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<0.01) or adhesive agent (p<0.01), but not on time (p=0.19), with no significant interactions (p>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.

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 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 Over-Etching and Prolonged Application Time of a Universal Adhesive on Dentin Bond Strength

Polymers ◽  
2020 ◽  
Vol 12 (12) ◽  
pp. 2902
Author(s):  
Phoebe Burrer ◽  
Hoang Dang ◽  
Matej Par ◽  
Thomas Attin ◽  
Tobias T. Tauböck
Keyword(s):  
Phosphoric Acid ◽  
Bond Strength ◽  
Linear Regression Analysis ◽  
Acid Etching ◽  
Control Group ◽  
Application Time ◽  
Universal Adhesive ◽  
Adhesive Application ◽  
Post Hoc ◽  
Phosphoric Acid Etching

This study investigated the effect of over-etching and prolonged application time of a universal adhesive on dentin bond strength. Ninety extracted human molars were ground to dentin and randomly allocated into nine groups (G1–9; n = 10 per group), according to the following acid etching and adhesive application times. In the control group (G1), phosphoric acid etching was performed for 15 s followed by application of the universal adhesive Scotchbond Universal (3M) for 20 s, as per manufacturer’s instructions. In groups G2–5, both the etching and adhesive application times were either halved, doubled, quadrupled, or increased eightfold. In groups G6–9, etching times remained the same as in G2–5 (7.5 s, 30 s, 60 s, and 120 s, respectively), but the adhesive application time was set at 20 s as in the control group (G1). Specimens were then restored with a nanofilled composite material and subjected to microtensile bond strength testing. Bond strength data were statistically analyzed by ANOVA and Tukey’s post-hoc tests (α = 0.05). The relationship of bond strength with etching and adhesive application time was examined using linear regression analysis. Treatment of dentin with halved phosphoric acid etching and adhesive application times (G2) resulted in a significant bond strength decrease compared to the control group (G1) and all other test groups, including the group with halved acid etching, but 20 s of adhesive application time (G6). No significant differences in bond strength were found for groups with multiplied etching times and an adhesive application time of 20 s or more, when compared to the control group (G1). In conclusion, a universal adhesive application time of at least 20 s is recommended when bonding to over-etched dentin.

scholarly journals Effect of a self-etching primer and phosphoric acid etching on the bond strength of 4-META/MMA-TBB resin to human enamel

2015 ◽  
Vol 34 (2) ◽  
pp. 219-226 ◽  
Author(s):  
Hiroshi NOGAWA ◽  
Hiroyasu KOIZUMI ◽  
Osamu SAIKI ◽  
Haruto HIRABA ◽  
Mitsuo NAKAMURA ◽  
...  
Keyword(s):  
Phosphoric Acid ◽  
Bond Strength ◽  
Acid Etching ◽  
Human Enamel ◽  
Phosphoric Acid Etching

scholarly journals Influence of previous acid etching on interface morphology and bond strength of self-etching adhesive to cavosurface enamel

2012 ◽  
Vol 06 (01) ◽  
pp. 056-062 ◽  
Author(s):  
Adriano Fonseca Lima ◽  
Vinícius Brito da Silva ◽  
Giulliana Panfiglio Soares ◽  
Giselle Maria Marchi ◽  
Flávio Henrique Baggio Aguiar ◽  
...  
Keyword(s):  
Phosphoric Acid ◽  
Bond Strength ◽  
Adhesive System ◽  
The Self ◽  
The Other ◽  
Acid Etching ◽  
Control Group ◽  
System Control ◽  
Etch And Rinse ◽  
Group 3

ABSTRACTObjectives: The aim of this study was to evaluate the (1) bond strength of a etch-and-rinse and self-etching adhesive systems to cavosurface enamel, (2) influence of the previous acid etching with phosphoric acid 35% to the self-etching adhesive application on bond strength values, and (3) analysis of the cavosurface enamel morphology submitted to different types of conditioning, with the use of a scanning electronic microscope (SEM).Methods: Twenty four human third molars were sectioned on mesio-distal direction, resulting in two slices. The specimens were ground flat with 600-grit aluminum oxide papers, and were randomly divided into three groups: Group 1 (etch-and-rinse adhesive system (control group)), Group 2 (selfetching adhesive), and Group 3 (self-etching adhesive with previous 35% phosphoric acid-etching for 15 s). Four cylinders (0.75 mm of diameter, 1 mm height) were confectioned prior to the microshear test. Four samples for each group were prepared according the cavosurface enamel treatment and were analyzed in an SEM.Results: Group 3 had the highest values on bond strength to cavosurface enamel compared to the other two groups, which presented statistically similar values. The performance of acid etching before the application of the self-etching adhesive results in an etching pattern that is different than the other groups, favoring the adhesion to the cavosurface enamel.Conclusions: Acid etching increases the bond strength values of the self-etching adhesive to cavosurface enamel, promoting a conditioning pattern that favors the adhesion to this substrate. (Eur J Dent 2012;6:56-62)

Influence of phosphoric acid etching on bond strength of adhesives

2015 ◽  
Vol 31 ◽  
pp. e8
Author(s):  
Y. Tamura ◽  
S. Shibasaki ◽  
S. Matsuyoshi ◽  
K. Tsubota ◽  
T. Takamizawa ◽  
...  
Keyword(s):  
Phosphoric Acid ◽  
Bond Strength ◽  
Acid Etching ◽  
Phosphoric Acid Etching
Sign in / Sign up

Export Citation Format

Share Document