Effects of sodium hypochlorite as dentin deproteinizing agent and aging media on bond strength of two conventional adhesives

Nima, Gabriel; Cavalli, Vanessa; Bacelar‐Sá, Renata; Ambrosano, Gláucia María Bovi; Giannini, Marcelo

doi:10.1002/jemt.23401

Cited by 20 publications

(21 citation statements)

References 36 publications

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“…Their results showed a decrease in adhesive strength in vital parts but not in pieces worked in vitro . [ 7 8 9 ] However, in this study the values obtained in the ethanol wash group are higher (with PF 29.0MPa [group 2]; without PF 31.26MPa [group 4]) than those obtained with the conventional washing technique (with PF 22.5MPa [group 1]; without PF 25.5MPa [group 3]). This may be because the adhesive used for this investigation has a presence of mixed monomers, which would easily allow the entry of hydrophobic and hydrophilic monomers into the ethanol wash group.…”

Section: Discussioncontrasting

confidence: 58%

“…What agrees with this study because the values obtained with the ethanol wash group are higher (with PF 29.0MPa; without PF 31.26MPa) than those obtained with the conventional technique (with PF 22.5MPa; without PF 25.5MPa), reaching the same conclusion about the tolerance of wastewater, either due to the presence of pulp pressure (vital parts) or by using the simplified dehydration technique. [ 8 ]…”

Section: Discussionmentioning

confidence: 99%

“…The results of adhesive strength obtained are consistent with what was expected because it was found to be significantly higher in parts restored with the technique of washing with ethanol. [ 8 9 ]…”

Section: Discussionmentioning

confidence: 99%

“…[ 7 ] Therefore, the use of the wet ethanol adhesive technique and some contemporary hydrophilic adhesive systems, compared to the traditional use of these adhesives on a demineralized matrix saturated in water, can create an adhesive force similar to or greater than 24h in vitro . [ 8 ]…”

Section: Introductionmentioning

confidence: 99%

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Bond strength to microtraction and nanofiltration using ethanol wet bonding technique in fresh extracted teeth: An ex vivo study

Caceres

Ayala

Alvítez-Temoche

et al. 2020

J Int Soc Prevent Communit Dent

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A BSTRACT Objective: The objective of this study was to evaluate the bond strength to microtraction and nanofiltration using ethanol wet bonding technique in fresh extracted teeth. Materials and Methods: This quasi-experimental ex vivo study evaluated 48 teeth that had an indication of premolar extraction due to orthodontic reasons. The protocol of dental preparation and restorative procedure was carried out to evaluate the adhesion resistance by means of the universal testing machine at a loading speed of 0.5 mm/min and 500MPa. To evaluate the nanofiltration, matches were made that were immersed in ammoniac silver nitrate for 24h, and then the specimens impregnated with silver were washed thoroughly in distilled water and placed in a photo-developer solution for 8h under a fluorescent light. All statistical analyses were statistically evaluated with a level of significance P < 0.05. Results: The ethanol technique without premature failure (PF) group had an average of 31.26 ± 10.26MPa, whereas the lowest value was found in the water technique group with PF, which had 22.59 ± 12.27MPa. When performing inferential statistics, it was evidenced that there were statistically significant differences between both techniques with a value of P < 0.05. Conclusion: According to the results in both cases, the adhesive strength showed superiority in the ethanol wash group. It determines that this technique presents greater tolerance to the residual presence of water. Finally, in relation to nanofiltration we found that there were no significant differences between the groups evaluated.

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Section: Discussioncontrasting

confidence: 58%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Bond strength to microtraction and nanofiltration using ethanol wet bonding technique in fresh extracted teeth: An ex vivo study

Caceres

Ayala

Alvítez-Temoche

et al. 2020

J Int Soc Prevent Communit Dent

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“…Furthermore, aging protocols such as thermocycling, fatigue and water storage were reported to impair the bond strength of dentin [ 30 – 32 ]. Thermocycling, a widely used artificial aging method, may lead to contraction and expansion stresses at the adhesive interface and accelerate the chemical degradation of the adhesive interface, jeopardizing the bond strength [ 31 ].…”

