scholarly journals Characterization of an Experimental Two-Step Self-Etch Adhesive’s Bonding Performance and Resin-Dentin Interfacial Properties

Polymers ◽  
2021 ◽  
Vol 13 (7) ◽  
pp. 1009
Author(s):  
Abu Faem Mohammad Almas Chowdhury ◽  
Arefin Alam ◽  
Monica Yamauti ◽  
Pedro Álvarez Lloret ◽  
Pipop Saikaew ◽  
...  
Keyword(s):  
Layer Thickness ◽  
Water Storage ◽  
Adhesive Layer ◽  
Third Molars ◽  
Microtensile Bond Strength ◽  
Universal Adhesive ◽  
Bonding Performance ◽  
Adhesive Thickness ◽  
Self Etch

This study evaluated an experimental two-step self-etch adhesive (BZF-29, BZF) by comparing it with a reference two-step self-etch adhesive (Clearfil Megabond 2, MB) and a universal adhesive (G-Premio Bond, GP) for microtensile bond strength (μTBS) and resin-dentin interfacial characteristics. Twenty-four human third molars were used for the μTBS test. Bonded peripheral dentin slices were separated to observe the resin-dentin interface and measure the adhesive layer thickness with SEM. μTBS data of the central beams were obtained after 24 h and 6 months of water storage. Fracture modes were determined using a stereomicroscope and SEM. Nine additional third molars were used to determine the elastic modulus (E) employing an ultra microhardness tester. Water storage did not affect μTBS of the tested adhesives (p > 0.05). μTBS of BZF and MB were similar but significantly higher than GP (p < 0.05). BZF achieved the highest adhesive layer thickness, while GP the lowest. E of BZF and MB were comparable but significantly lower than GP (p < 0.05). Except for GP, the predominant fracture mode was nonadhesive. The superior bonding performance of BZF and MB could be attributed to their better mechanical property and increased adhesive thickness imparting better stress relief at the interface.

scholarly journals Microtensile bond strength of a universal adhesive to deep dentin

2016 ◽  
Vol 19 (2) ◽  
pp. 104
Author(s):  
Cristina Gre ◽  
MAuro Amaral Caldeira de Andrada ◽  
Sylvio Monteiro Junior
Keyword(s):  
Bond Strength ◽  
Water Storage ◽  
Adhesive System ◽  
Single Bond ◽  
Third Molars ◽  
Microtensile Bond Strength ◽  
Universal Adhesive ◽  
The Mean ◽  
Self Etch ◽  
One Way Anova

<p><strong>Objective</strong>: This study evaluated the microtensile bond strength of a universal adhesive system applied to deep dentin under different bonding strategies. <strong>Material</strong> <strong>and Methods</strong>: Fifteen human third molars had the coronal portion removed exposing deep dentin and were assigned into 3 groups according to the adhesive system: G1(control): 2-steps totaletch (Adper Single Bond 2, 3M ESPE); G2: 1-step self-etch universal adhesive (Scotchbond Universal, 3M ESPE); G3:2 steps total-etch universal adhesive (Scotchbond Universal, 3M ESPE). Composite buildups were performed on the dentin surfaces and after water storage for 24 h, teeth were sectioned to obtain 40 bonded beams per group with sectional area of 0.9 mm2 . The specimens were submitted to the microtensile bond strength (µTBS) test until failure. Statistical analyses were computed using one-way ANOVA (p = 0.05). <strong>Results</strong>: The mean µTBS (in MPa) were G1 = 22.27, G2 = 22.85 and G3 = 20.3. After statistical analysis, no significant differences were observed among the groups. <strong>Conclusions</strong>: Universal adhesive system performed similarly to the total-etch adhesive and was not affected by the adhesion strategy.</p><p> </p><p><strong>KEYWORDS </strong></p><p>Microtensile; Adhesive system; Dentin.</p>

Effect of Different Protocols in Preconditioning With EDTA in Sclerotic Dentin and Enamel Before Universal Adhesives Applied in Self-etch Mode

2017 ◽  
Vol 42 (3) ◽  
pp. 284-296 ◽  
Author(s):  
EC Martini ◽  
SO Parreiras ◽  
MF Gutierrez ◽  
AD Loguercio ◽  
A Reis
Keyword(s):  
Bond Strength ◽  
Adhesive Systems ◽  
Microtensile Bond Strength ◽  
Universal Adhesive ◽  
Etching Pattern ◽  
Bonding Performance ◽  
Universal Adhesives ◽  
Microshear Bond Strength ◽  
Self Etch ◽  
Main Factor

