Effects of silver nanoparticles on the bonding of three adhesive systems to fluorotic enamel

Méndez, Fernando Torres; Martínez-Castañón, Gabriel Alejandro; Torres-Gallegos, Iranzihuatl; Zavala-Alonso, Norma Verónica; Patiño-Marín, Nuria; Niño-Martínez, Nereyda; Ruíz, Facundo

doi:10.4012/dmj.2015-299

Cited by 19 publications

(14 citation statements)

References 42 publications

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“…Also, several studies have demonstrated the highly bactericidal effect of silver nanoparticles (NaAg) on the main bacteria causing tooth decay. It has even been shown that when added to first adhesive 4th generation, bonding properties to the dentin are not affected [12][13][14][15]. In our literature search, we found no studies where the effect of the incorporation of NaAg to 5th-generation self-etching primer on the mechanical properties, bonding, nanostructure, bactericides and cytotoxicity of normal and fluorotic dentin was analyzed.…”

Section: Introductionmentioning

confidence: 61%

Sodium Hypochlorite as Fluorotic Dentin Pretreatment of Two-Step Self-Etch Adhesive with Silver Nanoparticle: Atomic Force Microscope and Adhesive Microtensile Bond Strength Evaluation

Monjarás-Ávila

Zavala-Alonso

Martínez-Castañón

et al. 2017

Journal of Nanomaterials

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The objective of this work was to evaluate the effect of pretreatment with commercial sodium hypochlorite, 5.25%, with a self-etch adhesive (Optibond Versa) in its original formula and with the incorporation of silver nanoparticles (NaAg) on fluorotic dentin. 240 human molars were classified according to fluorosis severity with Thylstrup-Fejerskov Index (TFI) and subdivided into three study subgroups according to the adhesive technique: (1) self-etch (SE) control subgroup; (2) NaOCl/SE subgroup; (3) NaOCl/SE + NaAg subgroup. The nanostructural characteristics were observed by AFM, TBS was tested, and hybrid layer formation was observed by SEM. One-way analyses of variance (ANOVA) and Tukey-Kramer post hoc tests were used. No statistically significant differences were found in roughness values in any of the subgroups and subgroups studied. Remnants of smear layer were detected in areas devoid of resin tags in SEM images of samples bonded with subgroup 2, in contrast to subgroup 3. No statistically significant difference between any of the results was found in TBS and a greater number of adhesive failures were observed. The results show that the pretreatment technique of 5.25% NaOCl and the incorporation of NaAg to the self-adhesive system do not produce a surface more adequate for a better adhesion.

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Section: Introductionmentioning

confidence: 61%

Sodium Hypochlorite as Fluorotic Dentin Pretreatment of Two-Step Self-Etch Adhesive with Silver Nanoparticle: Atomic Force Microscope and Adhesive Microtensile Bond Strength Evaluation

Monjarás-Ávila

Zavala-Alonso

Martínez-Castañón

et al. 2017

Journal of Nanomaterials

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“…Although uorapatite may be more acid resistant, other structural changes, such as uorotic enamel's outer hypermineralized layer with a porous hypomineralized subsurface and the low surface energy, impair surface wetting. This results in a decrease in the bond strength [20]. In addition, when observing the fracture interface under SEM, cohesive failure is the most common failure method in this study.…”

Section: Discussionmentioning

confidence: 90%

Micromorphology analysis and compare bond strength of two adhesives to different degrees of dental fluorosis

