The impact of etching time and material on bond strength of self-adhesive resin cement to eroded enamel

Saker, Samah; Özcan, Mutlu; Al-Zordk, Walid

doi:10.4012/dmj.2018-126

Cited by 11 publications

(11 citation statements)

References 34 publications

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“…The erosive challenge was based on that proposed by Saker et al . [ 23 ] An erosive lesion was produced by subjecting the enamel specimens to a short-term acidic exposure with hydrochloric acid (HCl) solution (0.01 M, pH 2.3) for 30 s, with an agitation speed of 50 rpm at an environmental temperature of 25°C. [ 23 24 ] Surface hardness was assessed again to verify the formation of the lesion (mean surface hardness of 180 ± 22.3 VHN).…”

Section: Methodsmentioning

confidence: 99%

“…[ 23 ] An erosive lesion was produced by subjecting the enamel specimens to a short-term acidic exposure with hydrochloric acid (HCl) solution (0.01 M, pH 2.3) for 30 s, with an agitation speed of 50 rpm at an environmental temperature of 25°C. [ 23 24 ] Surface hardness was assessed again to verify the formation of the lesion (mean surface hardness of 180 ± 22.3 VHN). Following the erosive lesion exposure, each specimen was washed in distilled water for approximately 30 s and immersed in 20 mL of artificial saliva for 30 min.…”

Section: Methodsmentioning

confidence: 99%

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Impact of fluoride-releasing orthodontic adhesives on the shear bond strength of orthodontic brackets to eroded enamel following different surface treatment protocols

Althagafi¹

2022

J Orthodont Sci

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PURPOSE: To assess the impact of enamel surface treatment protocols and the types of adhesive materials on the shear bond strength (SBS) of brackets to eroded enamel substrate. MATERIALS AND METHODS: Eighty extracted premolars were randomly assigned to four main groups in which group C (no treatment) was the control group. The remaining groups were exposed to an erosion challenge through short-term acidic exposure to HCl solution (0.01 M, pH 2.3) for 30 s, with an agitation speed of 50 rpm at an environmental temperature of 25°C. The eroded enamel surface within each group was treated as follows: group N received no treatment; in group P, the eroded enamel was treated with 35% phosphoric acid (Ultradent Products, South Jordan, UT, USA) for 15 s, followed by a rinse for 10 s; and in group F, the eroded enamel was treated with fluoride gel (Bifluorid 12; Voco-GmbH, Cuxhaven, Germany) for 4 min. The brackets were bonded with either a resin composite adhesive (Transbond XT; light-cure adhesive, 3M Unitek, CA, USA) or resin-modified glass ionomer cement (Fuji Ortho LC-GC Corporation, Japan). The specimens were tested for SBS, and the bond failure was assessed according to the adhesive remnant index (ARI). Analysis of variance (ANOVA) and Tukey's post-hoc tests ( P < 0.05) were used to compare the SBS of the groups. The ARI values between the groups were recorded. RESULTS: Statistically significant differences were found among the tested variables ( P < 0.05). Group P showed the highest mean SBS values regardless of the type of adhesive used, and the difference was statistically significant ( P < 0.05). The application of the fluoride gel showed no statistically significant improvement in SBS values. The failure mode distribution among the test groups indicated that failures at the adhesive–bracket interface were predominant in group C compared with the other study groups. CONCLUSIONS: Fluoride pretreatment, which was used to remineralize the eroded enamel surfaces before bonding, resulted in a decrease in the SBS of the orthodontic brackets in vitro compared with the other treated groups. The use of fluoride-releasing adhesive also enhances bonding to the eroded enamel surfaces.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Impact of fluoride-releasing orthodontic adhesives on the shear bond strength of orthodontic brackets to eroded enamel following different surface treatment protocols

Althagafi¹

2022

J Orthodont Sci

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“…Acid etching and the development of acidic functional monomers facilitate the strong bonding of resin cement to teeth; combined with its advantages of good edge sealing and color matching, it has become the preferred material for bonding all-ceramic restorations. 1 Enamel bonding provides almost all of the required retention forces for ceramic restorations involving missing or lacking retention, especially in ceramic veneers, because minimal preparation, limited to the enamel, is always the aim during ceramic veneer preparation.…”

