Effect of an hydrophobic layer on a universal adhesive

Serafim, Mayara Farah Dallin; Leal, Adriana Mara Araújo; Bauer, José; Gomes, Isabella Azevedo; Carneiro, Karina Gama Kato

doi:10.1590/1981-863720180004000073500

Cited by 2 publications

(1 citation statement)

References 14 publications

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“…Several studies indicated a beneficial effect on dentin bond strength with the application of an extra hydrophobic adhesive layer over Scotchbond TM Universal or other adhesive systems. 17,19,20,[30][31][32] A recent paper highlighted that the overall effect of using an extra bonding layer on the immediate and aged dentin bonding strength of the more recently introduced universal adhesives was dependent on the specific adhesive and its application mode. 33 The application of an extra hydrophobic resin layer has been suggested to improve the adhesion of universal adhesives to dentin since it adds unsolvated hydrophobic monomers to the adhesive interface, which decreases the relative concentration of retained solvents and unreacted monomers in the adhesive layer.…”

Section: Discussionmentioning

confidence: 99%

Bonding performance of a universal adhesive: effect of hydrophobic resin coating and long-term water storage

Vinagre¹,

Ralho²,

Ramos³

et al. 2019

j.rpemd

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To evaluate the immediate and water-aged microtensile bond strength of a universal adhesive to dentin, using the self-etch approach with and without an additional hydrophobic resin layer. Methods: Flat dentin surfaces were prepared from twelve non-carious human molars and were randomly divided into two groups. The universal adhesive system Scotchbond™ Universal was used in self-etch mode (SBU) with and without the application of an extra hydrophobic resin layer of Adper™ Scotchbond™ MultiPurpose Plus (SBU+HL). After composite buildups, samples were stored in water (37ºC/7 days) and then sectioned into microspecimens (1.00±0.2 mm 2). Half of the microspecimens were immediately subjected to microtensile bond strength testing (0.5 mm/min) while the other half was stored in water, according to the ISO/TS 11405:2015, for 4 years before testing. Data were analyzed with Kruskal Wallis and all-pairwise comparisons with Bonferroni corrections (p<0.05). Results: The following microtensile bond strengths were registered (mean in MPa±SD): immediate SBU, 52.5±13.56; 4-year SBU, 26.0±6.50; immediate SBU+HL, 59.3±12.39; 4-year SBU+HL, 32.5±5.72. No statistically significant differences were detected between adhesive strategies either immediately or in the aged period (p>0.05). A significant decrease in bond strength was verified between the immediate and the 4-year evaluation for both groups (p<0.05). Conclusions: Water storage induced an approximately 50% reduction in dentin bond strength, regardless of the adhesive strategy employed. The incorporation of an extra hydrophobic layer over the universal adhesive did not improve dentin bond strength significantly either immediately or after long-term water storage. (Rev Port Estomatol Med Dent Cir Maxilofac.

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Section: Discussionmentioning

confidence: 99%

Bonding performance of a universal adhesive: effect of hydrophobic resin coating and long-term water storage

Vinagre¹,

Ralho²,

Ramos³

et al. 2019

j.rpemd

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Effect of Different Application Modalities on the Bonding Performance of Adhesive Systems to Dentin: A Systematic Review and Meta-Analysis

Hardan

Bourgi

Cuevas‐Suárez

et al. 2023

Cells

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Diverse types of dental adhesives exhibit different cytotoxic outcomes on cells in vitro. Currently, no standard adhesive application technique has so far been decisive for clinicians for better durability of resin–dentin bonds of adhesive systems. The purpose of this study was to systematically review the literature to evaluate the bonding performance of adhesive systems to dentin by using different application modalities. The systematic research strategy was conducted by two reviewers among multiple databases: PubMed, Scopus, Web of Science, Embase, and Scielo. In vitro studies reporting the effects of additional steps for the application of adhesive systems on the bond strength to dentin were selected. Meta-analysis was performed using Review Manager Software version 5.3.5 using the random effects model. The methodological quality of each in vitro study was assessed according to the parameters of a previous systematic review. The electronic research through different databases generated a total of 8318 references. After the examination of titles and abstracts, a total of 106 potentially relevant studies accessed the full-text evaluation phase. After full-text examination, 78 publications were included for the qualitative analysis, and 68 studies were included in the meta-analysis. Regarding the etch-and-rinse adhesive systems, the application modalities that improved the overall bond strength were the application of a hydrophobic resin layer (p = 0.005), an extended application time (p < 0.001), an application assisted by an electric current (p < 0.001), a double-layer application (p = 0.05), the agitation technique (p = 0.02), and the active application of the adhesive (p < 0.001). For self-etch adhesive systems, the techniques that improved the overall bond strength were the application of a hydrophobic resin layer (p < 0.001), an extended application time (p = 0.001), an application assisted by an electric current (p < 0.001), a double-layer application (p < 0.001), the agitation technique (p = 0.01), and the active application of the adhesive (p < 0.001). The in vitro evidence suggests that the application of adhesive systems using alternative techniques or additional strategies may be beneficial for improving their bond strength to dentin. The application modalities that favored the overall bond strength to dentin were an extended application time, a double-layer application, an application assisted by an electric current, the active application of the adhesive, and the application of a hydrophobic resin layer. Worth mentioning is that some techniques are intended to increase the degree of the conversion of the materials, and therefore, improvements in the biocompatibility of the materials can be expected.

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Effect of an hydrophobic layer on a universal adhesive

Cited by 2 publications

References 14 publications

Bonding performance of a universal adhesive: effect of hydrophobic resin coating and long-term water storage

Bonding performance of a universal adhesive: effect of hydrophobic resin coating and long-term water storage

Effect of Different Application Modalities on the Bonding Performance of Adhesive Systems to Dentin: A Systematic Review and Meta-Analysis

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