The Effect of Energy Application Sequence on the Microtensile Bond Strength of Different C-factor Cavity Preparations

10.2341/06-30 ◽  
2007 ◽  
Vol 32 (2) ◽  
pp. 124-132 ◽  
Author(s):  
G. Maghaireh ◽  
M. R. Bouschlicher ◽  
F. Qian ◽  
S. R. Armstrong
Keyword(s):  
Bond Strength ◽  
Clinical Relevance ◽  
High Irradiance ◽  
Resin Composites ◽  
Microtensile Bond Strength ◽  
Light Curing ◽  
Bond Strengths ◽  
Energy Application

Clinical Relevance Light curing of resin composites in high C-factor cavity preparations using a high irradiance energy application sequence may lead to decreased bond strength. However, the high irradiance energy application sequence did not result in lower bond strengths in lower C-factor cavity preparations.

Microtensile Bond Strength of Glass Ionomer Cements to Artificially Created Carious Dentin

2006 ◽  
Vol 31 (5) ◽  
pp. 590-597 ◽  
Author(s):  
K. Choi ◽  
Y. Oshida ◽  
J. A. Platt ◽  
M. A. Cochran ◽  
B. A. Matis ◽  
...  
Keyword(s):  
Bond Strength ◽  
Clinical Relevance ◽  
Glass Ionomer Cements ◽  
Glass Ionomer ◽  
Microtensile Bond Strength ◽  
Bond Strengths ◽  
The Mean

Clinical Relevance The mean microtensile bond strengths of glass ionomer cements to carious dentin were significantly lower than to sound dentin.

Adhesive Bond Strengths to Enamel and Dentin Using Recommended and Extended Treatment Times

2010 ◽  
Vol 35 (1) ◽  
pp. 112-119 ◽  
Author(s):  
N. S. Kimmes ◽  
W. W. Barkmeier ◽  
R. L. Erickson ◽  
M. A. Latta
Keyword(s):  
Bond Strength ◽  
Clinical Relevance ◽  
Treatment Time ◽  
Adhesive Bond ◽  
Resin Composites ◽  
Adhesive Systems ◽  
Etch And Rinse ◽  
Tooth Surfaces ◽  
Bond Strengths ◽  
Self Etch

Clinical Relevance Self-etch adhesive systems are promoted as being more efficient for bonding procedures by using fewer treatment steps to condition tooth surfaces for bonding resin-based materials. Concern has been expressed regarding the ability of the newer self-etch adhesives to yield strong, durable bonds when compared to more traditional etch-and-rinse systems. Extending the treatment time of etch-and-rinse and self-etch adhesives does not appear to result in relevant increases in the bond strength of resin composites to enamel or dentin.

Prolonged Curing Time Reduces the Effects of Simulated Pulpal Pressure on the Bond Strength of One-step Self-etch Adhesives

2013 ◽  
Vol 38 (5) ◽  
pp. 545-554 ◽  
Author(s):  
VP Feitosa ◽  
TF Watson ◽  
RP Vitti ◽  
A Bacchi ◽  
L Correr-Sobrinho ◽  
...  
Keyword(s):  
Bond Strength ◽  
Failure Mode ◽  
Pressure Control ◽  
Cohesive Failure ◽  
Control Groups ◽  
Microtensile Bond Strength ◽  
Light Curing ◽  
One Step ◽  
Bond Strengths ◽  
Self Etch

SUMMARY The aim of this study was to evaluate the effects of extended light-curing procedures on the microtensile bond strength (μTBS) of one-step self-etch adhesives (1-SEAs) submitted to simulated pulpal pressure. Coronal deep-dentin specimens were bonded using Clearfil S3 Bond (S3), Adper Easy Bond (EB), or G-Bond Plus (GB) following the manufacturers' recommendations and light-cured for 10 seconds or 40 seconds. The dentin-bonded specimens were stored in distilled water for 24 hours without pulpal pressure (control) or submitted to 20 cm H2O simulated pulpal pressure for 24 hours. The specimens were cut into matchsticks and subjected to μTBS testing. The data were statistically analyzed using the three-way analysis of variance and Tukey's tests (p<0.05). Debonded sticks were investigated through scanning electron microscopy. EB obtained higher bond strengths than GB and S3. However, prolonged light activation (40 seconds) provided higher μTBS for all adhesives when submitted to pulpal pressure. Conversely, pulpal pressure caused a drop in μTBS in EB and S3 when light-cured for 10 seconds. A mixed failure mode was mainly attained for the control groups, whereas the specimens submitted to pulpal pressure failed in the adhesive mode. The μTBS of GB was not affected by pulpal pressure when light-cured for 10 seconds. Adhesive was the most prevalent failure mode, except when light-cured for 40 seconds, which showed predominantly cohesive failure. Extended curing times improved the resistance of 1-SEAs to simulated pulpal pressure.

