scholarly journals Long‐term microtensile bond strength of self‐etch adhesives and influence of 7 s phosphoric acid etching on adhesion of a 3‐step etch‐and‐rinse adhesive to dentine of primary teeth

2021 ◽  
Author(s):  
Stefanie Amend ◽  
Roland Frankenberger ◽  
Tobias Oschmann ◽  
Susanne Lücker ◽  
Julia Winter ◽  
...  
Keyword(s):  
Phosphoric Acid ◽  
Bond Strength ◽  
Primary Teeth ◽  
Acid Etching ◽  
Microtensile Bond Strength ◽  
Etch And Rinse ◽  
Self Etch ◽  
Phosphoric Acid Etching

Shear Bond Strength of Self-etch Adhesives to Enamel with Additional Phosphoric Acid Etching

10.2341/07-63 ◽  
2008 ◽  
Vol 33 (2) ◽  
pp. 155-162 ◽  
Author(s):  
A-K. Lührs ◽  
S. Guhr ◽  
R. Schilke ◽  
L. Borchers ◽  
W. Geurtsen ◽  
...  
Keyword(s):  
Composite Materials ◽  
Phosphoric Acid ◽  
Bond Strength ◽  
Clinical Relevance ◽  
Shear Bond Strength ◽  
Acid Etching ◽  
Etch And Rinse ◽  
Bond Strengths ◽  
Self Etch ◽  
Phosphoric Acid Etching

Clinical Relevance When using self-etch adhesives to bond composite materials to enamel, there is concern about the ability to achieve bond strengths comparable to approved etch-and-rinse systems. An additional phosphoric acid etching can improve the shear bond strength of self-etch adhesives to enamel.

scholarly journals Microtensile Bond Strength of Composite to Enamel Using Universal Adhesive with/without Acid Etching Compared To Etch and Rinse and Self-Etch Bonding Agents

2018 ◽  
Vol 6 (11) ◽  
pp. 2186-2192 ◽  
Author(s):  
Hoda Pouyanfar ◽  
Elaheh Seyed Tabaii ◽  
Samaneh Aghazadeh ◽  
Seyyed Pedram Tabatabaei Navaei Nobari ◽  
Mohammad Moslem Imani
Keyword(s):  
Phosphoric Acid ◽  
Bond Strength ◽  
Testing Machine ◽  
Acid Etching ◽  
Microtensile Bond Strength ◽  
Universal Adhesive ◽  
Bonding Agents ◽  
Modes Of Failure ◽  
Etch And Rinse ◽  
Self Etch

AIM: Considering the recent introduction of universal adhesives and the controversy regarding the use/no use of etchant prior to their application, this study sought to assess the microtensile bond strength of composite to enamel using universal adhesive with/without acid etching compared to three-step etch and rinse, two-step etch and rinse and two-step self-etch bonding agents. METHODS: This in vitro, an experimental study was conducted on 80 extracted sound human molars in five groups (16 each): Scotchbond Universal adhesive (3M) with/without prior etching, Adper Scthe otchbond Multi-Purpose, Single Bond and Clearfil SE Bond. Etching was performed with 37% phosphoric acid for 20 seconds followed by rinsing and drying. The bonding agent was then applied and light-cured. The e-lite composite was bonded to surfaces and light-cured. The teeth were then mounted, sectioned and subjected to microtensile bond strength test in a universal testing machine. The mode of failure was, determined under a stereomicroscope. Data were analysed using one-way ANOVA followed by Tukey’s test. RESULTS: Universal adhesive with prior etching yielded the highest bond strength (P = 0.03). Pairwise comparisons showed that the bond strength of this group was significantly higher than that of universal adhesive without prior etching (P = 0.04). No other significant differences were noted (P > 0.05). The modes of failure were significantly different among the groups (P = 0.003). CONCLUSION: Enamel etching with phosphoric acid can significantly increase the bond strength to universal adhesive. Universal adhesive without prior etching provided the bond strength as high as that provided by etching and rinse and self-etch bonding agents.

scholarly journals Influence of chlorhexidine on longitudinal bond strength to dentin: in vitro study

2017 ◽  
Vol 20 (1) ◽  
pp. 17 ◽  
Author(s):  
Beatriz Maria Fonseca ◽  
Daphne Camara Barcellos ◽  
César Rogério Pucci ◽  
Eduardo Bresciani ◽  
Maria Amélia Máximo de Araújo
Keyword(s):  
Phosphoric Acid ◽  
Bond Strength ◽  
Water Storage ◽  
In Vitro Study ◽  
Chlorhexidine Gluconate ◽  
Acid Etching ◽  
Single Bond ◽  
Etch And Rinse