Section: Introductionmentioning

confidence: 99%

Glycerol Phosphate Dimethacrylate: An Alternative Functional Phosphate Ester Monomer to 10-Methacryloyloxydecyl Dihydrogen Phosphate for Enamel Bonding

et al. 2020

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The bonding performance of a glycerol phosphate dimethacrylate (GPDM)-based, two-step, self-etch (SE) adhesive was experimentally compared to that of 10-methacryloyloxydecyl dihydrogen phosphate (MDP)-based universal adhesives in different application modes for enamel bonding. Microtensile bond strength (μTBS) for adhesives bonded to enamel was measured initially (24 h water storage) and after 10 000 thermocycles plus water storage for 30 days. A GPDM-based, two-bottle, two-step, self-etch adhesive (Optibond Versa, OV) and three one-bottle MDP-based universal adhesives, one self-etching (Tetric N Bond Universal, TNBU) and two with etch-and-rinse (E&R) processing (Single Bond Universal (SBU); Clearfil Universal Bond Quick (CUBQ)), were tested. Scanning electron microscopy (SEM) evaluated nanoleakage at the bonding interfaces. A profilometer determined roughnesses of enamel surfaces after phosphoric acid etching, OV priming, or TNBU conditioning. SEM observed the corresponding surface morphology. NMR and X-ray photoelectron spectroscopy (XPS) characterized chemical bonding in hydroxyapatites (HAps) conditioned with the adhesives. Etch-and-rinse samples had significantly stronger bonding than self-etch samples ( p < 0.05) irrespective of aging. The μTBS values for initial and aged OV were significantly higher than those of TNBU ( p < 0.05). Aging did not significantly decrease μTBS for any sample except TNBU ( p < 0.05), but it significantly aggravated nanoleakage. Etch-and-rinse processing resulted in less nanoleakage than self-etching; the OV samples leaked less than TNBU, both before and after aging. Phosphoric acid etching achieved the highest enamel surface roughness, followed by OV primer. Ca–O–P bonds in hydroxyapatite conditioned with TNBU, SBU, and CUBQ were confirmed by NMR, which showed similar results to XPS observations of conditioned hydroxyapatite powders except OV primer. The GPDM-based, two-step, self-etch adhesive can provide higher micromechanical retention potential, bond strength, and durability than the MDP-based universal adhesive in self-etch mode but lower performance than the MDP-based universal adhesive in etch-and-rinse mode. None of the tested adhesives could avoid nanoleakage after aging.

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“…7 The process improves the surface energy of LDC, and increases surface area and surface roughness. 8 Another method to improve retention of all ceramic restoration is preparation of the tooth structure. However, the process is still under debate as it results in irreversible damage to teeth and dentin exposure with low bond integrity.…”

Section: Introductionmentioning

confidence: 99%

Influence of resin removal treatments on the surface topography and strength of de-bonded lithium disilicate ceramic

Jeaidi

2022

Journal of Applied Biomaterials & Functional Materials

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Aim: This study aims to assess the influence of resin removal treatment regimes on the surface topography and compressive strength of de-bonded ceramic surfaces. Material and methods: Sixty-five lithium disilicate ceramic (LDC) discs were prepared, cleaned, and polished with carbide paper. All samples were etched using 9.6% hydrofluoric acid (HFA). Fifteen samples were taken as positive controls; the remaining 50 samples were subjected to the process of silanization. Resin build-up using dual-cure cement was performed incrementally and light cured. Based on different methods of resin cleaning from de-bonded LDC, the samples were divided into five groups, n=10 each: group 1 (no treatment), group 2 (slow-speed diamond bur), group 3 (1 min heat treatment), Group 4 (6 min heat treatment), and group 5 (sandblasting with Al2O3). Following resin removal, LDC samples were tested under compressive failure load in a universal testing machine. Five disc specimens from each group were sputter coated with gold for scanning electron microscopy (SEM). Analysis of variance (ANOVA) and Tukey’s post hoc test was used for descriptive statistics. Level of significance was established at p<0.05. Results: The highest compressive strength with significant difference among all experimental groups was found in group 5 (321.54 ± 13.25 MPa) ( p<0.05). The lowest compressive strength values, presenting significant difference compared with all other groups, were displayed in group 1 (158.57 ± 5.22 MPa) ( p<0.05). Compressive strength among group 2 (231.54 ± 15.55 MPa), group 3 (237.81 ± 10.81 MPa), and group 4 (255.53 ± 8.95 MPa) specimens was statistically comparable ( p>0.05). On SEM, heat-treated specimens confirmed coarser granules, with mild porosities and roughening, whereas sandblasted specimens exhibited consistent evenness with moderate porosity and loss of glazed surface. Conclusion: De-bonded LDC surface, treated with heat treatment and sandblasting procedures, exhibited removal of residual resin and significantly high compressive strength compared with non-cleansed ceramic surface.

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The impact of etching time and material on bond strength of self-adhesive resin cement to eroded enamel

Cited by 11 publications

References 34 publications

Impact of fluoride-releasing orthodontic adhesives on the shear bond strength of orthodontic brackets to eroded enamel following different surface treatment protocols

Impact of fluoride-releasing orthodontic adhesives on the shear bond strength of orthodontic brackets to eroded enamel following different surface treatment protocols

Glycerol Phosphate Dimethacrylate: An Alternative Functional Phosphate Ester Monomer to 10-Methacryloyloxydecyl Dihydrogen Phosphate for Enamel Bonding

Influence of resin removal treatments on the surface topography and strength of de-bonded lithium disilicate ceramic

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