Effect of Shortened Light-Curing Modes on Bulk-Fill Resin Composites

2020 ◽  
Vol 45 (5) ◽  
pp. 496-505
Author(s):  
CS Sampaio ◽  
PG Pizarro ◽  
PJ Atria ◽  
R Hirata ◽  
M Giannini ◽  
...  
Keyword(s):  
Tensile Strength ◽  
Bond Strength ◽  
Shear Bond Strength ◽  
Light Output ◽  
High Mode ◽  
Resin Composites ◽  
Curing Time ◽  
Micro Computed Tomography ◽  
Polymerization Shrinkage ◽  
Light Curing

Clinical Relevance Shortened light curing does not affect volumetric polymerization shrinkage or cohesive tensile strength but negatively affects the shear bond strength of some bulk-fill resin composites. When performing shortened light curing, clinicians should be aware of the light output of their light-curing units. SUMMARY Purpose: To evaluate volumetric polymerization shrinkage (VPS), shear bond strength (SBS) to dentin, and cohesive tensile strength (CTS) of bulk-fill resin composites (BFRCs) light activated by different modes. Methods and Materials: Six groups were evaluated: Tetric EvoCeram bulk fill + high mode (10 seconds; TEC H10), Tetric EvoFlow bulk fill + high mode (TEF H10), experimental bulk fill + high mode (TEE H10), Tetric EvoCeram bulk fill + turbo mode (five seconds; TEC T5), Tetric EvoFlow bulk fill + turbo mode (TEF T5), and experimental bulk fill + turbo mode (TEE T5). Bluephase Style 20i and Adhese Universal Vivapen were used for all groups. All BFRC samples were built up on human molar bur-prepared occlusal cavities. VPS% and location were evaluated through micro–computed tomography. SBS and CTS tests were performed 24 hours after storage or after 5000 thermal cycles; fracture mode was analyzed for SBS. Results: Both TEC H10 and TEE H10 presented lower VPS% than TEF H10. However, no significant differences were observed with the turbo-curing mode. No differences were observed for the same BFRC within curing modes. Occlusal shrinkage was mostly observed. Regarding SBS, thermal cycling (TC) affected all groups. Without TC, all groups showed higher SBS values for high mode than turbo mode, while with TC, only TEC showed decreased SBS from high mode to turbo modes; modes of fracture were predominantly adhesive. For CTS, TC affected all groups except TEE H10. In general, no differences were observed between groups when comparing the curing modes. Conclusions: Increased light output with a shortened curing time did not jeopardize the VPS and SBS properties of the BFRCs, although a decreased SBS was observed in some groups. TEE generally showed similar or improved values for the tested properties in a shortened light-curing time. The VPS was mostly affected by the materials tested, whereas the SBS was affected by the materials, curing modes, and TC. The CTS was not affected by the curing modes.

Influence of Er,Cr:YSGG Laser Treatment on Microtensile Bond Strength of Adhesives to Enamel

2008 ◽  
Vol 33 (4) ◽  
pp. 448-455 ◽  
Author(s):  
M. V. Cardoso ◽  
J. De Munck ◽  
E. Coutinho ◽  
R. B. Ermis ◽  
K. Van Landuyt ◽  
...  
Keyword(s):  
Bond Strength ◽  
Laser Irradiation ◽  
Laser Treatment ◽  
Clinical Relevance ◽  
Microtensile Bond Strength ◽  
Morphological Alterations

Clinical Relevance Er,Cr:YSGG laser irradiation produced morphological alterations on enamel, which may adversely influence the bond strength of certain adhesives, depending on their approach and composition.

Influence of Thermal and Mechanical Load Cycling on Microtensile Bond Strengths of Total and Self-etching Adhesive Systems

10.2341/05-20 ◽  
2006 ◽  
Vol 31 (2) ◽  
pp. 240-247 ◽  
Author(s):  
F. H. O. Mitsui ◽  
A. R. Peris ◽  
A. N. Cavalcanti ◽  
G. M. Marchi ◽  
L. A. F. Pimenta
Keyword(s):  
Bond Strength ◽  
Clinical Relevance ◽  
Mechanical Load ◽  
Adhesive System ◽  
Adhesive Systems ◽  
System Type ◽  
Load Cycling ◽  
Bond Strengths

Clinical Relevance Bond strength is affected by the combination of thermal and mechanical load cycling. However, results vary greatly with the number of mechanical cycles and adhesive system type (total or self-etching).

scholarly journals Durability of Enamel Bonding Using One-step Self-etch Systems on Ground and Unground Enamel

10.2341/08-58 ◽  
2009 ◽  
Vol 34 (2) ◽  
pp. 181-191 ◽  
Author(s):  
A. Reis ◽  
S. K. Moura ◽  
A. Pellizzaro ◽  
K. Dal-Bianco ◽  
A. M. Andrade ◽  
...  
Keyword(s):  
Bond Strength ◽  
Clinical Relevance ◽  
Water Storage ◽  
Adhesive System ◽  
One Step ◽  
Bond Strengths ◽  
Self Etch

Clinical Relevance The improvement of resin-enamel bond strengths after using Si-C paper and diamond burs for enamel preparation is material dependent. No degradation of enamel bond strength could be observed for any one-step self-etch adhesive system after 12 months of water storage.

scholarly journals Low- and high-viscosity bulk-fill resin composites: a comparison of microhardness, microtensile bond strength, and fracture strength in restored molars

