Micro versus Macro Shear Bond Strength Testing of Dentin-Composite Interface Using Chisel and Wireloop Loading Techniques

Ismail, A Mamdouh; Bourauel, Christoph; El-Banna, Ahmed; El-Din, Tarek Salah

doi:10.3390/dj9120140

Cited by 27 publications

(29 citation statements)

References 30 publications

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“…The methods used in vitro to measure the bond strength between the resin luting agents and the ceramic materials are shear and tensile, respectively micro-shear and micro-tensile tests [ 24 ]. In the literature, it is conceded that these tests are not universally accepted as testing methods, and each of them have their own advantages and limitations [ 25 ]. These tests are recommended for brittle materials, such as glass ceramics [ 26 ].…”

Section: Discussionmentioning

confidence: 99%

Effect of Different Etching Times with Hydrofluoric Acid on the Bond Strength of CAD/CAM Ceramic Material

et al. 2022

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The objective of this study was to evaluate the influence of hydrofluoric acid (HF) and conditioning time on the micro-shear bond strength (µSBS) between dual-cure resin cement and glass-ceramic materials, such as lithium disilicate ceramic (IPS e.max CAD, Ivoclar Vivadent) (EX) and leucite-reinforced ceramic (IPS Empress CAD, Ivoclar Vivadent) (EP), and also a hybrid ceramic (Vita Enamic, Vita Zahnfabrik) (VE). Eighteen sections with 1 mm thickness were cut from each CAD/CAM material and randomly divided into three groups, according to the surface etching time (30 s, 60 s, 90 s). The surface treatment was performed using 9.5% HF acid gel, then resin cement was applied on the prepared ceramic plates and light cured. µSBS values between resin cement and the ceramic material were measured with a universal testing machine at a crosshead speed of 0.5 mm/min until the failure occurred. The fractured surfaces of specimens were microscopically evaluated, and failure modes were classified as: adhesive between resin cement and ceramic, cohesive within ceramic or cement and mixed failure. Surface roughness of etched samples was examined using a scanning electron microscope. Obtained data were statistically analysed using one-way analysis of variance (ANOVA) and Bonferroni post hoc test with a level of significance α = 0.05. The results of the statistical methods applied indicate that µSBS mean difference for leucite-reinforced ceramic (EP) was statistically significant (p < 0.05). However, µSBS values for hybrid ceramic (VE) and lithium disilicate ceramic (EX) were not affected, from a statistical point of view, by the conditioning time (p > 0.05).

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Section: Discussionmentioning

confidence: 99%

Effect of Different Etching Times with Hydrofluoric Acid on the Bond Strength of CAD/CAM Ceramic Material

et al. 2022

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“…Each crown was then sectioned mesiodistally into two halves, using a precision diamond saw (IsoMet 4000; Buehler, USA) while the roots were sectioned transversally 2 mm below the cementoenamel junction, producing 90 coronal halves. Each coronal half was fixed in acrylic resin with its labial surface facing upwards [13]. The center of each embedded coronal half was flattened with a 600-grit silicon carbide paper for 60 seconds to create a smooth, flat enamel surface for treatment and bonding of composite resin [3].…”

Section: Specimen Preparationmentioning

confidence: 99%

“…N881328) was applied actively to the polished enamel surface, followed by gentle air jet for 10 seconds according to manufacturer's instructions. Two tubes were placed over the adhesive coated enamel surface before light curing [13]. The adhesive was light cured for 20 seconds using 1S LED curing unit light (CICADA Dental Instruments Co. Ltd., Guangdong, China) [14].…”

Section: Application Of Antioxidants and Bonding Proceduresmentioning

confidence: 99%

“…Silicon tubes were then vertically sectioned carefully with a sharp lancet giving two composite stubs bonded to the enamel. Specimens were then stored in distilled water at 37 °C in an incubator for 24 hours until testing [13].…”

Section: Application Of Antioxidants and Bonding Proceduresmentioning

confidence: 99%

“…The μSBS was performed using universal testing machine (Instron model 3345, England) with cross head speed of 0.5 mm/min using wire loop driving the load onto the specimen at the enamel-composite interface till specimen debonding [13].…”

