Effects of surface treatment on the free surface energy of dentin

Attal, Jean‐Pierre; Asmussen, Erik; Degrange, Michel

doi:10.1016/0109-5641(94)90071-x

Cited by 102 publications

(102 citation statements)

References 13 publications

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“…This finding is consistent with previous results, that the increased irregular, rough surface improved bond strength due to the increasing bonding surface area. 20,[23][24] The chemical composition of the dentin surface, which, together with surface roughness and capillary action, may be the decisive factor for dentin surface-free energy 25 and, consequently, diffusion of the self-adhesive luting cement into the dentin surface. 26 The increase in bond strength in the particle abrasion group could also be explained by the mode of failure.…”

Section: Discussionmentioning

confidence: 99%

The Effects of Tooth Preparation Cleansing Protocols on the Bond Strength of Self-adhesive Resin Luting Cement to Contaminated Dentin

Chaiyabutr¹,

Kois²

2008

Operative Dentistry

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SUMMARYThis in vitro study evaluated the bond strength of a self-adhesive luting cement after using four different techniques to remove surface contamination on dentin. Extracted human molars were flattened to expose the dentin surface and prepared for full crown preparation. Acrylic temporary crowns were fabricated and placed using temporary cement. The specimens were stored at room temperature with 100% relative humidity for seven days. Following removal of the temporary crowns, the specimens were randomly divided into four groups, and excess provisional cement was removed with 1) a hand instrument (excavator), 2) prophy with a mixture of flour pumice and water 3) aluminous oxide abrasion with a particle size of 27 µm at 40 psi and 4) aluminous oxide abrasion with a particle size of 50 µm at 40 psi. The microstructure morphology of the tooth surface was evaluated and residual materials were detected using SEM and EDS analysis of randomly selected specimens. The ceramics were treated with 9.5% hydrofluoric acid-etch and silanized to the prepared dentin prior to cementing with self-adhesive resin cement (RelyX Unicem, 3M ESPE). The shear bond strength was determined at a crosshead speed of 0.5 mm/minute. The results were analyzed with one-way ANOVA, followed by Tukey's test. Particle abrasion treatment of dentin with an aluminous oxide particle provided the highest values of bond strength, while hand instrument excavation was the lowest (p<0.05). Aluminous oxide particle size did not significantly influence the bond strength at 40 psi. The use of low pres- Y Chaiyabutr • JC Kois Clinical RelevanceTooth preparation cleaning protocol surface management with lower pressure aluminous particle abrasion provides a significant improvement in bond strength to dentin.

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Section: Discussionmentioning

confidence: 99%

The Effects of Tooth Preparation Cleansing Protocols on the Bond Strength of Self-adhesive Resin Luting Cement to Contaminated Dentin

Chaiyabutr¹,

Kois²

2008

Operative Dentistry

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“…It has been reported that reducing the particle size down to the nanoscale, closer to the chain size of the monomer, chain/filler interactions are affected, the nanoparticles have the ability to reorient in a stress dissipation mechanism in order to inhibit crack extension in polymers 50,51) ; the chemical change of the surface which became more hydrophilic and reduced the surface tension of the AS 52) in order to decrease the contact angle. Because mechanical interlocking is required to get a good adhesion, hydrophilic AS are needed to avoid adhesive repellency.…”

Section: Discussionmentioning

confidence: 99%

Effects of silver nanoparticles on the bonding of three adhesive systems to fluorotic enamel

Méndez

Martínez-Castañón

Torres-Gallegos

et al. 2017

Dental Materials Journal

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The objective was to evaluate the effect of adding silver nanoparticles into three commercial adhesive systems (Excite™, Adper Prompt L-Pop™ and AdheSE™). Nanoparticles were prepared by a chemical method then mixed with the commercial adhesive systems. This was later applied to the fluorotic enamel, and then micro-tensile bond strength, contact angle measurements and scanning electron microscopy observations were conducted. The commercial adhesive systems achieved the lowest micro-tensile bond strength (Excite™: 11.0±2.1, Adper Prompt L-Pop™: 14.0±5.4 and AdheSE™: 16.0±3.0 MPa) with the highest adhesive failure mode related with the highest contact angle (46.0±0.6º, 30.0±0.5º and 28.0±0.4º respectively). The bond strength achieved in all the experimental adhesive systems (19.0±5.4, 20.0±4.0 and 19.0±3.5 MPa respectively) was statistically higher (p<0.05) than the control and showed the highest cohesive failures related to the lowest contact angle. Adding silver nanoparticles in order to decrease the contact angle improve the adhesive system wetting and its bond strength.

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“…Therefore, to ensure the best bonding results, it is very important to treat the dentin surface properly with phosphoric acid. The main benefits of the dentin surface treatment are: (1) removal of the contaminated and loose layer, (2) increased surface energy, (3) increased surface area, and (4) improved properties of the dentin surface 15) . Etching is an effective way to obtain a proper bonding surface and to clean the surface by removing the smear layer, which in turn increase the wettability of bonding agents.…”

Section: Discussionmentioning

confidence: 99%

“…The dentin discs were then mounted in acrylic blocks and ground flat using 600-grit SiC paper with under flowing water coolant to produce a uniform dentin smear layer. Dentin samples for each study group (n=20 per group) were divided randomly into three subgroups for three etching times (15,30, and 60-s). In this study, a commercial etchant (Ultra-Etch-Ultradent, South Jordan, UT, USA, an 35% aqueous phosphoric acid solution) was used for the etching technique.…”

Section: Subjects and Sample Preparationmentioning

confidence: 99%

Nanostructure evaluation of healthy and fluorotic dentin by atomic force microscopy before and after phosphoric acid etching

et al. 2011

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The aim was to characterize by atomic force microscopy (AFM) the nanostructure of human dentin surfaces affected by dental fluorosis (DF) before and after phosphoric acid etching. This study included 240 human dentin samples classified according to the severity of DF, which were divided into four groups using the Thylstrup-Fejerskov Index (TFI). Samples were analyzed by AFM before and after acid etching for 15, 30, and 60 s. The roughness (Ra) for healthy dentin, and dentin with mild, moderate, and severe fluorosis were 440 nm, 442 nm, 445 nm, and 449 nm, respectively. After 15, 30, and 60 s of acid etching, all healthy and fluorotic dentin samples increased in roughness (p<0.05). The diameter of dentinal tubule orifices (Dt) in healthy human dentin increased after acid etching for 60 s. We conclude that effective etching times are 15 s for healthy and mild dentin fluorosis, 30-s for moderately fluorosed dentin, and 45-60 s for severe fluorotic dentin.

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Effects of surface treatment on the free surface energy of dentin

Cited by 102 publications

References 13 publications

The Effects of Tooth Preparation Cleansing Protocols on the Bond Strength of Self-adhesive Resin Luting Cement to Contaminated Dentin

The Effects of Tooth Preparation Cleansing Protocols on the Bond Strength of Self-adhesive Resin Luting Cement to Contaminated Dentin

Effects of silver nanoparticles on the bonding of three adhesive systems to fluorotic enamel

Nanostructure evaluation of healthy and fluorotic dentin by atomic force microscopy before and after phosphoric acid etching

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