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Revista de otorrinolaringología y cirugía de cabeza y cuello

versão On-line ISSN 0718-4816

Resumo

BRAVO C, Gustavo et al. Design and evaluation of antibacterial properties of a prototype of earmold with copper incorporated in the manufacture. Rev. Otorrinolaringol. Cir. Cabeza Cuello [online]. 2016, vol.76, n.3, pp.255-264. ISSN 0718-4816.  http://dx.doi.org/10.4067/S0718-48162016000300002.

Introduction: External otitis of infectious etiology among hearing aid users is a common motive of otolaryngology consultation. Antibacterial properties described copper, they have motivated the development of clinical applications of this metal. Aim: Evaluate the antibacterial capacity of copper-based ear molds manufactured with different materials such UV sensitive polymers, silicone and acrylic incorporating metallic copper, in an experimental system in vitro. Material and method: Ear molds with and without copper, were inoculated with different concentrations of microorganisms (S aureus and P aeruginosa) and determine the percentage of bacterial adherence to different contact times (4-8 and 12 hours). Results: There was significant reduction in bacterial adhesion to copper molds than those without copper, independent of the material, the type of microorganism and the bacterial inoculum. Discussion: The decrease in bacterial adherence on prototypes with copper, can be attributed to inhibitory activity on microorganisms depending on their concentration and contact time, exerting its effect by diffusion through the various materials. Conclusion: With these results, is necessary the development of clinical studies focused on checking whether the use of hearing aids with copper decreases external otitis of infectious origin.

Palavras-chave : Copper; earmolds; external otitis.

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