SUMMARY Objectives: The aim of this study was to investigate the effect of different protocols of 17% ethylene diamine tetra-acetic acid (EDTA) conditioning on the etching pattern and immediate bond strength of universal adhesives to enamel and sclerotic dentin. Methods and Materials: Forty bovine teeth with sclerotic dentin and 20 human third molars were randomly divided into eight groups resulting from the combination of the main factors surface treatment (none, two-minute EDTA conditioning manual application, 30-second EDTA manual application, 30-second EDTA sonic application) and adhesives systems (Scotchbond Universal Adhesive [SBU] and Prime & Bond Elect [PBE]). Resin-dentin and enamel-dentin bond specimens were prepared and tested under the microtensile bond strength (μTBS) and microshear bond strength (μSBS) tests, respectively. The etching pattern produced on the unground enamel and the sclerotic dentin surfaces under the different protocols and adhesive systems was evaluated under scanning electron microscopy. Results: For enamel, only the main factor adhesive was significant (p&lt;0.0001), with SBU showing the highest μSBS. In sclerotic dentin, the lowest mean was observed for the group without EDTA application and the highest mean in the group with EDTA application with the sonic device for 30 seconds. Regardless of the EDTA protocol, the highest means of μTBS were observed for SBU (p&lt;0.05). Conclusions: EDTA conditioning improves the bonding performance of universal adhesives in the self-etch mode on sclerotic dentin, mainly when applied for 30 seconds with the aid of a sonic device. EDTA pretreatment also improves the retentive etching pattern of enamel, but it does not result in higher enamel bond strength.

scholarly journals Does Adhesive Layer Thickness and Tag Length Influence Short/Long-Term Bond Strength of Universal Adhesive Systems? An In-Vitro Study

2021 ◽  
Vol 11 (6) ◽  
pp. 2635
Author(s):  
Naji Kharouf ◽  
Tarek Ashi ◽  
Ammar Eid ◽  
Levi Maguina ◽  
Jihed Zghal ◽  
...  
Keyword(s):  
Bond Strength ◽  
Layer Thickness ◽  
Storage Period ◽  
Adhesive Layer ◽  
Adhesive Systems ◽  
Universal Adhesive ◽  
Universal Adhesives ◽  
Self Etch ◽  
Over Time

(1) Background: This study investigated the effect of the adhesive layer thickness and the length of resin tags on dentin bond strength of five universal adhesives applied in self-etch mode. (2) Methods: One hundred and fifty extracted human third molars were used. Five different universal adhesives were applied in self-etch mode on the dentin surface. Half of the specimens were subjected to an aging procedure for six months. A shear bond strength (SBS) test was performed and the results were statistically analyzed with a t-test and one-way ANOVA test. Scanning electron microscopy (SEM) was executed to measure the adhesive layer thickness and tag depth. (3) Results: No statistical differences were found between the five adhesive systems after a 24 h storage period, regardless of layer thickness and tag depth (p < 0.05). After 6 months of aging in water at 37 °C, Iperbond Max and Scotchbond Universal preserved the bond strength over time (p < 0.05), whilst the SBS of Iperbond Ultra, FuturaBond M+, and Ibond Universal decreased significantly after the aging period. No relation was observed between the adhesive thickness or tags’ length on SBS. (4) Conclusions: Within the limitation of this study, the stability over time of the bond strength of universal adhesives depends on their compositions regardless of the adhesive layer thickness and/or tags’ length.

scholarly journals Impact of Immediate Dentin Sealing Using Universal Adhesive under Simulated Pulp Pressure on Microtensile Bond Strength of Indirect Resin Composite Restorations and Dentin Permeability

2021 ◽  
Author(s):  
Emad Abd Elfatah Abo-Alazm ◽  
Rehab Khalil Safy
Keyword(s):  
Bond Strength ◽  
Resin Composite ◽  
Water Storage ◽  
Microtensile Bond Strength ◽  
Universal Adhesive ◽  
Dentin Permeability ◽  
Composite Restorations ◽  
Significant Difference ◽  
Cad Cam ◽  
Self Etch

