Publication: Effect of an acrylic resin combined with an antimicrobial polymer on biofilm formation
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Date
Advisor
Coadvisor
Graduate program
Undergraduate course
Journal Title
Journal ISSN
Volume Title
Publisher
Universidade de São Paulo (USP), Faculdade de Odontologia de Bauru
Type
Article
Access right
Acesso aberto
Abstract
Objectives: The purpose of this study was to evaluate the antimicrobial activity of an acrylic resin combined with an antimicrobial polymer poly (2-tert-butylaminoethyl) methacrylate (PTBAEMA) to inhibit Staphylococcus aureus, Streptococcus mutans and Candida albicans biofilm formation. Material and Methods: Discs of a heat-polymerized acrylic resin were produced and divided according to PTBAEMA concentration: 0 (control), 10 and 25%. The specimens were inoculated (10(7) CFU/mL) and incubated at 37 degrees C for 48 h. After incubation, the wells were washed and each specimen was sonicated for 20 min. Replicate aliquots of resultant suspensions were plated at dilutions at 37 degrees C for 48 h. The number of colony-forming units (CFU) was counted and expressed as log (CFU+1)/mL and analyzed statistically with alpha=.05. Results: The results showed that 25% PTBAEMA completely inhibited S. aureus and S. mutans biofilm formation. A significant reduction of log (CFU+1)/mL in count of S. aureus (control: 7.9 +/- 0.8A; 10%: 3.8 +/- 3.3B) and S. mutans (control: 7.5 +/- 0.7A; 10%: 5.1 +/- 2.7B) was observed for the group containing 10% PTBAEMA (Mann-Whitney, p < 0.05). For C. albicans, differences were not significant among the groups (control: 6.6 +/- 0.2A; 10%: 6.6 +/- 0.4A; 25%: 6.4 +/- 0.1A), (Kruskal-Wallis, p>0.05, P=0.079). Conclusions: Acrylic resin combined with 10 and 25% of PTBAEMA showed significant antimicrobial activity against S. aureus and S. mutans biofilm, but it was inactive against the C. albicans biofilm.
Description
Keywords
Acrylic resins, Biofilms, Polymers, Dental materials
Language
English
Citation
Journal of Applied Oral Science. Bauru-sp: Univ São Paulo Fac Odontologia Bauru, v. 20, n. 6, p. 643-648, 2012.
