Evaporating solvents with a warm air-stream: Effects on adhesive layer properties and resin–dentin bond strengths

Klein-Júnior, Celso Afonso; Zander-Grande, Christiana; Amaral, Rodrigo de Souza; Stanislawczuk, Rodrigo; García, E. Navarro; Baumhardt‐Neto, Ricardo; Meier, Márcia Margarete; Loguércio, Alessandro Dourado; Reis, Alessandra

doi:10.1016/j.jdent.2008.04.014

Cited by 87 publications

(88 citation statements)

References 26 publications

(33 reference statements)

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“…One of the methods currently used to evaporate solvents from adhesives is air-drying prior to light irradiation [22][23][24] . The complete evaporation of solvents inside an adhesive is diffi cult to achieve; however, warm air-drying appears to be particularly successful in achieving optimum bond strength, as heating increases the kinetic energy of the molecules in the solvents 12,13) . The data in the present study suggested that a temperature increase during air-drying led to signifi cant increases in bond strength for both AE and CT.…”

Section: Discussionmentioning

confidence: 99%

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Effect of warm air-drying on dentin bond strength of single-step self-etch adhesives

et al. 2012

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The effect of warm air-drying on the dentin bond strengths of the single-step self-etch adhesives was determined. The adhesives were applied to bovine dentin followed by drying in a stream of warm air for 5, 10, and 15 s at 37°C. Resin composites were condensed into a mold and polymerized. Specimens were stored in distilled water at 37°C for 24 h, then shear tested. The surface free-energies were determined by measuring the contact angles of three test liquids placed on the cured adhesives. The dentin bond strengths varied according to the air-drying time. The value of the acid component increased slightly when drying was performed with a stream of warm air, whereas that of the base component decreased signifi cantly. These data suggested that warm air-drying was essential to obtain adequate bond strengths, although increasing the drying time did not signifi cantly infl uence the bond strength.

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Section: Discussionmentioning

confidence: 99%

“…A clinical approach to obtain stable dentin bonding is the use of a warm air stream to evaporate solvents from etch-and-rinse adhesive systems. Relatively higher bond strengths were obtained with warm air-drying of the adhesives 12,13) , but the optimum time required to achieve stable bonding was not established.…”

Section: Introductionmentioning

confidence: 99%

Effect of warm air-drying on dentin bond strength of single-step self-etch adhesives

et al. 2012

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“…Ideally, all solvents should be completely removed from the dentin surface prior to polymerization. One clinical approach to obtaining stable dentin bonding and relatively higher bond strengths is to employ warm air-drying of the adhesives 4,5) . However, complete evaporation using with dental air syringe in clinical situations is diffi cult to achieve and is dependent on the properties of the solvents 6) .…”

Section: Introductionmentioning

confidence: 99%

Effect of air-drying dentin surfaces on dentin bond strength of a solvent-free one-step adhesive

et al. 2012

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The purpose was to evaluate the effect of air-drying dentin surfaces on the microtensile bond strength (μTBS) of a solvent-free onestep adhesive (Bond 1 SF). Twelve human molars were ground with 600-grit SiC paper. Before applying bonding agent, the dentin surface was rinsed with distilled water and blot-dried with tissue paper, followed by air-drying for 0, 3, 30, and 60 s using with a dental air syringe. After applying and curing Bond 1 SF, resin composite was incrementally built up. Specimens were then stored in distilled water for 24 h and then μTBSs were measured at a cross-head speed of 1 mm/min. Higher μTBS were observed when the dentin surface was air-dried for 3 s (33.2±6.8MPa)>0 s (26.7±4.5MPa)>30 s (22.6±5.5MPa)=60 s (20.4±5.0MPa). The results suggested that prolonged air-drying of the dentin surface removed water and decreased the bond strengths of Bond 1 SF.

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“…1 Conversely, when using the water-wet bonding technique, the water content on the acidetched dentin surface makes the hybridization of dentin with hydrophobic resins impractical, forcing the manufacturers to include hydrophilic monomers in dental adhesive formulations. 2 Among many critical issues, excess residual water within demineralized dentin has been shown to interfere with the conversion of resin monomers into polymers [3][4] and cause phase separation between the hydrophobic and hydrophilic components of dental adhesives, [5][6] which results in the formation of porous hybrid layers. [7][8] Inopportunely, during and after adhesive polymerization, an outward fluid flow of dentinal tubules can be consistently observed.…”

Section: Introductionmentioning

confidence: 99%

Effect of Oxalate Desensitizer on the Durability of Resin-Bonded Interfaces

Silva¹,

Malcarne-Zanon²,

Carvalho³

et al. 2010

Operative Dentistry

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Clinical RelevanceDespite oxalate desensitizer showing a decrease in the rate of resin-dentin bond degradation over time, it compromised the baseline bond strength of etch-and-rinse adhesives to dentin. Further investigation regarding reliability of the combination of oxalate desensitizers and etch-and-rinse adhesives is required prior to implementation of this approach in the clinical routine. SUMMARYPotassium oxalate desensitizers were previously shown to effectively reduce the immediate permeability of resin-bonded dentin. The current study evaluated whether the effect of the combined application of oxalate with etch-and-rinse adhesives interferes with the durability of resindentin bonds when using etch-and-rinse adhesives. The bond strength of resin-bonded dentin specimens composed of two-step or three-step etch-and-rinse adhesives (Single Bond, One-Step and Scotchbond Multi-Purpose, respectively) BISCO, Inc). The treatment of dentin with potassium oxalate was shown to negatively affect the baseline bond strength of resin-bonded dentin specimens, regardless of the adhesive used (p<0.05). After storage, the bond strength of the resin-bonded interfaces was significantly reduced for all the tested groups (p<0.001). Nevertheless, the rate of decreasing bond strength was significantly lower for oxalatetreated specimens than for the controls (p<0.05).

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Evaporating solvents with a warm air-stream: Effects on adhesive layer properties and resin–dentin bond strengths

Cited by 87 publications

References 26 publications

Effect of warm air-drying on dentin bond strength of single-step self-etch adhesives

Effect of warm air-drying on dentin bond strength of single-step self-etch adhesives

Effect of air-drying dentin surfaces on dentin bond strength of a solvent-free one-step adhesive

Effect of Oxalate Desensitizer on the Durability of Resin-Bonded Interfaces

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