Dentin Bond Strength of a Fluoride-Releasing Adhesive System Submitted to pH-Cycling

Costa, Ana Rosa; Correr-Sobrinho, Lourenço; Ambrosano, Gláucia María Bovi; Sinhoreti, Mário Alexandre Coelho; Borges, Gilberto Antônio; Platt, Jeffrey A.; Puppin-Rontani, Regina Maria

doi:10.1590/0103-6440201302445

Cited by 8 publications

(11 citation statements)

References 20 publications

(40 reference statements)

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“…Both tested adhesives showed non-significant reductions in fluoride and calcium, but significant reductions in phosphorus, after nine months of water storage. Although the total mineral content of Prime & Bond NT group was higher in all test periods, both adhesives performed similarly in terms of the aging effect of the adhesive on the mineral content of the adhesive dentin interface area (Figure 2) The present results agreed with that reported by Costa et al and Reis et al [15,34] The released fluoride ions penetrate and diffuse through the dentin walls, increasing mineralization, inhibiting dentinal demineralization, and improving age resistance, which is expected to minimize the risk of recurrent caries [4,12,35,36] .…”

Section: Discussionsupporting

confidence: 91%

“…Da Silva et al found that a fluoridecontaining adhesive system reduced the rate of caries formation and showed a reasonable bonding results when maintained in water for one year [14] . Costa et al 2014, recorded the fluoride ions released from fluoride-containing adhesive system in demineralization/remineralization solutions and concluded that fluoride was released in a very low concentration into the solutions because the dentin/ composite interface exposed to solution was very small [15] . Dentin's high organic content and continuous humidity make resin composite bonding difficult.…”

Section: Introductionmentioning

confidence: 99%

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Effect of Aging on Mineral Content of Resin-Dentin Interface Treated with Total Etch Adhesives

El-Bouhi¹,

Elkwatehy

Al-aleem

2021

Egyptian Dental Journal

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Background/Aim: Slow release of fluoride from adhesives increases the concentration of fluorapatite in the hybrid layer and the underlying dentin and subsequently stabilizes the adhesive joint interface. The present study aimed to evaluate the effect of aging on the mineral content of the bonded resin/dentin interface and to compare between two similar commercial adhesive systems. Materials and Methods:This in vitro study was carried out on 20 caries-free upper and lower human molar teeth. All the procedures of acid etching, application of adhesives and resin composite buildup were restricted to dentin. Each tooth was prepared to receive Adper Single Bond 2 adhesive system on one half (Group I) and Prime & Bond NT on the other half (Group II). Sticks from the same tooth half of each adhesive system were mixed and then randomly divided into 3 subgroups according to storage time regimen: immediate, 3 months and 9 months in distilled water. The mineral content at resin-dentin interfaces was analyzed using an environmental scanning electron microscope and energy dispersive analytical x-ray that was expressed as an atom percentage of the total area evaluated. Oneway ANOVA followed by Tukey's pair-wise comparison test were used to determine the significant effect of aging on the mineral content of resin-dentin interface. Comparison between the two adhesives at different time intervals was done using independent student t test, with p value less than 0.05 considered statistically significant.Results: There was significant difference among different follow up intervals regarding the mineral content of group I (p=0.040), while group II showed non-significant difference at same intervals (p=0.093). When the results of the two adhesives were compared to each other, there was no statistically significant difference between them in all of the storage periods except at 9 months (p=0.050). Conclusions:Both adhesives had an influence on the adhesive dentin interface's durability and resistance to degradation. Prime & Bond NT provided higher mineral content than Adper Single Bond 2 at all storage intervals tested.

