Dental Adhesives—Surface Modifications of Dentin Structure for Stable Bonding

Fronza, Bruna Marin; Braga, Roberto Ruggiero; Cadenaro, Milena

doi:10.1016/j.cden.2022.05.002

Cited by 4 publications

(3 citation statements)

References 64 publications

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“…In addition, the formed MDP-Ca salts are deposited on the collagen fibers and protect them from degradation by proteases and collagenases [60]. These collagenases include the well-known matrix metalloproteinases, whose negative influence on the adhesive bond through nanoleakage has been described in many publications [2,[61][62][63]. In our study, Futurabond ® U and AdheSE ® Universal contain 10-MDP as a functional monomer [64,65], for which no significant difference between the etch-and-rinse and selfetch groups could be observed with regard to µTBS in irradiated and non-irradiated group.…”

Section: Discussionmentioning

confidence: 99%

Bond Strength Evaluation of Universal Adhesives Applied in Self-Etch and Etch-and-Rinse Modus on Sound and High-Level Irradiated Dentin - a Controlled Laboratory Study

Nguyen,

Broscheit,

Vordermark

et al. 2023

Preprint

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Background: Radiotherapy is an important part of the medical therapy concept treating tumors in the head and neck region; however, the impact on the field of dentistry could be im-mense. The objective of this study was to evaluate the microtensile bond strength (µTBS) of uni-versal adhesives and to compare the results of different application modes (etch-and-rinse and self-etch) on irradiated and sound human dentin. Methods: Dentin specimen of 180 extracted human wisdom teeth were divided in two superordinate groups. Ninety teeth received either no irradiation (control group) or the high-level therapeutic dose of 60 Gy (test group) applied frac-tionally (2 Gy/day, 5 days/week, 6 weeks). Samples from each group were randomly divided in-to six subgroups assigned to three established universal adhesives (Futurabond® U, VOCO; AdheSE® Universal, Ivoclar Vivadent; Xeno® Select, Dentsply) in both conceivable application modes: etch-and-rinse and self-etch (n = 15). Bond strength was assessed with a universal testing machine immediately after application and light curing of the adhesive materials. Statistical analysis was performed using two-way ANOVA (p<0.01) and Tukey's test (p<0.05). Results: The effect of dentin irradiation and application mode for the adhesive restoration was found to be significant (p<0.01, ANOVA). In all groups, a decrease of µTBS could be observed when used on irradiated dentin. However, no significant influence of high level radiation on the bond strength of Futurabond® U and AdheSE® Universal in both modes could be evaluated (p>0.05, Tukey´s test). Solely in the case of the adhesive system Xeno® Select, significantly reduced bond strength could be determined in self-etch mode after irradiation (group 60 Xse) compared to the control group (0 Xse) (p<0.05, Tukey´s test). Conclusions: Within the limitations of an in vitro study, some effects of high-level tumor irradiation on the bond strength of universal adhesives can be detected. However, these effects were strongly depending on the used material and application mode.

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Section: Discussionmentioning

confidence: 99%

Bond Strength Evaluation of Universal Adhesives Applied in Self-Etch and Etch-and-Rinse Modus on Sound and High-Level Irradiated Dentin - a Controlled Laboratory Study

Nguyen,

Broscheit,

Vordermark

et al. 2023

Preprint

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“…The longevity of the restorative interface is affected by processes such as hydrolysis and enzymatic degradation, which impact the hybrid layer [1][2][3][4] . Hydrolysis, a chemical process, breaks the covalent bonds within polymers by adding water to the ester bonds, resulting in a loss of resin mass 5 .…”

Section: Introductionmentioning

confidence: 99%

“…Strategies have been developed to increase the longevity of the hybrid layer by inhibiting the endogenous activity of these enzymes using various synthetic or natural pretreatment agents 3,6,11,[13][14][15] . Among these agents, there are polyphenolic-based compounds that contain secondary metabolites produced by plants, such as those derived from natural plant extracts (grape seed, cocoa, green tea), as part of their defense mechanisms 9,11 .…”

Section: Introductionmentioning

confidence: 99%

Stability of dentin matrix treated with caffeic acid phenethyl ester at different concentrations

Damázio,

Basting,

Bridi

et al. 2024

Braz. J. Oral Sci.

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Aim: The aim of this study was to investigate the impact of pretreatment with ethanolic solutions of caffeic acid phenethyl ester (CAPE) at varying concentrations on the dentin collagen matrix, specifically focusing on its biomodification potential. This was assessed through evaluations of the modulus of elasticity and changes in mass. Methods: Seventy dentin collagen matrices (demineralized sticks) were prepared to receive treatments with ethanolic solutions of CAPE at concentrations of 0.05%, 0.1%, 0.5%, or 2.5%, or with control treatment solutions (distilled water or ethanol) for one hour. The dentin matrices were evaluated for modulus of elasticity and mass before (baseline), immediately after treatment (immediately), and after storage in Simulated Body Fluid (SBF) for time intervals of 1 and 3 months. Results: Generalized linear models for repeated measures over time indicated no significant differences between groups (p=0.7530) or between different time points (p=0.4780) in terms of the modulus of elasticity. Regarding mass variation, no differences were observed in the time interval between 1 month and the immediate time (p=0.0935). However, at the 3-month mark compared to the immediate time, the 0.1% CAPE group exhibited less mass loss compared to the water group (p=0.0134). Conclusion: This study concludes that various concentrations of CAPE in an ethanolic solution did not affect the modulus of elasticity of dentin, suggesting that CAPE lacks biomodifying potential in this context. However, it was observed that 0.1% CAPE positively influenced the variation in mass over different evaluation time intervals.

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