Influence of particle abrasion or hydrofluoric acid etching on lithium disilicate flexural strength

Menees, Timothy S.; Lawson, Nathaniel C.; Beck, Preston; Burgess, John O.

doi:10.1016/j.prosdent.2014.04.021

Cited by 65 publications

(54 citation statements)

References 23 publications

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“…Lower bond strength was obtained if the cement was applied without HF etching of the ceramic surface (Table 2), which confirmed the findings reported in earlier studies 1338. The large difference in bond strength contingent on HF etching is explained by the difference in surface texture (Figures 4a and 4c).…”

Section: Discussionsupporting

confidence: 89%

“…To produce micromechanical retention, the surface is prepared by airborne-particle abrasion and/or etching with hydrofluoric acid (HF). However, airborne-particle abrasion is not recommended due to a significant reduction in the flexural strength of IPS e.max CAD (Ivoclar Vivadent, Schaan, Liechtenstein) 13. HF etching dissolves the glass phase from the matrix, thus creating micro-undercuts and increasing the surface area 14.…”

Section: Introductionmentioning

confidence: 99%

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Bonding of the silane containing multi-mode universal adhesive for lithium disilicate ceramics

et al. 2017

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ObjectivesThis study evaluated the influence of a multi-mode universal adhesive (MUA) containing silane (Single Bond Universal, 3M EPSE) on the bonding of resin cement to lithium disilicate.Materials and MethodsThirty IPS e.max CAD specimens (Ivoclar Vivadent) were fabricated. The surfaces were treated as follows: Group A, adhesive that did not contain silane (ANS, Porcelain Bonding Resin, Bisco); Group B, silane (S) and ANS; Group C, hydrofluoric acid (HF), S, and ANS; Group D, MUA; Group E, HF and MUA. Dual-cure resin cement (NX3, Kerr) was applied and composite resin cylinders of 0.8 mm in diameter were placed on it before light polymerization. Bonded specimens were stored in water for 24 hours or underwent a 10,000 thermocycling process prior to microshear bond strength testing. The data were analyzed using multivariate analysis of variance (p < 0.05).ResultsBond strength varied significantly among the groups (p < 0.05), except for Groups A and D. Group C showed the highest initial bond strength (27.1 ± 6.9 MPa), followed by Group E, Group B, Group D, and Group A. Thermocycling significantly reduced bond strength in Groups B, C, and E (p < 0.05). Bond strength in Group C was the highest regardless of the storage conditions (p < 0.05).ConclusionsSurface treatment of lithium disilicate using HF and silane increased the bond strength of resin cement. However, after thermocycling, the silane in MUA did not help achieve durable bond strength between lithium disilicate and resin cement, even when HF was applied.

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Section: Discussionsupporting

confidence: 89%

Section: Introductionmentioning

confidence: 99%

Bonding of the silane containing multi-mode universal adhesive for lithium disilicate ceramics

et al. 2017

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“…It has also been indicated that airborne‐particle abrasion can damage the surfaces and a volume loss can happen in the material . Menees et al concluded that airborne‐particle abrasion caused a decrease in the flexural strength of lithium disilicate ceramic, since microfractures and mechanical stresses occurred at the treated surfaces. The decrease in flexural strength of the etched and airborne‐particle abraded specimens of lithium disilicate ceramic in this study may be explained by the destructive effect of the treatments on the surface of the material.…”

Section: Discussionmentioning

confidence: 99%

The Effect of Surface Treatments on the Mechanical and Optical Behaviors of CAD/CAM Restorative Materials

Kurtulmuş-Yılmaz¹,

Cengiz

Ongun³

et al. 2018

Journal of Prosthodontics

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“…However, controversy remains regarding the impact of the etching process on the mechanical properties of lithium disilicate ceramics. Menees et al evaluated the flexural strength of a lithium disilicate ceramic following hydrofluoric acid etching with two concentrations (i.e., 5% and 9.5%), and concluded that the microstructural changes promoted by the hydrofluoric acid did not adversely affect the flexural strength of the ceramic. However, Zogheib et al demonstrated that hydrofluoric acid etching weakened lithium disilicate ceramics.…”

Section: Introductionmentioning

confidence: 99%

Effect of etching with distinct hydrofluoric acid concentrations on the flexural strength of a lithium disilicate‐based glass ceramic

et al. 2016

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This study examined the effects of distinct hydrofluoric acid concentrations on the mechanical behavior of a lithium disilicate-based glass ceramic. Bar-shaped specimens were produced from ceramic blocks (e.max CAD, Ivoclar Vivadent). The specimens were polished, chamfered, and sonically cleaned in distilled water. The specimens were randomly divided into five groups (n = 23). The HF1, HF3, HF5, and HF10 specimens were etched for 20 s with acid concentrations of 1%, 3%, 5%, and 10%, respectively, while the SC (control) sample was untreated. The etched surfaces were evaluated using a scanning electron microscope and an atomic force microscope. Finally, the roughness was measured, and 3-point bending flexural tests were performed. The data were analyzed using one-way analysis of variance (ANOVA) and Tukey's test (α = 0.05). The Weibull modulus and characteristic strength were also determined. No statistical difference in the roughness and flexural strength was determined among the groups. The structural reliabilities (Weilbull moduli) were similar for the tested groups; however, the characteristic strength of the HF1 specimen was greater than that of the HF10 specimen. Compared with the untreated ceramic, the surface roughness and flexural strength of the ceramic were unaffected upon etching, regardless of the acid concentration. © 2016 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater, 105B: 885-891, 2017.

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Influence of particle abrasion or hydrofluoric acid etching on lithium disilicate flexural strength

Cited by 65 publications

References 23 publications

Bonding of the silane containing multi-mode universal adhesive for lithium disilicate ceramics

Bonding of the silane containing multi-mode universal adhesive for lithium disilicate ceramics

The Effect of Surface Treatments on the Mechanical and Optical Behaviors of CAD/CAM Restorative Materials

Effect of etching with distinct hydrofluoric acid concentrations on the flexural strength of a lithium disilicate‐based glass ceramic

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