Antifungal biomaterial for reducing infections caused by Candida albicans in edentulous patients.

Introduction: Polymethylmethacrylate (PMMA) acrylic resins are used to make dentures for edentulous patients.

Objective: To find out the prevalence of Candida species in patients with and without removable prostheses from a dental clinic in León, Guanajuato, as well as to assess the antifungal effect and biological behavior of an experimental PMMA with silver nanoparticles for its possible application in prostheses.

Method: To identify Candida species, smear samples were obtained from the palatal mucosa of 140 patients aged ≥ 60 years.

Toxicity and antimicrobial effect of silver nanoparticles in swine sperms.

Unlabelled: Bacterial contamination in swine semen affects the quality and longevity of sperm and consequently fertility is reduced. Antibiotics have been used to prevent bacterial growth, but the frequency of bacterial resistance to various antibiotics are increasing. Silver nanoparticles (AgNPs) of 10-20 nm in size have shown a biocide effect in bacteria and fungi microorganisms without toxicity to certain mammalian cells.