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Effect of silver nanoparticles on the physicochemical and antimicrobial properties of an orthodontic adhesive
DEGRAZIA, Felipe Weidenbach; LEITUNE, Vicente Castelo Branco; GARCIA, Isadora Martini; ARTHUR, Rodrigo Alex; SAMUEL, Susana Maria Werner; COLLARES, Fabrício Mezzomo.
  • DEGRAZIA, Felipe Weidenbach; Universidade Federal do Rio Grande do Sul. Faculdade de Odontologia. Laboratório de Materiais Odontológicos. Porto Alegre. BR
  • LEITUNE, Vicente Castelo Branco; Universidade Federal do Rio Grande do Sul. Faculdade de Odontologia. Laboratório de Materiais Odontológicos. Porto Alegre. BR
  • GARCIA, Isadora Martini; Universidade Federal do Rio Grande do Sul. Faculdade de Odontologia. Laboratório de Materiais Odontológicos. Porto Alegre. BR
  • ARTHUR, Rodrigo Alex; Universidade Federal do Rio Grande do Sul. Faculdade de Odontologia. Laboratório de Materiais Odontológicos. Porto Alegre. BR
  • SAMUEL, Susana Maria Werner; Universidade Federal do Rio Grande do Sul. Faculdade de Odontologia. Laboratório de Materiais Odontológicos. Porto Alegre. BR
  • COLLARES, Fabrício Mezzomo; Universidade Federal do Rio Grande do Sul. Faculdade de Odontologia. Laboratório de Materiais Odontológicos. Porto Alegre. BR
J. appl. oral sci ; 24(4): 404-410, July-Aug. 2016. tab, graf
Article in English | LILACS, BBO | ID: lil-792598
ABSTRACT
ABSTRACT Orthodontic treatment with fixed brackets plays a major role on the formation of white spot lesions. Objective This study aimed to incorporate silver nanoparticle solutions (AgNP) in an orthodontic adhesive and evaluate its physicochemical and antimicrobial properties. Material and Methods Silver nanoparticle solutions were added to a commercial adhesive in different concentrations (w/w) 0%, 0.11%, 0.18%, and 0.33%. Shear bond strength (SBS) test was performed after bonding metal brackets to enamel. Raman spectroscopy was used to analyze in situ the degree of conversion (DC) of the adhesive layer. The surface free energy (SFE) was evaluated after the measurement of contact angles. Growth inhibition of Streptococcus mutans in liquid and solid media was determined by colony-forming unit count and inhibition halo, respectively. One-way ANOVA was performed for SBS, DC, SFE, and growth inhibition. Results The incorporation of AgNP solution decreased the SBS (p<0.001) and DC in situ (p<0.001) values. SFE decreased after addition of 0.18% and 0.33% AgNP. Growth inhibition of S. mutans in liquid media was obtained after silver addition (p<0.05). Conclusions The addition of AgNP solutions to Transbond™ XT adhesive primer inhibited S. mutans growth. SBS, DC, and SFE values decreased after incorporation up to 0.33% AgNP solution without compromising the chemical and physical properties of the adhesive.
Subject(s)


Full text: Available Index: LILACS (Americas) Main subject: Silver / Streptococcus mutans / Composite Resins / Dental Cements / Metal Nanoparticles / Anti-Bacterial Agents Type of study: Evaluation studies Limits: Animals Language: English Journal: J. appl. oral sci Journal subject: Dentistry Year: 2016 Type: Article Affiliation country: Brazil Institution/Affiliation country: Universidade Federal do Rio Grande do Sul/BR

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Full text: Available Index: LILACS (Americas) Main subject: Silver / Streptococcus mutans / Composite Resins / Dental Cements / Metal Nanoparticles / Anti-Bacterial Agents Type of study: Evaluation studies Limits: Animals Language: English Journal: J. appl. oral sci Journal subject: Dentistry Year: 2016 Type: Article Affiliation country: Brazil Institution/Affiliation country: Universidade Federal do Rio Grande do Sul/BR