Abstract Objective The aim of this study was to investigate the effect of immediate dentin sealing (IDS) technique using universal adhesive under simulated pulp pressure on microtensile bond strength (µTBS) of indirect resin composite restorations and dentin permeability. Materials and Methods Fifty extracted caries-free human third molars were used for specimens' preparation. Each molar's occlusal table was abraded flat and their roots were separated under continuous water cooling. Forty specimens were used for microtensile bond strength test (µTBST) evaluation. The µTBST specimens were randomly assigned to two groups according to the dentin sealing time; Immediate dentin sealing (IDS) and delayed dentin sealing (DDS). Each group was further subdivided into two subgroups according to the adhesive system used for dentin sealing: iBOND self-etch adhesive and GLUMA Bond Universal. All specimens were exposed to simulated pulp pressure for 1 week then restored using computer-aided design/computer-aided manufacturing (CAD/CAM) resin composite blocks. The µTBS was evaluated for all tested subgroups after 24 hours and 6 months of water storage. The remaining 10 teeth were used for the preparation of dentin discs for dentin permeability evaluation. They were divided into two groups according to type of self-etch adhesive used. Fluid filtration rate was evaluated after etching, with smear layer and after adhesive application. Results obtained were statistically analyzed using Shapiro–Wilk test and Weibull analysis. Results Statistically significant difference was recorded between μTBS mean values of both IDS and DDS techniques at 24 hours and after 6 months of water storage. GLUMA Bond Universal adhesive had significantly higher bond strength compared with iBond at both IDS and DDS techniques, but both adhesives showed a significant reduction in the Weibull characteristic strength after 6 months of water storage. Significant reduction in dentin permeability was recorded by both adhesives without any significant difference between them. Conclusions The IDS technique using universal adhesive in self-etch mode is an effective strategy for improving the final bond strength of CAD/CAM resin composite restorations and reducing dentin permeability.

scholarly journals Effect of Different Application Techniques of Universal Bonding System on Microtensile Bond Strength of Bulk-Fill Composites to Primary and Permanent Dentin

2020 ◽  
Author(s):  
Masoud Fallahinejad Ghajari ◽  
Mahsa Sheikholeslamian ◽  
Amir Ghasemi ◽  
Leila Simaei
Keyword(s):  
Bond Strength ◽  
Failure Modes ◽  
In Vitro Study ◽  
Permanent Teeth ◽  
Microtensile Bond Strength ◽  
Universal Adhesive ◽  
Bonding System ◽  
The Mean ◽  
Self Etch

Objectives: This study aimed to determine the microtensile bond strength (μTBS) of a bulk-fill composite to permanent and primary coronal dentin using a universal adhesive in self-etch and total-etch modes. Materials and Methods: This in-vitro study was performed on 52 occlusal dentinal surfaces of human primary and permanent teeth. The crowns were cut to the gingival level. The 48 prepared dentin sections were randomly assigned to the following groups (n=13): A: Primary/Total-etch, B: Primary/Self-etch, C: Permanent/Total-etch, and D: Permanent/Self-etch. In groups A and C, after etching for 15 seconds, two layers of a universal bonding (Futurabond U) were applied and cured for 10 seconds. All samples were filled with a bulk-fill composite (x-trafil; VOCO) and cured for 40 seconds. The samples were cut to a bar-shaped dentin block with the dimensions of 1×1×1 mm3, and after 10,000 thermocycles, the μTBS test was accomplished at a crosshead speed of 1 mm/minute. The mean and standard deviation (SD) of μTBS were calculated, and the data were analyzed using two-way analysis of variance (ANOVA) and Fisher's exact test. Results: The mean μTBS was as follows: A: 15.03±2.0279, B: 11.11±2.4423, C: 23.50±4.8165, and D: 16.26±6.3200 MPa. Futurabond U showed a higher μTBS in the total-etch mode (P<0.001). The permanent teeth had greater μTBS than the primary teeth (P<0.001). Similar percentages of failure modes were observed in the total-etch groups but in the self-etch groups, most failures were in the form of adhesive and mixed. Conclusion: Greater μTBS was observed in the permanent teeth with the total-etch technique.

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.

In Vitro Longevity of Bonding Properties of Universal Adhesives to Dentin

2015 ◽  
Vol 40 (3) ◽  
pp. 282-292 ◽  
Author(s):  
MA Muñoz ◽  
I Luque-Martinez ◽  
P Malaquias ◽  
V Hass ◽  
A Reis ◽  
...  
Keyword(s):  
Repeated Measures ◽  
Water Storage ◽  
Storage Period ◽  
Dihydrogen Phosphate ◽  
Scanning Electron Microscopy Data ◽  
Universal Adhesive ◽  
Etch And Rinse ◽  
Universal Adhesives ◽  
Self Etch

