Effects of HEMA on water evaporation from water–HEMA mixtures

Pashley, Edna L.; Zhang, Yi; Lockwood, Petra E.; Rueggeberg, Frederick A.; Pashley, David H.

doi:10.1016/s0109-5641(98)00003-7

Cited by 222 publications

(182 citation statements)

References 6 publications

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“…Moreover, when HEMA is included, a progressive decrease in the partial pressure of water is produced. 42 As the partial pressure drops, it becomes more and more difficult for residual water to be removed from the demineralized dentin, and the hydrophobic Bis-GMA monomer resists diffusion into sites that contain residual water, producing an incom- plete adhesive diffusion through the demineralised dentin. 43 Previous studies on dentin adhesion described similar results when SBMP and Clearfil agents were compared.…”

Section: Discussionmentioning

confidence: 99%

Microleakage and interfacial morphology of self‐etching adhesives in class V resin composite restorations

et al. 2003

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The purpose of the study was to evaluate the marginal leakage of three adhesive systems in Class V resin composite restorations. Two adhesive systems containing acidic primers: Clearfil SE Bond (CSEB) and Etch & Prime 3.0 (E&P), were compared with a conventional water-based primer: Scotchbond Multipurpose Plus (SBMP). Class V cavities were made at the cementum-enamel junction of extracted human molars, which were then divided between three groups. One of the adhesive systems was applied to each group following manufacturers' instructions. Composite restorations were placed, light cured for 40 s, and polished. Specimens were then immersed in a solution of 2% basic fuchsin dye for 24 h. Longitudinal sections were obtained and studied with a stereomicroscope for assessment of the microleakage according to the degree of dye penetration (scale of 0 -3). Data were analyzed by Kruskal-Wallis one-way ANOVA, Mann-Whitney tests, and the Wilcoxon matched-pairs signed rank test. Two specimens for each group were analyzed by scanningelectron microscopy (SEM). Bonded interfaces of dentin were also examined by transmissionelectron microscopy (TEM). On enamel, there were no significant differences between the three groups. On dentin, CSEB showed the lowest dye penetration values among the three adhesive systems. SEM and TEM studies showed hybrid layer and resin tag formations in all groups.

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Section: Discussionmentioning

confidence: 99%

Microleakage and interfacial morphology of self‐etching adhesives in class V resin composite restorations

et al. 2003

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“…Consequently, the conjugation of the effects (a, b) determines the spatial anisotropy of the curing kinetics. It was already shown that the rate of water evaporation from water-HEMA mixtures decreases as the HEMA concentration rises [19] and that the presence of excess residual water may adversely affect the polymerization of the adhesives [20]. This observation does not rule out the presence of other kind of chemical interaction-inhibition, which, if present, would affect uniformly the shape of the profile.…”

Section: Article In Pressmentioning

confidence: 98%

Spatially resolved photopolymerization kinetics and oxygen inhibition in dental adhesives

et al. 2005

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“…Ethanol has a higher vapor pressure than water, enhancing its evaporation and creating wider interfibrilar spaces for impregnation of hydrophobic monomers to form a more stable hybrid layer. 213,214,215 Basically, ethanol dehydrates the demineralized collagen matrix and coaxes hydrophobic monomers into it. 216 This technique also prevents phase separation of hydrophobic resin monomers in the presence of water, 217,218,219 since the latter is completely replaced by ethanol prior to the application of the ethanolsoluble monomers.…”

Section: Ethanol -Wet Bondingmentioning

confidence: 99%

“…220,221 Additionally, the elimination of residual water seems to contribute to decrease or even eliminate hydrolytic enzymatic degradation of collagen fibrils, 212,222 thereby increasing bond durability and stability. 213 However, this technique is very sensitive, time consuming and requires the application of many steps to achieve the desired dehydration, which becomes inappropriate. More studies are necessary to improve this protocol for clinical use.…”

Section: Ethanol -Wet Bondingmentioning

confidence: 99%

Bonding efficiency and durability: current possibilities

et al. 2017

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Bonding plays a major role in dentistry nowadays. Dental adhesives are used in association with composites to solve many restorative issues. However, the wide variety of bonding agents currently available makes it difficult for clinicians to choose the best alternative in terms of material and technique, especially when different clinical situations are considered. Moreover, although bonding agents allow for a more conservative restorative approach, achieving a durable adhesive interface remains a matter of concern, and this mainly due to degradation of the bonding complex in the challenging oral environment. This review aims to present strategies that are being used or those still in development which may help to prevent degradation. It is fundamental that professionals are aware of these strategies to counteract degradation as much as possible. None of them are efficient to completely solve this problem, but they certainly represent reasonable alternatives to increase the lifetime of adhesive restorations.

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Effects of HEMA on water evaporation from water–HEMA mixtures

Cited by 222 publications

References 6 publications

Microleakage and interfacial morphology of self‐etching adhesives in class V resin composite restorations

Microleakage and interfacial morphology of self‐etching adhesives in class V resin composite restorations

Spatially resolved photopolymerization kinetics and oxygen inhibition in dental adhesives

Bonding efficiency and durability: current possibilities

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