Chemical surface modification of lithium disilicate needles of a silica-based ceramic after HF-etching and ultrasonic bath cleaning: Impact on the chemical bonding with silane

Poulon-Quintin, Angéline; Ogden, E.; Large, Alex; Vaudescal, M.; Labrugère, Christine; Bartala, M.; Bertrand, Caroline

doi:10.1016/j.dental.2021.02.006

Cited by 14 publications

(5 citation statements)

References 44 publications

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“…Furthermore, the 10% acid concentration promoted a thickness removal from ~2.5 to 6.5 μm, depending on the etching time, for e.max Press and Rosetta SP. These findings are in agreement with a previous report, where 9% HF applied for 20 s affected e.max Press surface up to 6 μm deep 40 . The slight difference in the rate, can be related with acid viscosity or protocol used 22 .…”

Section: Discussionsupporting

confidence: 93%

“…These findings are in agreement with a previous report, where 9% HF applied for 20 s affected e.max Press surface up to 6 μm deep. 40 The slight difference in the rate, can be related with acid viscosity or protocol used. 22 In addition, LiSi Press dissolution resistance for these conditions, as well as, for 10% HF acid, corroborates with the previously discussed results.…”

Section: Profilometermentioning

confidence: 99%

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Hydrofluoric acid concentration and etching time affect differently the microstructure and surface properties of pressed lithium disilicate glass ceramics

Alves,

Campos,

Bergamo

et al. 2023

J Esthet Restor Dent

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ObjectiveTo evaluate the effect of different hydrofluoric acid concentrations and etching times on the surface, chemical composition and microstructure of lithium disilicate.Material and MethodsNinety specimens of pressed lithium disilicate (LDS) were obtained (IPS e.max Press, Rosetta SP and LiSi Press). The specimens of each material were divided in two groups according to the hydrofluoric acid concentration: 5% and 10% (n = 15/group), and subdivided according to the etching time: 20, 40 and 60 s (n = 5/group). Crystalline evaluations and chemical composition were performed through x‐ray diffraction (XRD) and energy‐dispersive x‐ray spectroscopy (EDS), respectively. Microstructural analyses were performed by scanning electron microscope (SEM), surface roughness (Ra), and material thickness removal evaluation. Thickness removal and Ra data were analyzed by ANOVA and Tukey test (p < 0.05).ResultsXRD demonstrated characteristic peaks of lithium disilicate crystals, lithium phosphate and of a vitreous phase for all materials. EDS identified different compositions and SEM confirmed different surface responses to acid etching protocols. Material and etching time influenced Ra and material thickness removal (p < 0.05).ConclusionHydrofluoric acid concentration and etching time affect the surface characteristics of LDS differently. LiSi Press presented higher resistance to hydrofluoric acid etching compared to e.max Press and Rosetta SP.Clinical SignificanceApplying the appropriate etching protocol is pivotal to avoid excessive material removal and to prevent jeopardize the mechanical and optical properties of the material.

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Section: Discussionsupporting

confidence: 93%

Section: Profilometermentioning

confidence: 99%

Hydrofluoric acid concentration and etching time affect differently the microstructure and surface properties of pressed lithium disilicate glass ceramics

Alves,

Campos,

Bergamo

et al. 2023

J Esthet Restor Dent

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“…8). [139][140][141][142] Yu et al demonstrated the generation of PF 3 in a reaction between a LiPF 6 -based electrolyte and a silicon anode inside a reactor at 90 °C and conrmed the formation of crystalline Li 2 SiF 6 on the silicon anode by mass spectrometry and X-ray diffraction analysis. 143 The electrically insulating Li 2 SiF 6 (conductivity <10 −10 S cm −1 ) formed on the surface of silicon anodes impedes both lithium-ion and electron transport (Fig.…”

mentioning

confidence: 99%

Liquid electrolyte chemistries for solid electrolyte interphase construction on silicon and lithium-metal anodes

Choi¹,

Park²,

Kim³

et al. 2023

Chem. Sci.

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“…HF acid etching can change the LD surface topography with increased roughness for adhesive bonding by removing or stabilizing surface defects [44]. However, some studies have shown that HF acid etching has the potential to form cracks, which may interfere with the adhesion of resin cements and therefore reduce the bond stability of LD-resin cement [45][46][47]. To minimize these damaging effects of HF acid etching on LD surfaces, subsequent surface treatment using silane coupling agents could ensure a more stable and improved bond strength of LD to resin cements [48][49][50].…”

Section: Discussionmentioning

confidence: 99%

Argon Plasma Treatment Effects on the Micro-Shear Bond Strength of Lithium Disilicate with Dental Resin Cements

Liao,

Lombardo,

2023

Materials

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The low bond strength of lithium disilicate (LD) ceramics to dental resin cements remains a critical issue for dental applications because it leads to frequent replacement and causes tooth tissue destruction and consumption. The objective of this study was to examine the effects of atmospheric non-thermal argon plasma (NTP) treatment on LD to improve its micro-shear bond strength (μSBS) with dental resin cements because LD mostly experiences shear stress for its commonly used dental applications as crowns or veneers. Argon plasma treatment was performed on hydrofluoric (HF) acid-etched LD surfaces, and then commercial resin cements were subsequently applied to the treated LD surfaces. The plasma treatment significantly reduced the water contact angle of the LD surface to less than 10° without changing the surface morphology. The μSBS test was performed with cement-bonded LD samples after 24 h and 30 days, as well as after 1000 cycles of thermal cycling. The test results show that, as compared with the untreated controls, 300 s of plasma treatment significantly improved the LD-resin cement bond strength by 59.1%. After 30 days of storage in DI water and 1000 cycles of thermal cycling, the plasma-treated LD samples show 84.2% and 44.8% higher bond strengths as compared to the control samples, respectively. The plasma treatment effect on LD surfaces diminished rapidly as the bond strength decreased to 25.5 MPa after aging in the air for 1 day prior to primer and cement application, suggesting that primers should be applied to the LD surfaces immediately after the plasma treatment. These results demonstrate that, when applied with caution, plasma treatment can activate LD surfaces and significantly improve the SBS of LD with dental resin cements in both short-term and long-term periods.

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Chemical surface modification of lithium disilicate needles of a silica-based ceramic after HF-etching and ultrasonic bath cleaning: Impact on the chemical bonding with silane

Cited by 14 publications

References 44 publications

Hydrofluoric acid concentration and etching time affect differently the microstructure and surface properties of pressed lithium disilicate glass ceramics

Hydrofluoric acid concentration and etching time affect differently the microstructure and surface properties of pressed lithium disilicate glass ceramics

Liquid electrolyte chemistries for solid electrolyte interphase construction on silicon and lithium-metal anodes

Argon Plasma Treatment Effects on the Micro-Shear Bond Strength of Lithium Disilicate with Dental Resin Cements

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