Effect of MDP concentration and addition of iodonium salt on the dentin bond strength of experimental adhesives

Kinder, Gustavo Ross; Furuse, Adilson Yoshio; Costa, Rodrigo Moreira Bringel da; Lucena, Fernanda Sandes de; Correr, Gisele Maria; Gonzaga, Carla Castiglia

doi:10.4322/bds.2022.e2933

Cited by 2 publications

(2 citation statements)

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“…This performance may be attributed to the presence of functional monomers in the composition of the adhesive as the protective action of 10-MDP exerted on the fibers of collagen. 33 MDP-Ca salt is formed by the reaction between MDP and hydroxyapatite. It may mechanically protect demineralized dentin collagen, preventing the invasion of exogenous proteases and MMPs and decreasing collagenase activity.…”

Section: Discussionmentioning

confidence: 99%

Longitudinal bond strength of a universal adhesive and chemical dentin characterization under different acid etching protocols

GONÇALVES,

PRAKKI,

SILVA

et al. 2024

J. Appl. Oral Sci.

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Objective This study aimed to analyze the longitudinal bond strength of a universal adhesive and chemically characterize the dentin substrate under different acid etching protocols. Methodology Dentin samples were etched with polyacrylic acid 25% (PAA) for 10 seconds (n=3) and phosphoric acid 32% (PA) for 15 seconds (n=3) and analyzed by Fourier transform infrared spectroscopy – attenuated total reflectance (FTIR-ATR) before and after treatment. For collagen degradation, samples (n=12) were divided into 3 groups: PAA, PA, and Deionized water (control), and analyzed by the quantity of solubilized type I collagen C-terminal cross-linked telopeptides and solubilized C-terminal peptide in relation to total protein concentration (ICTPtp and CTXtp) and by their ultimate tensile strength (UTS). For the adhesive interface analysis, dentin samples (n=72) were divided into 3 groups: PAA, PA, and Self-etch (SE), and subdivided into 2 groups: 24 h (baseline) and 1 year. The following tests were performed: microtensile bond strength (μTBS) (n=48), scanning electron microscopy (SEM) (n=12), and nanoleakage (n=12). Results The FTIR of PAA showed lower reduction of the peaks in the phosphate group when compared to PA. For ICTPtp, PA showed a significantly higher value. For CTXtp, PA and PAA groups failed to statically differ from each other. UTS was significantly lower for PA. For μTBS, storage time significantly affected bond strength. The results were unaffected by the etching protocol. For SEM, after 1 year, PA had little evidence of degradation in the upper third of the adhesive interface in comparison to the other groups. Nanoleakage showed no considerable silver impregnation after 1 year in the SE group. Conclusion The use of PAA prior to a universal adhesive (when compared to PA) represents a less aggressive type of etching to dentin. However, self-etching still seems to be the best option for universal adhesive systems that have functional monomers in their composition.

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Section: Discussionmentioning

confidence: 99%

Longitudinal bond strength of a universal adhesive and chemical dentin characterization under different acid etching protocols

GONÇALVES,

PRAKKI,

SILVA

et al. 2024

J. Appl. Oral Sci.

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“…Chemical surface treatments can also increase bond strength during crowns cementation [26]. Few studies have shown that a tribochemical silica-coated (TSC) [27][28][29][30] or a functional monomer of 10-methacrylixydecyl dihydrogen phosphate (MDP) [31] can increase the bond strength between cement and ceramic crowns. New zirconia cementation protocols use selfadhesive resin cements and new universal adhesives that contain MDP, producing Y-TZP crowns with stable and durable bond strength [32][33][34].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of short- and long-term bond strength of zirconia after different surface treatments

PINTO-PARDO,

ARAYA,

DEISCHLER

et al. 2023

Braz. Dent. Sci.

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Objective:The aim of the study was to evaluate the short and long-term effects of different surface treatments on the bond strengths of zirconia. Material and Methods: 225 blocks of sintered zirconia samples (4 x 4 x 3 mm) were divided into five groups and subjected to different surface treatments: control group (without surface treatment), alumina group (sandblasting [25-µm-aluminum-oxide]), alumina+Ambar Universal-APS (AU) group, CoJet group (silica-coated [30-μm silica-modified aluminum particles]), and CoJet+AU group. Subsequently, zirconia samples were cemented against resin samples (total dimensions: 8x8x6mm) and assigned to three storage conditions: dry, humid (artificial saliva at 37°C for 30-days) or thermocycling [100.000-cycles] (n=15 per group). The microtensile bond strength (µTBS) was determined using a universal testing machine. The failure modes were observed and analyzed using a stereomicroscope. Normality tests, descriptive statistics, and two-way ANOVA, followed by post-hoc comparisons, were performed to evaluate the effect of surface treatments and storage conditions on µTBS (α=0.05). Results: μTBS was influenced by surface treatment in the short and long-term (P<0.0001). The highest values were found in CoJet+AU in dry (33.51 ±2.48 MPa), humid (32.87 ±2.68 MPa) and thermocycling (21.37 ±1.68 MPa) storage conditions compared with others. Interestingly, no significant differences in μTBS were found among alum +AU and CoJet alone under any of the three storage conditions. Adhesive failure increased in all groups after thermocycling, but CoJet+AU had the lowest values of adhesive failure compared with others. Conclusion: The combination of CoJet and Ambar universal as a surface treatment for zirconia specimens provides significantly higher short and long-term bond strengths of adhesive cementation.

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Effect of MDP concentration and addition of iodonium salt on the dentin bond strength of experimental adhesives

Cited by 2 publications

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Longitudinal bond strength of a universal adhesive and chemical dentin characterization under different acid etching protocols

Longitudinal bond strength of a universal adhesive and chemical dentin characterization under different acid etching protocols

Evaluation of short- and long-term bond strength of zirconia after different surface treatments

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