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Section: Discussionsupporting

confidence: 91%

Section: Introductionmentioning

confidence: 99%

Effect of Aging on Mineral Content of Resin-Dentin Interface Treated with Total Etch Adhesives

El-Bouhi¹,

Elkwatehy

Al-aleem

2021

Egyptian Dental Journal

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“…High bond strength values can be verified immediately after the bonding procedures. However, these findings are not completely related to the long-term bond stability, since the resin-dentin bonding degradation may start in earlier stages (6 months or less) (16). This may be worsened for bonding to carious substrates after long-term water exposure (13).…”

Section: Different Dentin Substrate Affects μTbs Over Timementioning

confidence: 99%

Influence of Different Dentin Substrate (Caries-Affected, Caries-Infected, Sound) on Long-Term μTBS

et al. 2017

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The aim of this study was to evaluate the μTBS in different dentin substrates and water-storage periods. Twenty-four dentin blocks obtained from sound third molars were randomly divided into 3 groups: Sound dentin (Sd), Caries-affected dentin (Ca) and Caries-infected dentin (Ci). Dentin blocks from Ca and Ci groups were subjected to artificial caries development (S. mutans biofilm). The softest carious tissue was removed using spherical drills under visual inspection with Caries Detector solution (Ca group). It was considered as Ci (softer and deeply red stained dentin) and Ca (harder and slightly red stained dentin). The Adper Single Bond 2 adhesive system was applied and Z350 composite blocks were built in all groups. Teeth were stored in deionized water for 24 h at 37 ºC and sectioned into beams (1.0 mm 2 section area). The beams from each tooth were randomly divided into three storages periods: 24 h, 6 months or 1 year. Specimens were submitted to µTBS using EZ test machine at a crosshead speed of 1.0 mm/min. Failure mode was examined by SEM. Data from µTBS were submitted to split plot two-way ANOVA and Tukey's HSD tests (α=0.05). The µTBS (MPa) of Sd (41.2) was significantly higher than Ca (32.4) and Ci (27.2), regardless of storage. Ca and Ci after 6 months and 1 year, presented similar µTBS. Mixed and adhesive failures predominated in all groups. The highest µTBS values (48.1±9.1) were found for Sd at 24 h storage. Storage of specimens decreased the µTBS values for all conditions.

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“…However, the mechanisms and efficacy of fluoride derived from restorative materials are still uncertain. Costa et al (13) quantified the fluoride ions in demineralization/remineralization solutions and concluded that fluoride from these materials was released in very low concentrations, probably restricted to a small portion of dentin/composite interface exposed in the solutions.…”

Section: Introductionmentioning

confidence: 99%

Effect of Fluoride-Releasing Adhesive Systems on the Mechanical Properties of Eroded Dentin

et al. 2016

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The aim of the study was to evaluate the effect of erosive pH cycling with solutions that simulate dental erosion on Martens hardness (HMV) and elastic modulus (Eit) of dentin restored with fluoride-releasing adhesive systems. Twenty-seven bovine dentin slabs were restored with three adhesive systems: Adper Single Bond 2 total-etch adhesive system, One Up Bond F and Clearfil SE Protect fluoride-containing self-etching adhesive systems. The restorations were made with Filtek Z250. The HMV and Eit values at distances of 10, 30, 50 and 70 µm from the interface were evaluated using a dynamic ultra microhardness tester before and after immersion in deionized water, citric acid and hydrochloric acid (n=9). Data were submitted to repeated-measures ANOVA and Fisher's PLSD tests (=0.05). After erosive cycling, HMV values of dentin decreased in all groups. For dentin restored with Adper Single Bond 2, the lowest values were found closer to the hybrid layer, while for One Up Bond F and Clearfil SE Protect, the values remained unaltered at all distances. For dentin restored with fluoride-releasing adhesive systems, a decrease in Eit was found, but after 30 µm this difference was not significant. The acid substances were able to alter HMV and Eit of the underlying dentin. For fluoride-releasing adhesives, the greater the distance from bonded interface, the lower the Eit values. The fluoride in One Up Bond F and Clearfil SE Protect was able to protect the underlying dentin closer to the materials. In this way, the fluoride from adhesive systems could have some positive effect in the early stages of erosive lesions.

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Dentin Bond Strength of a Fluoride-Releasing Adhesive System Submitted to pH-Cycling

Cited by 8 publications

References 20 publications

Effect of Aging on Mineral Content of Resin-Dentin Interface Treated with Total Etch Adhesives

Effect of Aging on Mineral Content of Resin-Dentin Interface Treated with Total Etch Adhesives

Influence of Different Dentin Substrate (Caries-Affected, Caries-Infected, Sound) on Long-Term μTBS

Effect of Fluoride-Releasing Adhesive Systems on the Mechanical Properties of Eroded Dentin

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