SUMMARY Purpose To evaluate the immediate and 6-month resin-dentin bond strength (μTBS) and nanoleakage (NL) of universal adhesives that contain or do not contain methacryloyloxydecyl dihydrogen phosphate (MDP) and are used in the etch-and-rinse and self-etch strategies. Methods and Materials Forty caries-free extracted third molars were divided into eight groups for μTBS (n=5). The groups were bonded with the Clearfil SE Bond (CSE) and Adper Single Bond 2 (SB) as controls; Peak Universal, self-etch (PkSe) and etch-and rinse (PkEr); Scotchbond Universal Adhesive, self-etch (ScSe) and etch-and-rinse (ScEr); and All Bond Universal, self-etch (AlSe) and etch-and-rinse (AlEr). After composite restorations, specimens were longitudinally sectioned to obtain resin-dentin bonded sticks (0.8 mm2). The μTBS of the specimens was tested immediately (IM) or after 6 months of water storage (6M) at 0.5 mm/min. Some sticks at each storage period were immersed in silver nitrate and photo developed, and the NL was evaluated with scanning electron microscopy. Data were analyzed with two-way repeated-measures analysis of variance and Tukey test (α=0.05). Results At the IM period, PkSe and PkEr showed μTBS similar to the control adhesives (p&gt;0.05) but increased NL pattern and lower μTBS after 6M (p&lt;0.05). ScSe and ScEr showed intermediary μTBS values at the IM period but remained stable after 6 months (p&gt;0.05). AlSe showed the lowest μTBS (p&lt;0.05), but μTBS and NL remained stable after 6M (p&gt;0.05). AlEr showed higher IM μTBS but showed higher degradation after 6M (p&lt;0.05). Conclusions Universal adhesives that contain MDP showed higher and more stable μTBS with reduced NL at the interfaces after 6 months of water storage.

scholarly journals Effect of Mode of Application on the Microtensile Bond Strength of a Self-etch and Etch-and-Rinse Adhesive System

2010 ◽  
Vol 35 (4) ◽  
pp. 428-435 ◽  
Author(s):  
A. Reis ◽  
C. Zander-Grande ◽  
S. Kossatz ◽  
R. Stanislawczuk ◽  
A. Manso ◽  
...  
Keyword(s):  
Bond Strength ◽  
Clinical Relevance ◽  
Water Storage ◽  
Adhesive System ◽  
Microtensile Bond Strength ◽  
Mode Of Application ◽  
Etch And Rinse ◽  
Self Etch

Clinical Relevance All Bond 3 and All Bond Self-Etch are versatile systems, capable of being used either in the full or simplified version. Both showed adequate microtensile bond strength results in enamel and dentin after 24 hours of water storage.

Does Bonding Approach Influence the Bond Strength of Universal Adhesive to Dentin of Primary Teeth?

2017 ◽  
Vol 41 (3) ◽  
pp. 214-218 ◽  
Author(s):  
Tathiane Larissa Lenzi ◽  
Fabio Zovico Maxnuck Soares ◽  
Rachel de Oliveira Rocha
Keyword(s):  
Bond Strength ◽  
Adhesive System ◽  
Primary Tooth ◽  
Adhesive Systems ◽  
Microtensile Bond Strength ◽  
Universal Adhesive ◽  
Etch And Rinse ◽  
Tooth Dentin ◽  
Self Etch ◽  
One Way Anova

Objective: To evaluate the effect of bonding strategy on microtensile bond strength (μTBS) of a new universal adhesive system to primary tooth dentin. Study design: Flat dentin surfaces from 25 primary molars were assigned to 5 groups according to the adhesive and bonding approach: Adper Single Bond 2 (two-step etch-and-rinse adhesive) and Clearfil SE Bond (two-step self-etch system), as controls; Scotchbond Universal Adhesive–self-etch, dry or wet-bonding etch-and-rinse strategies. Composite buildups were constructed and the teeth were sectioned to obtain bonded sticks (0.8 mm2) to be tested under tension at 1mm/min. The μTBS means were analyzed by one-way ANOVA and Tukey's tests (α = 0.05). Failure mode was evaluated using a stereomicroscope (400×). Results: Universal adhesive applied following both dry and wet-bonding etch-and-rinse strategies showed similar bond strength compared with control adhesive systems. Self-etch approach resulted in the lowest μTBS values. For all groups, adhesive/mixed failure prevailed. The percentage of premature debonded specimens was higher when the universal adhesive was used as self-etch mode. Conclusion: The universal adhesive does not share the same versatility of being used in the etch-and-rinse and self-etch approaches; however, the use of the new adhesive following either wet or dry-bonding may be a suitable option as alternative to two-step etch-and-rinse adhesive protocol.

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