Abstract:Background
To evaluate the antibacterial property of a modified orthodontic resin with different concentrations of silver-nanoparticles (AgNPs), and quantify its preventive effect on the formation of white spot lesions (WSLs).
Material and Methods
An orthodontic resin (Transbond XT) was modified with four concentrations of AgNPs (1%, 0.5%, 0.1%, and 0.05%), the orthodontic resin without AgNPs was used as control. Polymerized resin discs (n=80) were submitted to Agar dif… Show more
“… 71 Considering enamel remineralization, some researchers confirmed that orthodontic resin modified by a certain concentration of AgNPs (1 wt%) prevents WSL formation more efficiently ( Figure 4 ). 72 In addition, orthodontic brackets coated with titanium oxide mixed with Ag could significantly reduce the adhesion of S. mutans and P. gingivalis , and biofilm formation. 73 , 74 Figure 4 Orthodontic resin modified by a certain concentration of AgNPs.…”
Section: Antimicrobial Agbms Incorporated In Dental Materialsmentioning
confidence: 99%
“…This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. 72 …”
Section: Antimicrobial Agbms Incorporated In Dental Materialsmentioning
Microbial infection accounts for many dental diseases and treatment failure. Therefore, the antibacterial properties of dental biomaterials are of great importance to the long-term results of treatment. Silver-based biomaterials (AgBMs) have been widely researched as antimicrobial materials with high efficiency and relatively low toxicity. AgBMs have a broad spectrum of antimicrobial properties, including penetration of microbial cell membranes, damage to genetic material, contact killing, and dysfunction of bacterial proteins and enzymes. In particular, advances in nanotechnology have improved the application value of AgBMs. Hence, in many subspecialties of dentistry, AgBMs have been researched and employed, such as caries arresting or prevention, root canal sterilization, periodontal plaque inhibition, additives in dentures, coating of implants and anti-inflammatory material in oral and maxillofacial surgery. This paper aims to provide an overview of the application approaches of AgBMs in dentistry and present better guidance for oral antimicrobial therapy via the development of AgBMs.
“… 71 Considering enamel remineralization, some researchers confirmed that orthodontic resin modified by a certain concentration of AgNPs (1 wt%) prevents WSL formation more efficiently ( Figure 4 ). 72 In addition, orthodontic brackets coated with titanium oxide mixed with Ag could significantly reduce the adhesion of S. mutans and P. gingivalis , and biofilm formation. 73 , 74 Figure 4 Orthodontic resin modified by a certain concentration of AgNPs.…”
Section: Antimicrobial Agbms Incorporated In Dental Materialsmentioning
confidence: 99%
“…This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. 72 …”
Section: Antimicrobial Agbms Incorporated In Dental Materialsmentioning
Microbial infection accounts for many dental diseases and treatment failure. Therefore, the antibacterial properties of dental biomaterials are of great importance to the long-term results of treatment. Silver-based biomaterials (AgBMs) have been widely researched as antimicrobial materials with high efficiency and relatively low toxicity. AgBMs have a broad spectrum of antimicrobial properties, including penetration of microbial cell membranes, damage to genetic material, contact killing, and dysfunction of bacterial proteins and enzymes. In particular, advances in nanotechnology have improved the application value of AgBMs. Hence, in many subspecialties of dentistry, AgBMs have been researched and employed, such as caries arresting or prevention, root canal sterilization, periodontal plaque inhibition, additives in dentures, coating of implants and anti-inflammatory material in oral and maxillofacial surgery. This paper aims to provide an overview of the application approaches of AgBMs in dentistry and present better guidance for oral antimicrobial therapy via the development of AgBMs.
“…The use of AgNPs have been extensive employed in the dental field ( 24 , 25 ). Concentrations close to 1% show important antibacterial effects without affecting the mechanical properties of dental materials ( 13 , 25 ).…”
Section: Discussionmentioning
confidence: 99%
“…The use of AgNPs have been extensive employed in the dental field ( 24 , 25 ). Concentrations close to 1% show important antibacterial effects without affecting the mechanical properties of dental materials ( 13 , 25 ). The incorporation of higher concentrations of AgNPs produces color change in the material, causing it to acquire a dark grey color, affecting the esthetic characteristics of the material.…”
Section: Discussionmentioning
confidence: 99%
“…Only the lowest concentration (0.05%) can be considered clinically imperceptible to the human eye, and comparable to the color changes produced in the control group. In a previous study, the use of a concentration of 0.05% of AgNPs in an orthodontic resin has been effective to inhibit the growth of S. mutans and L. acidophilus ( 25 ). Thus, this concentration would be effective to improve the antibacterial properties of orthodontic resins without affecting the color of the enamel.…”
Background
To evaluate the effect of an orthodontic resin modified with various concentrations of silver-nanoparticles (AgNPs) on enamel color.
Material and Methods
Twenty lower premolars were collected and divided into four groups (n = 5) according to the concentration of AgNPs (0.05%, 0.1%, 0.5%, and 1% wt/wt). Additionally, a group bonded with a conventional resin was used as control (n=5). Previous to the bracket bonding, enamel color was measuring with a spectrophotometer. Specimens were stored for 6 months in deionized water. Brackets were debonded and color changes of enamel were calculated with the CIEDE 2000 formula (∆E00). One-way ANOVA and Tukey test were used to assess the color change (α = .05).
Results
The control group showed the lowest ∆E00 values, and no significant difference was observed when compared to the group with 0.05% of AgNPs (
P
> .05). The highest color change was observed in the group with 1% of AgNPs (∆E00 = 8.04±1.48), however no significant difference was observed between groups with 0.1% and 0.5% AgNPs.
Conclusions
The incorporation of AgNPs into orthodontic resin result in tooth color alteration. Lower concentrations of AgNPs should be considered to minimize negative changes in enamel color.
Key words:
White spot lesions, antibacterial, orthodontics, adhesive, Silver-nanoparticles.
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