Liu¹,

Zhu²,

Gegen³

2020

Preprint

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Objectives: The aim of this study was to evaluate bond strength and morphological analysis of the all-etching bonding system and self-etching bonding system to different degrees of fluorosed enamel. Methods: Teeth which were indicated for extractions for orthodontic or periodontal problems were selected. The collected teeth were mainly extracted due to orthodontic or periodontal disease. According to the Dean’s index and the Thylstrup and Fejerskov (TF) index, 180 extracted teeth were divided into three groups of mild, moderate and severe dental fluorosis, 60 teeth in each group. The teeth in each group were randomly divided into 2 subgroups (n=30) that were subjected to the all-etching bonding system (Prime & Bond NT) and self-etching bonding system (SE-Bond). Each group of adhesives was used to bond Z350 universal resin (3M) to the etched dental enamel. Tensile and shear testing were used to determine the bond strength. After the tensile testing, the fractured specimens were examined under scanning electron microscopy (SEM) and confocal laser scanning microscopic(CLSM). Results: The Prime & Bond NT had statistically significant on tensile and shear strength for mild fluorosis enamel (P<0.05), but it had no significant difference for moderate and severe dental fluorosis (P>0.05). Self-etching bonding system (SE-Bond) had no statistical significance on the tensile and shear strength for mild, moderate and severe dental fluorosis (P>0.05). SEM and CLSM showed that the mild fluorosis enamel crystals were relatively dense and a small amount of resin remained. The moderate fluorosis enamel crystals were loosely arranged and the gaps were widened. The severe fluorosis enamel crystals were irregularly arranged. The disorder was aggravated, and the dentinal orifice exposed by partial enamel exfoliation can be seen. Conclusions The bonding strength of mild fluorosis enamel to Prime & Bond NT was better than that of SE-Bond, cohesive failure is the most common failure method in this study. And there is no difference in the bonding strength of SE-Bond to different degrees of DF. Therefore, we suggested that the all -etching adhesive system was used to treat mild fluorosis teeth in the clinic. For moderate to severe fluorosis teeth, we may prolong the application time of self-etching adhesion to enhance enamel-etching pattern and promoted similar results in terms of adhesive enamel bond strength.

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“…These results are consistent with the results obtained by various previous studies. Although uorapatite may be more acid-resistant, other structural changes, such as the uorotic enamel's outer hypermineralized layer with a porous hypomineralized subsurface and low surface energy, impair the surface wetting, which results in the decrease in bond strength [22].…”

Section: Discussionmentioning

confidence: 99%

Micromorphological analysis and bond strength comparison of two adhesives for different degrees of dental fluorosis

Liu¹,

Zhu²,

Gegen³

2020

Preprint

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The objective of this study was to analyze morphologically the all-etching bonding system and self-etching bonding system for enamel with different degrees of fluorosis and evaluate the bond strength of each system. Teeth that were indicated for extraction owing to orthodontic or periodontal problems were selected. According to Dean’s index and the Thylstrup-Fejerskov index, 180 extracted teeth were divided into three groups of mild, moderate, and severe dental fluorosis (DF), with 60 teeth in each group. The teeth in each group were randomly divided into two subgroups (n = 30), which were then subjected to the all-etching bonding system (Prime & Bond NT) and self-etching bonding system (SE-Bond). Each group of adhesives was used to bond Z350 universal resin (3M) to the etched dental enamel. Tensile and shear tests were conducted to determine the bond strength. Subsequently, the fractured specimens were investigated using scanning electron microscopy (SEM) and confocal laser scanning microscopy (CLSM). The Prime & Bond NT was statistically significant for the tensile and shear strength of enamel with mild fluorosis (P < 0.05) but did not exhibit a significant difference for moderate and severe DF (P > 0.05). The SE-Bond was not statistically significant for the tensile and shear strength of mild, moderate, or severe DF (P > 0.05). The SEM and CLSM results reveal that the mild fluorosis enamel crystals were relatively dense, and a small amount of resin remained. The moderate fluorosis enamel crystals were loosely arranged, and the gaps were widened. The severe fluorosis enamel crystals were irregularly arranged. The disorder was aggravated, and the dentinal orifice was exposed by partial enamel exfoliation. The bonding strength of mild fluorosis enamel with the Prime & Bond NT was better than that with the SE-Bond, and cohesive failure was the most common mode of failure. Because there was no difference in the bonding strength of the SE-Bond for different degrees of DF, we recommend the use of the all-etching adhesive system in the clinical treatment of teeth with mild fluorosis.

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Effects of silver nanoparticles on the bonding of three adhesive systems to fluorotic enamel

Cited by 19 publications

References 42 publications

Sodium Hypochlorite as Fluorotic Dentin Pretreatment of Two-Step Self-Etch Adhesive with Silver Nanoparticle: Atomic Force Microscope and Adhesive Microtensile Bond Strength Evaluation

Sodium Hypochlorite as Fluorotic Dentin Pretreatment of Two-Step Self-Etch Adhesive with Silver Nanoparticle: Atomic Force Microscope and Adhesive Microtensile Bond Strength Evaluation

Micromorphology analysis and compare bond strength of two adhesives to different degrees of dental fluorosis

Micromorphological analysis and bond strength comparison of two adhesives for different degrees of dental fluorosis

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