Section: Micro Sbs Testmentioning

confidence: 99%

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Effect of heating antioxidants and delayed bonding on bond strength to bleached enamel

Soliman

Sherif

Alian

2022

ijhs

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Objective: The aim of this study was to evaluate the influence of heating natural antioxidants on their antioxidant activity and on micro shear bond strength of composite resin to bleached enamel. Materials and methods. A hundred-eighty flowable composite cylindrical specimens of 0.8 mm diameter and 1 mm length were bonded to enamel substrate for microshear bond strength evaluation. Six study groups were created (n=30). Group 1: No bleaching, Group 2: Bleaching only, Group 3: Bleaching+ Pine Bark Extract at Room temperature, Group 4: Bleaching + Pine Bark Extract preheated to 60° C. Group 5: Bleaching+ Grape Seed Extract at Room temperature, Group 6: Bleaching+ Grape Seed Extract preheated to 60° C. All groups were tested immediately (subgroup a), after one week (subgroup b) and two weeks (subgroup c). Both extracts were tested for their antioxidant activity using DPPH assay at room temperature, 40° and 60°. Two- and one- way ANOVA were used to explore the effect of different surface treatments and bonding time on microshear bond strength. Results. DPPH results showed the heated antioxidant extracts to have significantly higher antioxidant activity than their non-heated counterparts.

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Evaluation of the effect of nano‐graphene oxide on shear bond strength of conventional and resin‐modified glass ionomer cement

Ghodrati,

Sharafeddin

2023

Clinical & Exp Dental Res

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ObjectivesRecently, nano‐graphene oxide (nGO), a material with unique mechanical properties, has been introduced to improve the properties of glass ionomer cement (GIC). The purpose of this study was to investigate the effect of adding nGO on the shear bond strength (SBS) of conventional (CGIC) and resin‐modified GIC (RMGIC).MethodsSixty intact molars were mounted and their occlusal surface was cut at a depth of 1 mm below the dentinoenamel junction. 1 wt.% and 2 wt.% of nGO (US Research Nanomaterials, Inc.) were added to CGIC and RMGIC (GC Corporation). The samples were randomly divided into six groups (n = 10), including 1: CGIC, 2: CGIC + 1% GO, 3: CGIC + 2% GO, 4: RMGIC, 5: RMGIC + 1% GO, and 6: RMGIC + 2% GO. Plastic molds were placed on the surface of the dentin pretreated with 10% polyacrylic acid (GC Corporation) and filled with prepared cement according to the manufacturer's instruction. After 24 h of storage in an incubator, the SBS test was done by the universal testing machine. Data were analyzed using two‐way analysis of variance and post hoc Tukey tests (p < .05).ResultsIn the group of CGIC, mean SBS was significantly lower than all other study groups (p < .001), and groups 5 (RMGIC + 1% GO) and 6 (RMGIC + 2% GO) showed significantly higher values compared to all other study groups (p < .001). However, the difference between groups 2 and 3, as well as the difference between groups 5 and 6, was not significant (p = .999 andp = .994, respectively). RMGI groups had significantly higher SBS than their corresponding CGIC groups.ConclusionsThe addition of 1% and 2% nGO significantly increased the SBS of CGIC and RMGIC to the dentin, which can be considered as a promising point for wider clinical application of this material.

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Micro versus Macro Shear Bond Strength Testing of Dentin-Composite Interface Using Chisel and Wireloop Loading Techniques

Cited by 27 publications

References 30 publications

Effect of Different Etching Times with Hydrofluoric Acid on the Bond Strength of CAD/CAM Ceramic Material

Effect of Different Etching Times with Hydrofluoric Acid on the Bond Strength of CAD/CAM Ceramic Material

Effect of heating antioxidants and delayed bonding on bond strength to bleached enamel

Evaluation of the effect of nano‐graphene oxide on shear bond strength of conventional and resin‐modified glass ionomer cement

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