| Autor: |
Dallalana ES; Human Exposome and Infectious Diseases Network (HEID), School of Nursing of Ribeirão Preto, University of São Paulo., Monteiro RM; Human Exposome and Infectious Diseases Network (HEID), School of Nursing of Ribeirão Preto, University of São Paulo., Oliveira VC; Human Exposome and Infectious Diseases Network (HEID), School of Nursing of Ribeirão Preto, University of São Paulo.; Department of Dental Materials and Prostheses, School of Dentistry of Ribeirão Preto, University of São Paulo., Bim FL; Human Exposome and Infectious Diseases Network (HEID), School of Nursing of Ribeirão Preto, University of São Paulo., Bim LL; Human Exposome and Infectious Diseases Network (HEID), School of Nursing of Ribeirão Preto, University of São Paulo., Castro DT; Department of Biomaterials, School of Dentistry of Uberaba, University of Uberaba., Macedo AP; Department of Dental Materials and Prostheses, School of Dentistry of Ribeirão Preto, University of São Paulo., Watanabe E; Human Exposome and Infectious Diseases Network (HEID), School of Nursing of Ribeirão Preto, University of São Paulo.; Department of Restorative Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo. |
| Abstrakt: |
This study investigated the effect of water at high temperature on the physical and mechanical properties of polyurethane and on biofilm removal, aiming for its applicability in dental unit waterlines. The evaluations were carried out after simulating a 1-year period of daily immersion and measured changes in color, microhardness, surface roughness, and tensile strength before and after reproducing a disinfection protocol. For antibiofilm activity measurement, fragments of waterline were contaminated with Pseudomonas aeruginosa and submitted to the disinfection protocols. Relative to effects on the physical and mechanical properties, immersion in water at 60°C did not promote changes in color and tensile strength. However, lower values were observed for microhardness and increased values for surface roughness. Regarding antibiofilm action, water at 60°C significantly reduced the microbial load and promoted substantial changes in cells morphology. In conclusion, disinfection with water at 60°C demonstrated possible application in controlling cross-contamination in dentistry. |
