Evaluation of the Shear Bond Strength and Antibacterial Activity of Orthodontic Adhesive Containing Silver Nanoparticle, an In-Vitro Study
This study evaluated the effect of incorporating silver nanoparticles (AgNPs) into conventional orthodontic adhesive on its antibacterial activity and the shear bond strength (SBS) to stainless steel orthodontic brackets. Thirty-four extracted premolars were randomly allocated into two groups (<i...
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doaj-bdc475d47c614a43b9f6e590f70a91442020-11-25T03:51:30ZengMDPI AGNanomaterials2079-49912020-07-01101466146610.3390/nano10081466Evaluation of the Shear Bond Strength and Antibacterial Activity of Orthodontic Adhesive Containing Silver Nanoparticle, an In-Vitro StudyLadan Eslamian0Ali Borzabadi-Farahani1Shahedeh Karimi2Sepideh Saadat3Mohammad Reza Badiee4Dentofacial Deformities Research Center, School of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran 19857-17443, IranOrthodontics, Department of Clinical Sciences and Translational Medicine, University of Rome Tor Vergata, 00183 Rome, ItalySchool of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran 19857-17443, IranSchool of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran 19857-17443, IranDepartment of Orthodontics, School of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran 19857-17443, IranThis study evaluated the effect of incorporating silver nanoparticles (AgNPs) into conventional orthodontic adhesive on its antibacterial activity and the shear bond strength (SBS) to stainless steel orthodontic brackets. Thirty-four extracted premolars were randomly allocated into two groups (<i>n</i> = 17). Orthodontic adhesive (Transbond XT, 3M Unitek) was blended with AgNPs (50 nm, 0.3% <i>w</i>/<i>w</i>) to form a nano-adhesive. In order to bond stainless steel twin brackets (0.022-inch, American Orthodontics), Transbond XT (<i>n</i> = 17) and nano-adhesive (<i>n</i> = 17) were used in each group, respectively, after acid etching (37% phosphoric acid, 30 s) and rinsing with water (15 s). SBS and the adhesive remnant index (ARI) scores were recorded. Antibacterial activity against <i>Streptococcus mutans</i> in both groups after 24 h and 30 days was assessed (Disc agar diffusion test) and the inhibition zone diameter around each specimen was measured and recorded. Adding AgNPs significantly (<i>p</i> = 0.009) reduced the mean (SD) SBS in the nano-adhesive group [10.51(7.15) MPa] compared to Transbond XT [17.72(10.55) MPa]. The ARI scores on the Transbond XT and nano-adhesive showed no statistically significant difference (<i>p</i> = 0.322). Nano-adhesive with AgNPs showed significant antibacterial activity against <i>Streptococcus mutans</i> at 24 h and 30 days (<i>p</i> < 0.001). In both groups, no significant decline in the zones of inhibition was detected after 30 days (<i>p</i> = 0.907). The findings suggest that SBS decreased after incorporation of AgNPs [0.3% (<i>w/w</i>)], but was still above the recommended SBS of 5.9–7.8 MPa. The nano-adhesive showed significant antibacterial activity which did not change much after 30 days.https://www.mdpi.com/2079-4991/10/8/1466antibacterialremineralizationshear bond strengthorthodonticssilver nanoparticlesadhesive remnant index |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Ladan Eslamian Ali Borzabadi-Farahani Shahedeh Karimi Sepideh Saadat Mohammad Reza Badiee |
spellingShingle |
Ladan Eslamian Ali Borzabadi-Farahani Shahedeh Karimi Sepideh Saadat Mohammad Reza Badiee Evaluation of the Shear Bond Strength and Antibacterial Activity of Orthodontic Adhesive Containing Silver Nanoparticle, an In-Vitro Study Nanomaterials antibacterial remineralization shear bond strength orthodontics silver nanoparticles adhesive remnant index |
author_facet |
Ladan Eslamian Ali Borzabadi-Farahani Shahedeh Karimi Sepideh Saadat Mohammad Reza Badiee |
author_sort |
Ladan Eslamian |
title |
Evaluation of the Shear Bond Strength and Antibacterial Activity of Orthodontic Adhesive Containing Silver Nanoparticle, an In-Vitro Study |
title_short |
Evaluation of the Shear Bond Strength and Antibacterial Activity of Orthodontic Adhesive Containing Silver Nanoparticle, an In-Vitro Study |
title_full |
Evaluation of the Shear Bond Strength and Antibacterial Activity of Orthodontic Adhesive Containing Silver Nanoparticle, an In-Vitro Study |
title_fullStr |
Evaluation of the Shear Bond Strength and Antibacterial Activity of Orthodontic Adhesive Containing Silver Nanoparticle, an In-Vitro Study |
title_full_unstemmed |
Evaluation of the Shear Bond Strength and Antibacterial Activity of Orthodontic Adhesive Containing Silver Nanoparticle, an In-Vitro Study |
title_sort |
evaluation of the shear bond strength and antibacterial activity of orthodontic adhesive containing silver nanoparticle, an in-vitro study |
publisher |
MDPI AG |
series |
Nanomaterials |
issn |
2079-4991 |
publishDate |
2020-07-01 |
description |
This study evaluated the effect of incorporating silver nanoparticles (AgNPs) into conventional orthodontic adhesive on its antibacterial activity and the shear bond strength (SBS) to stainless steel orthodontic brackets. Thirty-four extracted premolars were randomly allocated into two groups (<i>n</i> = 17). Orthodontic adhesive (Transbond XT, 3M Unitek) was blended with AgNPs (50 nm, 0.3% <i>w</i>/<i>w</i>) to form a nano-adhesive. In order to bond stainless steel twin brackets (0.022-inch, American Orthodontics), Transbond XT (<i>n</i> = 17) and nano-adhesive (<i>n</i> = 17) were used in each group, respectively, after acid etching (37% phosphoric acid, 30 s) and rinsing with water (15 s). SBS and the adhesive remnant index (ARI) scores were recorded. Antibacterial activity against <i>Streptococcus mutans</i> in both groups after 24 h and 30 days was assessed (Disc agar diffusion test) and the inhibition zone diameter around each specimen was measured and recorded. Adding AgNPs significantly (<i>p</i> = 0.009) reduced the mean (SD) SBS in the nano-adhesive group [10.51(7.15) MPa] compared to Transbond XT [17.72(10.55) MPa]. The ARI scores on the Transbond XT and nano-adhesive showed no statistically significant difference (<i>p</i> = 0.322). Nano-adhesive with AgNPs showed significant antibacterial activity against <i>Streptococcus mutans</i> at 24 h and 30 days (<i>p</i> < 0.001). In both groups, no significant decline in the zones of inhibition was detected after 30 days (<i>p</i> = 0.907). The findings suggest that SBS decreased after incorporation of AgNPs [0.3% (<i>w/w</i>)], but was still above the recommended SBS of 5.9–7.8 MPa. The nano-adhesive showed significant antibacterial activity which did not change much after 30 days. |
topic |
antibacterial remineralization shear bond strength orthodontics silver nanoparticles adhesive remnant index |
url |
https://www.mdpi.com/2079-4991/10/8/1466 |
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