Aspects of adhesion tests on resin–glass ceramic bonding

Wong, Andrew Chi Ho; Tian, Tian; Tsoi, James Kit‐Hon; Burrow, Michael F.; Matinlinna, Jukka Pekka

doi:10.1016/j.dental.2017.06.013

Cited by 31 publications

(21 citation statements)

References 44 publications

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“…Furthermore, cutting the sintered zirconia specimen into a micro-tensile bond strength sample might involve heat and water, which may induce surface flaws, grains enlargement [38] and possibly t→m transformation. As such, other test methods such as flexural bond strength test [12] that have higher sensitivity could be utilized. Further studies are necessary as these tests are rarely performed.…”

Section: Discussionmentioning

confidence: 99%

“…However, some clinical studies have reported restoration debonding as a type of failure [9]. Unlike silica-based ceramics, which can be hydrofluoric acid (HF)-etched, followed by silane coupling agent application before resin cementation that yields high resin-ceramic bond strength [10][11][12], zirconia is inherently non silica-based, chemically inert, and resists HF treatment with the exception of high temperature HF treatment [13]. Therefore, it is difficult to achieve a strong resin bonding to zirconia with silanes [14].…”

Section: Introductionmentioning

confidence: 99%

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Dental Resin-Zirconia Bonding Promotion Using High-Silica PVD Coating with High Ionization Sputtering Processing

et al. 2019

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Purpose: To evaluate the effect of high-silica coating deposited by high-silica physical vapor deposition (PVD) as a chemical bonding method on resin-zirconia bond strength under different aging conditions. Methods: Twelve Y-TZP blocks were used as the substrates. Four resin cement stubs were bonded on each Y-TZP block, with a total number of 48 resin cement stubs. Two test groups (n = 24) were evaluated: conventional Tribochemical silica-coating (TSC) and high-silica PVD with high ionization sputtering processing. Experimental silane primer (MPS) was brushed over the surface treated Y-TZP blocks, then a polyethylene mold was placed over the coated Y-TZP blocks and filled with the adhesive resin cement, then light-cured for 40 s. The shear bond strength (SBS) was then evaluated in dry condition and after thermo-cycling for 6000 cycles. Surface roughness, mode of failure, surface topography and elemental analysis were also evaluated. Results: In dry condition, PVD-coated zirconia specimens showed significantly higher mean SBS values (11.7 ± 1.3 MPa) compared to TSC (10.2 ± 1.1 MPa) (p = 0.027). The SBS values of TSC and PVD-coated samples after thermo-cycling were higher than in dry condition, but with no statistical significant difference (p > 0.05). Tetragonal-to-monoclinic phase transformation was detected in TSC, but not in PVD-coated zirconia. Significant decrease in surface roughness of PVD samples compared to TSC samples (p < 0.001). The silica content in PVD coating was 51% as detected by EDX. Conclusions: High-silica PVD coating on zirconia can give a reliable resin-zirconia chemical bond without any phase transformation and surface destruction by conventional grit-blasting.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Dental Resin-Zirconia Bonding Promotion Using High-Silica PVD Coating with High Ionization Sputtering Processing

et al. 2019

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“…-Inside the blade: cracks at the bonding resin, missing adhesive, discontinuities on the sandwich, delaminations within the glass fiber reinforced plastics (GFRP) [45] or the sandwich [46], cracks on the web, excess bonding resin [47], problems in the bonding, waves, air inclusions, etc.…”

Section: There Are Several Types Of Blade Damage Depending On the Locmentioning

confidence: 99%

Condition monitoring of wind turbine pitch controller: A maintenance approach

et al. 2018

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With the increase of wind power capacity worldwide, researchers are focusing their attention on the operation and maintenance of wind turbines. A proper pitch controller must be designed to extend the life cycle of a wind turbine's blades and tower. The pitch control system has two main, but conflicting, objectives: to maximize the wind energy captured and converted into electrical energy and to minimize fatigue and mechanical load. Four metrics have been proposed to balance these two objectives. Also, diverse pitch controller strategies are proposed in this paper to evaluate these objectives. This paper proposes a novel metrics approach to achieve the conflicting objectives with a maintenance focus. It uses a 100 kW wind turbine as a case study to simulate the proposed pitch control strategies and evaluate with the metrics proposed. The results are showed in two tables due to two different wind models are used.

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“…Ceramics have increasingly become the best option of esthetic restoration of dental structures. The factors that have contributed to the choice of this material are mechanical strength, biocompatibility and esthetics (ZOGHEIB et al, 2011;WONG et al, 2017;HAKIMANEH, 2018). Current ceramic systems include lithium disilicate, glass infiltrated alumina and zirconia, and high-density alumina or zirconia ceramic systems (SANTOS et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Effect of commercial silanes on bond strength of resin cement to lithium disilicate ceramic

et al. 2020

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The aim of this study was to evaluate the effect of different commercial silanes on microshear bond strength of resin cement to lithium disilicate ceramic. Twenty ceramic samples with 10 mm in length, 10 mm wide and 3 mm in thickness were fabricated, etched with 10% hydrofluoric acid for 20 seconds, and divided into 5 groups, according to the commercial silane applied: G1- RelyX Ceramic Primer (3M ESPE), G2- Angelus Silane, G3- Prosil (FGM), G4- Dentsply Silane (Dentsply) and G5- Bis-Silane (Bisco). Silanes were applied in accordance to manufacturers’ recommendations. Addition silicone molds with 1 mm in thickness, 10 mm in diameter and 3 perforations with 1 mm in diameter each one, were placed on ceramic and filled with the resin cement Rely X ARC (3M ESPE) in all groups. Light activation was performed with LED Bluephase G2 (Ivoclar Vivadent) at 1200 mW/cm2, for 30 seconds. Samples were maintained in 100% humidity at 37°C for 24 hours and submitted to microshear test. The data (MPa) were submitted to one-way ANOVA and Tukey test (α=0.05). The results obtained for each group were: G1: 22.39±2.99; G2: 23.35±4.08; G3: 26.05±5.46; G4: 18.56±4.09; G5: 25.26±4.10. Statistical analysis showed significantly lower microshear bond strength for G4. Fracture pattern analysis showed predominance of adhesive failures in G1 and G2. G3 and G5 presented higher percentage of cohesive failures in ceramic, and G4 showed mixed, adhesive and cohesive fractures with similar percentages. It was concluded that different silanes showed influence on the lithium disilicate ceramic – resin cement bond strength. Key Words: Silanes. Ceramics. Cementation. Shear strength.

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Aspects of adhesion tests on resin–glass ceramic bonding

Cited by 31 publications

References 44 publications

Dental Resin-Zirconia Bonding Promotion Using High-Silica PVD Coating with High Ionization Sputtering Processing

Dental Resin-Zirconia Bonding Promotion Using High-Silica PVD Coating with High Ionization Sputtering Processing

Condition monitoring of wind turbine pitch controller: A maintenance approach

Effect of commercial silanes on bond strength of resin cement to lithium disilicate ceramic

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