<p><strong>Objective</strong>: This study evaluated the effect of 0.2% chlorhexidine gluconate solution used as an therapeutic primer on the long-term bond strength of etch-and-rinse adhesive to dentin. <strong>Material</strong> <strong>and</strong> <strong>Methods</strong>: Bovine incisors were worn to expose an area of dentin and were divided into 2 groups: Group C (Control) - acid etching with 37% phosphoric acid + Single Bond; Group CHX (0.2% CHX) - acid etching with 37% phosphoric acid + 0.2% CHX for 30 s + Single Bond. Blocks of composite were fabricated and stored for 24 h or 6 months, sectioned into beams and submitted to microtensile tests. Results were analyzed by two-way ANOVA and Tukey tests. <strong>Results</strong>: Mean (±SD) values (in MPa) were as follow: Group CHX/24h - 41.8(±2.62)A; Group C/24h - 40.8(±3.35)AB; Group CHX/6 months – 36.4(±3.52)B; Group CHX/6 months - 26.1(±1.54)C. <strong>Conclusion</strong>: CHX improve the imediatte bond strength of resin-dentin and significantly lowered the loss of bond strength after 6 months water storage as seen in the control bonds.</p><p><strong>Keywords</strong></p><p>Tensile bond strength; Dentin; Total-etch adhesives; Chlorhexidine gluconate.</p>

Repair Surface Conditioning Measures Affect Enamel and Dentin Bond Strength

2020 ◽  
Vol 45 (6) ◽  
pp. 643-654
Author(s):  
P Kanzow ◽  
L Piecha ◽  
J Biermann ◽  
A Wiegand
Keyword(s):  
Phosphoric Acid ◽  
Bond Strength ◽  
Hydrofluoric Acid ◽  
Silica Coating ◽  
Acid Etching ◽  
Universal Adhesive ◽  
Universal Primer ◽  
Surface Conditioning ◽  
Etch And Rinse ◽  
Phosphoric Acid Etching

Clinical Relevance Contamination of enamel and dentin with repair surface conditioning measures should be avoided. SUMMARY Objectives: To analyze whether the contamination with different repair conditioning measures impairs the adhesive performance of a universal adhesive applied in etch-and-rinse mode (ER) or self-etch mode (SE). Methods and Materials: Bovine enamel and dentin surfaces (each subgroup n=16) were bonded with a universal adhesive in ER or SE after contamination with different repair conditioning measures (sandblasting, silica coating, hydrofluoric acid etching, self-etching ceramic primer). In half of the groups, sand-blasting, silica coating, and hydrofluoric acid etching was followed by the use of a universal primer. If the universal adhesive was applied in ER, contamination was performed either before or after phosphoric acid etching. If the universal adhesive was applied in SE, bonding was performed after contamination. In the control groups, no contamination was simulated. Shear bond strength (SBS) and failure modes of composite buildups were determined after thermal cycling (10,000 cycles, 5°C-55°C). Statistical analysis was performed using analyses of variance, Weibull statistics, and χ2 tests (p&lt;0.05). Results: In ER, sandblasting and silica coating significantly reduced SBS (control: enamel =25.7±4.2 MPa; dentin = 22.0±5.3 MPa) only when performed after phosphoric acid etching. Contamination with hydrofluoric acid impaired SBS on enamel but not on dentin. The self-etching ceramic primer reduced SBS, but not significantly. The contamination with the universal primer had no significant effect. In SE, all repair conditioning measures except the universal primer reduced SBS (control: enamel = 20.3±5.5 MPa; dentin = 23.0±4.0 MPa). Conclusion: Contamination of enamel and dentin by repair conditioning measures potentially affects bond strength.

scholarly journals Effect of Selective Etch on the Bond Strength of Composite to Enamel Using a Silorane Adhesive

2015 ◽  
Vol 40 (6) ◽  
pp. E242-E249 ◽  
Author(s):  
L Bermudez ◽  
M Wajdowicz ◽  
D Ashcraft-Olmscheid ◽  
K Vandewalle
Keyword(s):  
Phosphoric Acid ◽  
Bond Strength ◽  
Surface Treatment ◽  
The Self ◽  
Acid Etching ◽  
Bonding Agents ◽  
Diamond Saw ◽  
Bovine Enamel ◽  
Self Etch ◽  
Phosphoric Acid Etching

