Soft Liner with antimicrobial activity

Authors

  • Simone Kreve Universidade de São Paulo. Faculdade de Odontologia de Ribeirão Preto https://orcid.org/0000-0001-5599-4450
  • Carla Larissa Vidal Universidade de São Paulo. Faculdade de Odontologia de Ribeirão Preto
  • Oswaldo Luiz Alves Universidade Estadual de Campinas
  • Andréa Cândido dos Reis Universidade de São Paulo. Faculdade de Odontologia de Ribeirão Preto

DOI:

https://doi.org/10.11606/issn.2357-8041.clrd.2020.169582

Keywords:

Denture Liners, Nanotechnology, Mechanical Properties, Polymers

Abstract

Objective: To develop a material for denture relining and assess the microbiological and mechanical properties. The proposed liner was obtained through the incorporation of nanostructured silver vanadate (AgVO3) at 0, 1, 2.5, 5, and 10% polyethyl methacrylate (PEMA) containing plasticizer. Methods: Antimicrobial efficacy was evaluated by the Kirby Bauer agar method against Enterococcus faecalis, Pseudomonas aeruginosa, Candida albicans and Staphyloccocus aureus (n = 5); and mechanical properties were also assessed through roughness, such as Shore A hardness and tensile test. The results were analyzed by ANOVA and Tukey’s Multiple Comparison test (α = 0.05). Results: The material with AgVO3 at concentrations of 1% and 2.5% showed antimicrobial activity for E. faecalis, and 5% and 10% groups were effective for E. faecalis, P. aeruginosa and C. albicans. In the 5% group, hardness remained unchanged (p < 0.001). None of the tested concentrations significantly changed the roughness and the tensile strength (P > 0.05). Conclusion: Obtaining the material with antimicrobial potential promoted efficacy against E. faecalis, P. aeruginosa and C. albicans, kept the roughness property unchanged, did not change the adhesion property of the material to polymethyl methacrylate, and it maintained the hardness values compatible with resilient denture liners.

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Author Biographies

Simone Kreve, Universidade de São Paulo. Faculdade de Odontologia de Ribeirão Preto

Departamento de Materiais Dentários e Prótese da Faculdade de Odontologia de Ribeirão Preto, Universidade de São Paulo (Forp-USP), Ribeirão Preto (SP), Brasil

Carla Larissa Vidal, Universidade de São Paulo. Faculdade de Odontologia de Ribeirão Preto

Departamento de Materiais Dentários e Prótese da Faculdade de Odontologia de Ribeirão Preto – Universidade de São Paulo (Forp-USP), Ribeirão Preto (SP), Brasil

Oswaldo Luiz Alves, Universidade Estadual de Campinas

Laboratório de Química do Estado Sólido, Universidade Estadual de Campinas (Unicamp), Campinas (SP), Brasil

Andréa Cândido dos Reis, Universidade de São Paulo. Faculdade de Odontologia de Ribeirão Preto

Departamento de Materiais Dentários e Prótese, Faculdade de Odontologia de Ribeirão Preto, Universidade de São Paulo (Forp-USP), Ribeirão Preto (SP), Brasil

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Published

2020-09-24

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Section

Original Research