A challenge to the conventional wisdom that simultaneous etching and resin infiltration always occurs in self-etch adhesives

Carvalho, Ricardo Marins de; Chersoni, Stefano; Frankenberger, Roland; Pashley, David H.; Prati, Carlo; Tay, Franklin R.

doi:10.1016/j.biomaterials.2004.04.003

Cited by 250 publications

(161 citation statements)

References 15 publications

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“…Hence the hardness and elastic modulus of this zone could be low. For the sound primary teeth, continuous etching of the intact dentin beneath the hybrid layer by incompletely polymerized acidic resin monomers could also have produced a zone of partially demineralized dentin with sparse resin infiltration 25,26 . This could have accounted for the low hardness values obtained from the subsurface dentin 10 µm beneath the interface in the Hybrid Bond groups (Table 2), and the One-Up Bond F Plus and Clearfil Tri-S Bond groups in the previous studies 15,16 .…”

Section: Discussionmentioning

confidence: 99%

Hardness and Elasticity of Sound and Caries-affected Primary Dentin Bonded with One-step Self-etch Adhesive

Hosoya¹,

Tay²,

Miyazaki³

et al. 2007

Dent. Mater. J.

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Biomechanical properties of bonded dentin are important for resin restorations. We hypothesized that there are no differences in the hardness and elasticity of sound and caries-affected primary dentin bonded with a one-step self-etch adhesive. Resin-dentin interfaces in sound and caries-affected primary dentin were measured with a nano-indentation tester and observed with SEM and TEM. Interfacial dentin hardness was similar for sound and caries-affected dentin, but significantly lower than the underlying intact dentin. As for the Young's modulus of interfacial dentin, both substrates exhibited significantly lower values than the subsurface dentin. Further, the Young's modulus of interfacial dentin was significantly lower in caries-affected dentin. TEM revealed extensive interfacial nanoleakage in bonded sound dentin, while it was minimal in bonded caries-affected dentin. However, in the latter, silver deposits were identified within the porous substrate. Shorter application time and/or improvement of the adhesive components may be required to obtain stable adhesion in primary dentin.

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Section: Discussionmentioning

confidence: 99%

Hardness and Elasticity of Sound and Caries-affected Primary Dentin Bonded with One-step Self-etch Adhesive

Hosoya¹,

Tay²,

Miyazaki³

et al. 2007

Dent. Mater. J.

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“…The use of self-etching adhesives favors the demineralization and infiltration of the dentin surface at the same depth, theoretically impeding adhesive failure. However, Carvalho et al [29] reported cases of nano-infiltration along the interface, suggesting that acidic monomers were gradually buffered by the mineral content of the substrate and partially conditioned the dentin. Consequently, areas or partially demineralized, although not infiltrated, dentin was produced below the hybrid layer.…”

Section: Discussionmentioning

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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“…Conditioning and resin monomer infiltration in enamel and dentine occur simultaneously; thus, reducing the potential for degradation over time[8] and eliminating the critical post-etch rinsing and drying steps of total etching adhesive systems. [10] Although the literature on this matter is controversial,[11] the self-etch adhesive systems reduce the technique sensitivity during handling and application. [8]…”

Section: Introductionmentioning

confidence: 99%

Effect of operator variability on microleakage with different adhesive systems

et al. 2013

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Objective:The objective of this study was to evaluate the effect of operator variability on microleakage with different adhesive systems.Materials and Methods:A total of 180 standardized Class V cavities were prepared on facial and lingual of 90 extracted human premolar teeth and randomly assigned to five groups according to the adhesive systems used (n = 36): Prime and Bond NT (PB), Single Bond (SB), Futura Bond NR, Xeno III (XE) and Adper Prompt-L-Pop (LP). The adhesive groups were then further subdivided into three operator groups according to level of clinical experience (n = 12): An undergraduate student, a research assistant and a faculty member. All cavities were restored with same composite resin. The restored teeth were thermocycled (500 cycles, 5-55°C) then immersed in 0.5% basic fuchsin and measured for leakage under a stereomicroscope. Statistical analyses were performed with the Kruskal-Wallis and Mann-Whitney U tests.Results:Significant inter-operator variation was found in the enamel margins in the XE group with significantly higher microleakage when used by the undergraduate student (P < 0.05). Although no significant differences in microleakage were found between adhesive systems for the research assistant and faculty member (P > 0.05), significant differences were observed between PB and LP, PB and XE, SB and LP and SB and XE in the enamel margins for the undergraduate student (P < 0.05).Conclusion:Microleakage of adhesive systems is more dependent on interactions between the operator and adhesive material than on the choice of adhesive material.

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A challenge to the conventional wisdom that simultaneous etching and resin infiltration always occurs in self-etch adhesives

Cited by 250 publications

References 15 publications

Hardness and Elasticity of Sound and Caries-affected Primary Dentin Bonded with One-step Self-etch Adhesive

Hardness and Elasticity of Sound and Caries-affected Primary Dentin Bonded with One-step Self-etch Adhesive

Universal Adhesive Systems in Class II Amalgam Restorations

Effect of operator variability on microleakage with different adhesive systems

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