Abstract

Biosafety in dentistry aims to combat cross-contamination and biofilm in dental unit waterlines. The aim was to investigate from a physical, chemical, mechanical and biological perspective, a protocol for using chemical products (citric acid, sodium bicarbonate and sodium chloride) to improve and maintain water quality in dental unit waterlines. Change in microhardness and corrosion tendency were observed in stainless steel samples. On the polyurethane surfaces, there were changes in color, microhardness and roughness. Anti-biofilm evaluations revealed a significant reduction in the biofilm biomass, metabolic activity and residual biofilm. These findings suggest that the protocol analyzed in this study showed an innovative potential against biofilm in dental unit waterlines, preserving the physical, chemical and mechanical properties of the materials.

摘要

牙科生物安全旨在对抗牙科单元水线中的交叉污染和生物膜。目的是从物理、化学、机械和生物学的角度研究使用化学产品（柠檬酸、碳酸氢钠和氯化钠）改善和维持牙科治疗室水线水质的方案。在不锈钢样品中观察到显微硬度和腐蚀趋势的变化。在聚氨酯表面上，颜色、显微硬度和粗糙度都有变化。抗生物膜评估显示生物膜生物量、代谢活性和残留生物膜显着减少。这些发现表明，本研究中分析的方案显示出针对牙科单元水线中生物膜的创新潜力，保留了物理、