Experimental groups received previous EtOH application for 1 minute (EtOH+ASb and EtOH+SB groups). After fiber-glass post luting, specimens were stored for 24 h, or 12 months, and later subjected to push-out test (n=5). Data were analyzed by three-way analysis of variance and Tukey test (α<0.05). Results: The EtOH application did not influence the bond strength values in immediate evaluation (24 h), regardless of the adhesive system used (p>0.05). After 12 months, it was observed significant statistically reduction of adhesive resistance (p<0.05); however the EtOH+SB group did not presented statistical difference between the evaluated storage periods (p>0.05). Conclusion: EtOH pre-treatment contributes to maintain the long-term bond strength, when water and ethanol-based adhesive system is used.Keywords: Cementation; intracanal retention; root posts; ethanol Efeito em longo prazo da aplicação de etanol na resistência adesiva de pinos de fibra de vidro cimentados à dentina radicular Resumo Objetivo: Avaliar o efeito em longo prazo da aplicação de etanol (EtOH) na resistência adesiva de sistemas adesivos utilizados na cimentação de pinos à dentina radicular. Métodos: Raízes bovinas (n=40) tiveram o canal radicular preparado para receber pino, sendo realizado o condicionamento com ácido fosfórico 37% (15 s). Os espécimes foram distribuídos de acordo o sistema adesivo e aplicação de EtOH. Grupos controles receberam apenas aplicação dos adesivos Adper ScothBond Multi-Purpose Plus (ASb), ou Adper Single Bond (SB). Grupos experimentais receberam aplicação prévia de EtOH durante 1 minuto (EtOH+ASb e EtOH+SB). Após a cimentação, os espécimes, foram armazenados por 24 h, ou 12 meses, sendo submetidos ao teste push out (n=5). Os dados foram avaliados estatisticamente por análise de variância a 3 critérios e teste Tukey (α<0,05). Resultados: O tratamento com EtOH não influenciou os valores de resistência de união na avaliação imediata (24 h), independente do sistema adesivo empregado (p>0,05). Após 12 meses, observou-se redução estatisticamente significante da resistência adesiva (p<0,05), entretanto o grupo EtOH+SB não mostrou diferença estatística entre os tempos avaliados (p>0,05). Conclusão: O pré-tratamento com EtOH contribui para manutenção da resistência de união em longo prazo, quando utilizado sistema adesivo a base de água e etanol.

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In vitro degradation of resin–dentin bonds analyzed by microtensile bond test, scanning and transmission electron microscopy

Cited by 346 publications

References 39 publications

Ions-modified nanoparticles affect functional remineralization and energy dissipation through the resin-dentin interface

Ions-modified nanoparticles affect functional remineralization and energy dissipation through the resin-dentin interface

Universal Adhesive Systems in Class II Amalgam Restorations

Long-term effect of ethanol on the bond strength of fiber-glass posts to root dentin

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