Does the size matter? Evaluation of effect of incorporation of silver nanoparticles of varying particle size on the antimicrobial activity and properties of irreversible hydrocolloid impression material

Ginjupalli, Kishore; Shaw, Tushar; Tellapragada, Chaitanya; Alla, Rama Krishna; Gupta, Lokendra; Perampalli, Nagaraja Upadhya

doi:10.1016/j.dental.2018.03.016

Cited by 29 publications

(29 citation statements)

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“…According to the American Dental Association specification, the maximum permanent deformation recommended is 3%; however, all groups, including the control, presented higher values. These results corroborate studies reporting that disinfectants may alter the crosslinking density, thus promoting significant impression distortion during the mold removal from the oral cavity . Therefore, a large number of reactive components can be replaced with AgVO 3 , leading to the formation of a weaker gel network and a consequently lower elasticity of the impression material.…”

Section: Discussionsupporting

confidence: 89%

“…In addition, it reduces the loss of nanoparticles by leaching, and it has the shape of a ball of yarn and can more easily adhere to the materials . As in studies involving other compounds, the antimicrobial effect was dose dependent for all microorganisms except for P. aeruginosa and S. aureus , which showed high susceptibility to the less concentrated material. This difference can be attributed to the metabolic characteristics of each microorganism.…”

Section: Discussionmentioning

confidence: 92%

“…Irreversible hydrocolloids are the most commonly used impression materials in dentistry and are usually used for making preliminary impressions of dental arches. They are also the most criticized in terms of their disinfection process . Inherent limitations in their dimensional instability have resulted in restrictions related to the disinfection time and the choice of substance used.…”

mentioning

confidence: 99%

“…In dentistry, its application is incorporation into acrylic resins, denture‐based relining materials, root canal obturation materials and others . Similarly, the addition of AgNPs provides irreversible hydrocolloids with self disinfection ability . Despite numerous advantages, due to their large surface area, fine particles, including those at the nanometer scale, often clump together, forming secondary particles that limit their use, which poses a scientific challenge .…”

mentioning

confidence: 99%

“…They are also the most criticized in terms of their disinfection process. 1 Inherent limitations in their dimensional instability have resulted in restrictions related to the disinfection time and the choice of substance used. Due to their hydrophilic nature, which is also responsible for the highest retention of microorganisms, disinfection should be conducted with a product that requires the least amount of time for the disinfection process.…”

mentioning

confidence: 99%

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Development of an Impression Material with Antimicrobial Properties for Dental Application

Castro

Kreve

Oliveira

et al. 2019

Journal of Prosthodontics

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Purpose To evaluate the antimicrobial activity and physico‐mechanical properties of an irreversible hydrocolloid in which nanostructured silver vanadate decorated with silver nanoparticles (AgVO3) was added at various concentrations (0% ‐ control, 2.5%, 5%, and 10% by weight). Materials and Methods The agar diffusion method (n = 10) was used to evaluate the inhibitory effect on the following species: Streptococcus mutans, Staphyloccocus aureus, Pseudomonas aeruginosa, Escherichia coli, and Candida albicans. The gelation time, flow capacity and plastic deformation were verified (n = 10). The data were analyzed using the Kruskal‐Wallis test followed by the Dunn post‐test, or via one‐way ANOVA with multiple comparisons with a Bonferroni adjustment depending on the distribution (α = 0.05). Results All percentages of the nanomaterial were able to promote the antimicrobial activity of a hydrocolloid, with the formation of an inhibition zone (p < 0.05). In general, there was a dose‐dependent effect on antimicrobial activity: higher concentrations of the nanomaterial promoted greater action except in the cases of P. aeruginosa (p < 0.001; F = 51.74) and S. aureus (p < 0.001), where the highest inhibition was for the 2.5% group. No difference was found in the gelation time when the control was compared with the groups with AgVO3 (p > 0.05). The difference was between the 5% and 10% groups (p = 0.007), and the latter promoted an increase in time. The flow capacity of the hydrocolloid with 5% of AgVO3 was significantly lower when compared with the control (p = 0.034). The AgVO3 influenced the plastic deformation (p < 0.001) in such a way that concentrations of 5% (p = 0.010) and 10% (p < 0.001) promoted an increase in this property when compared with the control. Conclusions AgVO3 can be incorporated into an irreversible hydrocolloid as an antimicrobial agent without promoting adverse effects on physical‐mechanical properties when used in concentrations of 2.5%.

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Section: Discussionsupporting

confidence: 89%

Section: Discussionmentioning

confidence: 92%

mentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

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