SUMMARY An improvement in bond strength to enamel has been demonstrated with the use of phosphoric acid prior to bonding with self-etch methacrylate-based adhesive agents. No research has evaluated the effect of phosphoric-acid etching of enamel with a newer self-etch silorane adhesive. The purpose of this study was to evaluate the shear-bond strength of composite to enamel using the self-etch silorane adhesive compared to other self-etching methacrylate-based adhesives, with or without a separate application of phosphoric acid. Bovine incisors were sectioned using a diamond saw and mounted in plastic pipe. The bonding agents were applied to flattened enamel surfaces with or without the application of 35% phosphoric acid. The bonded tooth specimens were inserted beneath a mold, and composite was placed incrementally and light cured. The specimens were stored for 24 hours and six months in water and tested in shear. Data were analyzed with a three-way analysis of variance (ANOVA) to evaluate the effects of surface treatment, adhesive agent, or time on the bond strength of composite to bovine enamel (α=0.05). Significant differences were found between the groups based on surface treatment (p&lt;0.01) or adhesive agent (p&lt;0.01), but not on time (p=0.19), with no significant interactions (p&gt;0.14). Phosphoric-acid etching of bovine enamel significantly increased the bond strength of the self-etch methacrylate and the silorane adhesives. The methacrylate-based adhesives had significantly greater bond strength to enamel than the silorane adhesive.

scholarly journals Effect of adhesive mode and chlorhexidine on microtensile strength of universal bonding agent to sound and caries-affected dentins

2018 ◽  
Vol 12 (04) ◽  
pp. 553-558 ◽  
Author(s):  
Joyce Figueiredo Macedo de Lima ◽  
Danielle Wajngarten ◽  
Fariya Islam ◽  
Johanna Clifford ◽  
Ana Carolina Botta
Keyword(s):  
Phosphoric Acid ◽  
Bond Strength ◽  
Composite Resin ◽  
High Viscosity ◽  
Bonding Agent ◽  
Third Molars ◽  
Microtensile Bond Strength ◽  
Etch And Rinse ◽  
Significant Difference ◽  
Self Etch

ABSTRACT Objective: The main objective of this study is to assess the effect of the adhesive mode and chlorhexidine (CHX) on the microtensile strength of a universal bonding agent to sound and caries-affected dentins. Materials and Methods: Six intact third molars and six decayed third molars were sectioned to obtain two middle dentin specimens per tooth. Prime and Bond Elect Universal (Dentsply) was applied to specimens in two different modes: Etch-and-rinse (ER, phosphoric acid for 15s) and self-etch (SE, no phosphoric acid). 2% CHX (Cavity Cleanser, Bisco) was applied to both dentins for 30 s. Specimens were randomly assigned into eight groups (n = 3) according to the treatments applied to sound and caries-affected dentins: SE; ER; SE + CHX; and ER + CHX. All specimens were restored with TPH Spectra High Viscosity (Dentsply) composite resin and sectioned to obtain specimens of 0.8 ± 0.1 mm2. The microtensile bond strength test was conducted at 1 mm/min. The data were statistically analyzed by ANOVA and multiple comparisons' test (α = 0.05). Results: There was no significant difference between sound dentin and caries-affected dentin (P = 0.132). The highest bond strength was obtained with the application of the ER (31.81MPa). SE + CHX promoted the lowest bond strength with no statistical difference to ER + CHX (P > 0.05). Conclusions: ER mode for the universal bonding agent yielded the highest bond strength to sound and caries-affected dentins. CHX reduced the bond strength to both dentins regardless the application of phosphoric acid. Clinical Significance: The universal bonding agent increased the bond strength to sound and caries-affected dentins when applied by the ER mode.

Effect of Chlorhexidine Application on Microtensile Bond Strength to Dentin

10.2341/07-69 ◽  
2008 ◽  
Vol 33 (2) ◽  
pp. 183-188 ◽  
Author(s):  
C. J. Soares ◽  
C. A. Pereira ◽  
J. C. Pereira ◽  
F. R. Santana ◽  
C. J. Prado
Keyword(s):  
Adverse Effect ◽  
Phosphoric Acid ◽  
Bond Strength ◽  
Clinical Relevance ◽  
Acid Etching ◽  
Microtensile Bond Strength ◽  
Phosphoric Acid Etching ◽  
Chlorhexidine Solution

Clinical Relevance Based on the results of this study, the application of chlorhexidine solution at a concentration of 0.12 and 2% before, after or associated with phosphoric acid etching, presented similar behavior with no adverse effect on 24-hour bond strength.

scholarly journals Four chemical methods of porcelain conditioning and their influence over bond strength and surface integrity

