Influence of an oxygen‐inhibited layer on enamel bonding of dental adhesive systems: surface free‐energy perspectives

Ueta, Hirofumi; Tsujimoto, Akimasa; Barkmeier, Wayne W.; Oouchi, Hajime; Sai, Keiichi; Takamizawa, Toshiki; Latta, Mark; Miyazaki, Masashi

doi:10.1111/eos.12231

Cited by 8 publications

(8 citation statements)

References 32 publications

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“…The

γ_{normalS}^{p}

measurement involves the polar interaction and reflects the degree of polarization . The

γ_{normalS}^{h}

measurement is also related to the hydroxyl groups and reflects hydrophilic interaction . Therefore, phosphoric acid pre‐etching of enamel demineralizes the smear layer and superficial enamel, and increases the number of hydroxyl sites and hydrophilicity, leading to increased

γ_{normalS}^{p}

and

γ_{normalS}^{h}

.…”

Section: Discussionmentioning

confidence: 99%

“…The surface free‐energy value of a solid is considered to be a useful indicator of the wettability of the surface in the Kitazaki–Hata extension of the Young–Dupré theory . Surface free‐energy values are composed of the dispersion force (

γ_{normalS}^{d}

), the polarity force (

γ_{normalS}^{p}

) and the hydrogen‐bonding force (

γ_{normalS}^{h}

), in which

γ_{normalS}^{d}

is one aspect of the van der Waals forces,

γ_{normalS}^{p}

represents the degree of polarization of the surface, and

γ_{normalS}^{h}

indicates the hydrophilicity of the surface . Therefore, the surface free‐energy characteristics of enamel might provide insights into the influence of duration of phosphoric acid pre‐etching on bond durability of universal adhesives.…”

mentioning

confidence: 99%

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Influence of duration of phosphoric acid pre‐etching on bond durability of universal adhesives and surface free‐energy characteristics of enamel

Tsujimoto

Barkmeier

Takamizawa

et al. 2016

European J Oral Sciences

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The purpose of this study was to evaluate the influence of duration of phosphoric acid pre-etching on the bond durability of universal adhesives and the surface free-energy characteristics of enamel. Three universal adhesives and extracted human molars were used. Two no-pre-etching groups were prepared: ground enamel; and enamel after ultrasonic cleaning with distilled water for 30 s to remove the smear layer. Four pre-etching groups were prepared: enamel pre-etched with phosphoric acid for 3, 5, 10, and 15 s. Shear bond strength (SBS) values of universal adhesive after no thermal cycling and after 30,000 or 60,000 thermal cycles, and surface free-energy values of enamel surfaces, calculated from contact angle measurements, were determined. The specimens that had been pre-etched showed significantly higher SBS and surface free-energy values than the specimens that had not been pre-etched, regardless of the aging condition and adhesive type. The SBS and surface free-energy values did not increase for pre-etching times of longer than 3 s. There were no significant differences in SBS values and surface free-energy characteristics between the specimens with and without a smear layer. The results of this study suggest that phosphoric acid pre-etching of enamel improves the bond durability of universal adhesives and the surface free-energy characteristics of enamel, but these bonding properties do not increase for phosphoric acid pre-etching times of longer than 3 s.

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“…The

γ_{normalS}^{p}

measurement involves the polar interaction and reflects the degree of polarization . The

γ_{normalS}^{h}

γ_{normalS}^{p}

and

γ_{normalS}^{h}

.…”

Section: Discussionmentioning

confidence: 99%

γ_{normalS}^{d}

), the polarity force (

γ_{normalS}^{p}

) and the hydrogen‐bonding force (

γ_{normalS}^{h}

), in which

γ_{normalS}^{d}

is one aspect of the van der Waals forces,

γ_{normalS}^{p}

represents the degree of polarization of the surface, and

γ_{normalS}^{h}

mentioning

confidence: 99%

Influence of duration of phosphoric acid pre‐etching on bond durability of universal adhesives and surface free‐energy characteristics of enamel

Tsujimoto

Barkmeier

Takamizawa

et al. 2016

European J Oral Sciences

Self Cite

View full text Add to dashboard Cite

show abstract

“…Our results are compatible with other reports on the same and various other composites 18,28) . The SFE analysis is used to estimate the chemical state of a material surface 15,[31][32][33][34][35][36][37][38][39][40] . We reported that the SFE is strongly correlated to the microstructure of the CAD/CAM composite, affecting its adhesion to the resin cement in our previous report 15) .…”

Section: Discussionmentioning

confidence: 99%

Effects of alumina airborne-particle abrasion on the surface properties of CAD/CAM composites and bond strength to resin cement

et al. 2021

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“…For this purpose, contact angle measurements on hard surfaces provide information about surface-free energy in relation to bonding characteristics of the solid materials [14,15]. Surface free-energy of a solid is defined as an indicator of surface wettability and comprises dispersion forces, polarity forces, and hydrogen-bonding forces [16,17]. While dispersion forces are one aspect of van der Waals forces, polarity forces represent electric/metallic interactions and dipolar interactions, and hydrogen-bonding forces indicate surface hydrophilicity [16,17].…”

Section: Palavras-chavementioning

confidence: 99%

Evaluation of wettability characteristics and adhesion of resin composite to photo-polymerized pulp-capping materials with and without bioactive glass

Tulumbacı

Korkut

Özer

et al. 2019

BDS

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Objective: The purpose of this study was to evaluate mechanical and physical properties of three different light-curable resin-based materials (TheraCal LC, Biner LC, and CalciPlus LC) with or without BAG. Material and Methods: 15 cylindrically shaped specimens (n=5) were prepared for contact angle test. The test values (Θ) were determined with the sessile drop method using three test liquids. 30 acrylic cylindrical blocks were prepared, and holes of (6mmx1mm) were made in the center of the cylinders for shear bond strength test. An adhesive system and a restorative composite material were applied via cylindrically shaped plastic tubes of (2mmx2mm) at the center of the light-curable resin-based material surfaces. The specimens were mounted in a universal testing machine. A crosshead speed of 1 mm/min was applied to each specimen using a knife-edge blade. Results: The highest (74.77°±13.56) and the lowest (35.35°±12.89) contact angle values were recorded for the MB Biner LC group and the CalciPlus LC, respectively. Statistically significant differences observed in contact angle values between the test groups (p<0.05). The surface free energy of Biner LC (γS 36.22) was lower than that of TheraCal LC (γS 44.70) and CalciPlus LC (γS 46.20) (p<0.05). There was no significant difference in shear bond strength values between TheraCal LC and CalciPlus LC (p>0.05). Conclusions: Hydrophilic property of Theracal LC and Calciplus LC resulted in better bonding strength in these materials. The BAG used in Calciplus LC did not adversely affect mechanical and surface properties of the material.

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Influence of an oxygen‐inhibited layer on enamel bonding of dental adhesive systems: surface free‐energy perspectives

Cited by 8 publications

References 32 publications

Influence of duration of phosphoric acid pre‐etching on bond durability of universal adhesives and surface free‐energy characteristics of enamel

Influence of duration of phosphoric acid pre‐etching on bond durability of universal adhesives and surface free‐energy characteristics of enamel

Effects of alumina airborne-particle abrasion on the surface properties of CAD/CAM composites and bond strength to resin cement

Evaluation of wettability characteristics and adhesion of resin composite to photo-polymerized pulp-capping materials with and without bioactive glass

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