2021 ◽  
Vol 34 (2) ◽  
pp. 173-182
Author(s):  
Fabiana França ◽  
Jonathan Tenuti ◽  
Isabela Broglio ◽  
Lara Paiva ◽  
Roberta Basting ◽  
...  
Keyword(s):  
Bond Strength ◽  
Fracture Strength ◽  
High Viscosity ◽  
Fracture Pattern ◽  
Resin Composites ◽  
Microtensile Bond Strength ◽  
Thermomechanical Cycling ◽  
Low Viscosity ◽  
Significant Difference ◽  
Knoop Microhardness

The aim of this study was to compare low- and high-viscosity bulk-fill composites for Knoop microhardness (KHN), microtensile bond strength (MTBS) to dentin in occlusal cavities, and fracture strength (FS) in molars with mesialocclusal-distal restoration. Disk-shaped samples with different thicknesses (2 or 4 mm) of low-viscosity (SDR Flow, Dentsply) and high-viscosity bulk-fill composites (Filtek BulkFill, 3M ESPE; and Tetric-N Ceram Bulk Fill, Ivoclar Vivadent) were prepared for top and bottom KHN analysis (n=10). MTBS to dentin and fracture pattern was evaluated in human molars with occlusal cavities restored with (n=10): conventional nanocomposite (Z350XT, 3M ESPE), low-viscosity (Filtek Bulk-fill Flow, 3M ESPE) or high-viscosity bulk-fill composites (Filtek BulkFill). The FS and fracture pattern of human molar with mesial-occlusal-distal restorations submitted or not to thermomechanical cycling were investigated (n=10) using: intact tooth (control), and restoration based on conventional microhybrid composite (Z250, 3M ESPE), low-viscosity (SDR Flow) or high-viscosity bulk-fill composites (Filtek BulkFill). The data were submitted to split-plot ANOVA (KHN), one-way ANOVA (MTBS), two-way ANOVA (FS) followed by Tukey’s test (α=0.05). For KHN, there was no significant difference for the resin composites between the top and bottom. For MTBS, no significant differences among the materials were detected; however, the low-viscosity composite presented lower frequency of adhesive failures. For FS, there was no significant difference between composites and intact tooth regardless of thermomechanical cycling. Low- and high-viscosity bulk-fill composites have comparable microhardness and microtensile bond strength when used in occlusal restorations. Likewise, the bulk-fill composites present similar fracture strength in molars with mesio-occlusal-distal restorations.

Microtensile Bond Strength and Interfacial Characterization of 11 Contemporary Adhesives Bonded to Bur-cut Dentin

2010 ◽  
Vol 35 (1) ◽  
pp. 94-104 ◽  
Author(s):  
M. Sarr ◽  
A. W. Kane ◽  
J. Vreven ◽  
A. Mine ◽  
K. L. Van Landuyt ◽  
...  
Keyword(s):  
Bond Strength ◽  
Chemical Bonding ◽  
Gold Standard ◽  
Clinical Relevance ◽  
Clinical Effectiveness ◽  
Microtensile Bond Strength ◽  
One Step ◽  
Self Etch

Clinical Relevance In the current study, contemporary adhesives are assessed mechanically and ultra-morphologically to predict clinical effectiveness. Adhesives with simplified application procedures (in particular, one-step self-etch adhesives) still underperform as compared to conventional “gold-standard” multi-step adhesives. “Mild” two-step self-etch adhesives that provide additional chemical bonding appear to most optimally combine bonding effectiveness with a simplified application protocol.

Incremental Layer Shear Bond Strength of Low-shrinkage Resin Composites Under Different Bonding Conditions

2014 ◽  
Vol 39 (6) ◽  
pp. 603-611 ◽  
Author(s):  
AH Al Musa ◽  
HNA Al Nahedh
Keyword(s):  
Bond Strength ◽  
Shear Bond Strength ◽  
Failure Modes ◽  
Resin Composites ◽  
Adhesive Resin ◽  
Aging Conditions ◽  
Bond Strengths

SUMMARY The purpose of this study was to determine the incremental shear bond strength of a silorane-based composite (Filtek Silorane) repaired with silorane or a methacrylate-based composite (Filtek Z250) under various aging conditions. Also, the incremental bond strength of the silorane-based composite was compared with that of another low-shrinkage methacrylate-based composite (Aelite LS Posterior) under fresh and aged conditions, with and without the use of an adhesive resin between successive layers. The two brands of low-shrinkage composites were compared with a microhybrid, Filtek Z250, which served as the control. Substrate discs were fabricated and second layers were adhered to them immediately, after two weeks of aging, or after four weeks of aging and with and without an adhesive resin. Shear bond strengths were measured and failure modes were evaluated. The incremental bond strength of silorane to the silorane-based composite was not significantly different from that of the methacrylate-based composite. However, repairing a silorane-based composite with a methacrylate-based composite significantly reduced the bond strength. Aelite showed a lower incremental bond strength than Z250 and silorane, but the use of an adhesive significantly improved the bond strength. The absence of an oxygen-inhibited layer did not affect the bond strength of the consecutive layers of the silorane-based composite.

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