2015 ◽  
Vol 20 (4) ◽  
pp. 51-56 ◽  
Author(s):  
João Paulo Fragomeni Stella ◽  
Andrea Becker Oliveira ◽  
Lincoln Issamu Nojima ◽  
Mariana Marquezan
Keyword(s):  
Phosphoric Acid ◽  
Bond Strength ◽  
Surface Integrity ◽  
Hydrofluoric Acid ◽  
Shear Bond Strength ◽  
Testing Machine ◽  
Acid Etching ◽  
Ceramic Surface ◽  
Surface Conditioning ◽  
Phosphoric Acid Etching

OBJECTIVE: To assess four different chemical surface conditioning methods for ceramic material before bracket bonding, and their impact on shear bond strength and surface integrity at debonding.METHODS: Four experimental groups (n = 13) were set up according to the ceramic conditioning method: G1 = 37% phosphoric acid etching followed by silane application; G2 = 37% liquid phosphoric acid etching, no rinsing, followed by silane application; G3 = 10% hydrofluoric acid etching alone; and G4 = 10% hydrofluoric acid etching followed by silane application. After surface conditioning, metal brackets were bonded to porcelain by means of the Transbond XP system (3M Unitek). Samples were submitted to shear bond strength tests in a universal testing machine and the surfaces were later assessed with a microscope under 8 X magnification. ANOVA/Tukey tests were performed to establish the difference between groups (α= 5%).RESULTS: The highest shear bond strength values were found in groups G3 and G4 (22.01 ± 2.15 MPa and 22.83 ± 3.32 Mpa, respectively), followed by G1 (16.42 ± 3.61 MPa) and G2 (9.29 ± 1.95 MPa). As regards surface evaluation after bracket debonding, the use of liquid phosphoric acid followed by silane application (G2) produced the least damage to porcelain. When hydrofluoric acid and silane were applied, the risk of ceramic fracture increased.CONCLUSIONS: Acceptable levels of bond strength for clinical use were reached by all methods tested; however, liquid phosphoric acid etching followed by silane application (G2) resulted in the least damage to the ceramic surface.

scholarly journals Effect of Tannic Acid on Bond Strength of Etch and Rinse and Self-etch Adhesive Systems in Dentin of Primary Teeth

2017 ◽  
Vol 18 (1) ◽  
pp. 34-38
Author(s):  
Mojtaba Abdollahi ◽  
Masoumeh Ebrahimi ◽  
Alireza Sarraf Shirazi ◽  
Faraneh Abdolhoseinpour
Keyword(s):  
Bond Strength ◽  
Tannic Acid ◽  
Primary Teeth ◽  
Testing Machine ◽  
T Test ◽  
Adhesive Systems ◽  
Primary Molar ◽  
Etch And Rinse ◽  
Self Etch

ABSTRACT Introduction One of the possible mechanisms for the gradual destruction of bond strength in dentin-resin interface, could be due to the demineralized unstable collagen matrix. Use of protease inhibitors, such as tannic acid (TA) could prevent destruction of collagen fibers. The aim of this study was to compare the TA effect on bond strength of etch and rinse and self-etch adhesive systems in the dentin of primary teeth. Materials and methods This in vitro study was done on 40 extracted primary molar teeth. The teeth were sectioned in the mesiodistal direction, and enamel of buccal and lingual surfaces was removed. Samples were randomly divided into four groups: Single bond (SB) + TA, SB, Clearfil SE Bond (CSB) + TA, and CSB. Then, Z250 and Clearfil AP-X composites were cured on the surfaces of SB and CSB groups respectively. After that, all samples were divided into aging and non-aging groups. For 3 months, samples were placed under 1,000 thermal cycles in aging group. Subsequently, the shear bond strengths of all groups were measured by the International testing machine, and failure mode was evaluated by an optical stereomicroscope. Data were analyzed with paired t-test and independent t-test. Results Tannic acid induced a significant reduction in the immediate bond strength of adhesive SB. Meanwhile, TA had no significant effect on shear bond strength of the CSB system. Conclusion Based on our findings, use of TA is not recommended with SB and CSB adhesives on primary teeth. Clinical significance Tannic acid may not be considered in resin restorations of primary teeth. How to cite this article Ebrahimi M, Sarraf Shirazi A, Abdolhoseinpour F, Abdollahi M. Effect of Tannic Acid on Bond Strength of Etch and Rinse and Self-etch Adhesive Systems in Dentin of Primary Teeth. J Contemp Dent Pract 2017;18(1):34-38.

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