Section: Introductionmentioning

confidence: 99%

Effects of remaining dentin thickness on the bond strength of bleached dentin

et al. 2020

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Background: The bond strength of resin composites to dentin was reported to be related to either the remaining dentin thickness (RDT) or bleaching treatment. However, information is limited regarding the effects of RDT on the bond strength of bleached dentin. The present study aimed to investigate the effects of RDT on the microshear bond strength (μSBS) of resin cement to bleached dentin. Methods: A total of 120 dentin specimens were prepared and randomly divided into 2 groups: a bleaching group (group B) and a control group (group C). Hydrogen peroxide with a concentration of 35% (Ultradent, USA) was applied on the dentin surface for 2 × 1 d for group B, while no bleaching treatment was performed for group C. After the treatment, the specimens were finished and polished to obtain different RDTs (2, 1, and 0.5 mm) and divided into 3 groups of 20 specimens each. The bonding procedure was performed using Panavia V5 (Kuraray, Japan) with a bonding area of 0.785 mm 2. For each group, half of the specimens were subjected to 5000 thermal cycles (subgroup T), while the other half did not receive thermocycling (subgroup N) (n = 10). The specimens were then subjected to the μSBS test using a universal testing machine. Data were analyzed by a three-way analysis of variance (α = 0.05). The fracture modes of the specimens were confirmed with a measuring microscope. Representative specimens with different fracture modes were observed with scanning electron microscopy (SEM). Results: The μSBS values were significantly affected by bleaching treatment (p < 0.001), whereas no significant effect was observed for thermocycling (p = 0.293). In terms of RDT, a significantly different μSBS value was found among the subgroups with different RDTs in group C (p = 0.003). However, the RDT did not significantly affect the μSBS values of bleached dentin in group B (p = 0.779). The μSBS values were significantly lower in group B than in group C (p < 0.001). A higher percentage of adhesive failure was observed in group B than in group C. Conclusion: Based on the present findings, it can be concluded that the RDT did not affect the bond strength of resin cement to bleached dentin. Clinical significance: Since RDT did not affect the bond strength of resin cement to bleached dentin, bonding procedures should not be performed immediately after intracoronal bleaching, even if the dentin is planned to be removed due to a tooth preparation process.

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Detection of the hybrid layer biodegradation initiation factor with a scanning electron microscope

Paken

Çömlekoğlu

Sonugelen

2021

Microscopy Res & Technique

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The purpose of this study was to elucidate the origin of initiation of hybrid layer biodegradation. Ninety caries‐free human third molars were divided into three surface groups: enamel, dentin, and NaOCl‐treated dentin. (n = 30/group) Each group was divided into three subgroups (n = 10/group) of luting resin materials with etch‐and‐rinse; self‐etch and self‐adhesive systems. Resin composite blocks and sticks were fabricated and adhered onto dentin and enamel surfaces. The bond strength values were evaluated with micro shear test and statistical analysis were made. On the other hand, teeth were sectioned with a slow‐speed saw into multiple beams. After thermocycling, samples were kept in 50% silver nitrate solution. Samples were analyzed with SEM in back‐scattered mode. According to the micro‐shear bond tests, higher bond strength values were observed in etch‐and‐rinse system. Bond strength values in self‐adhesive and etch‐and‐rinse groups were significantly higher than self‐etch groups in dentin surface and dentin surface treatment with NaOCl. Back‐scattered scanning electron microscope results showed that, different degradation mechanism was observed. The present study indicates that, due to the acid etching in dentin, collagen biodegradation was observed within the hybrid layer. On the enamel surfaces, resin degradation was related with resin monomers in adhesive systems.

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Effects of sodium hypochlorite as dentin deproteinizing agent and aging media on bond strength of two conventional adhesives

Cited by 20 publications

References 36 publications

Bond strength to microtraction and nanofiltration using ethanol wet bonding technique in fresh extracted teeth: An ex vivo study

Bond strength to microtraction and nanofiltration using ethanol wet bonding technique in fresh extracted teeth: An ex vivo study

Effects of remaining dentin thickness on the bond strength of bleached dentin

Detection of the hybrid layer biodegradation initiation factor with a scanning electron microscope

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