Corrosion Behaviors of Disinfectants on Dental Unit Waterlines  

作　　者：张玲 QIU Jiajun 邢敏 钱文昊 ZHANG Ling;QIU Jiajun;XING Min;QIAN Wenhao(Shanghai Xuhui District Dental Center,Shanghai,200032,China;State Key Laboratory of High Performance Ceramics and Superfine Microstructure,Shanghai Institute of Ceramics,Chinese Academy of Sciences,Shanghai,200050,China)

机构地区：[1]Shanghai Xuhui District Dental Center,Shanghai,200032,China [2]State Key Laboratory of High Performance Ceramics and Superfine Microstructure,Shanghai Institute of Ceramics,Chinese Academy of Sciences,Shanghai,200050,China

出　　处：《Journal of Wuhan University of Technology(Materials Science)》2023年第4期938-941,共4页武汉理工大学学报（材料科学英文版）

基　　金：Funded by the Xuhui District Medical Research Project(No.SHXH201913);the Clinical Research on Health Industry of Shanghai Municipal Health Commission(No.202040085);the Shanghai Medical Key Specialty(No.ZK2019B12);the National Natural Science Foundation of China(No.32000945)。

摘　　要：To investigate the corrosion behaviors and antibacterial effects of sodium hypochlorite(NaClO)and hydrogen peroxide silver ion(HPSI)disinfectants with different concentrations against dental unit waterlines and provide guidance and reference for the use of chemical disinfectants,polyurethane tubes were immersed in ultrapure water(control group),0.1%NaClO,0.5%NaClO,1.0%NaClO,2.5%HPSI,5.0%HPSI,and 10%HPSI solutions for 6,12,and 18 weeks.Contact angles and Fourier transform infrared spectra were detected.Surface morphologies were observed using scanning electron microscopy and antibacterial activity was evaluated using Gram-positive Staphylococcus aureus(S.aureus).The results showed that sodium hypochlorite and hydrogen peroxide silver ion disinfectants presented good antibacterial activity against S.aureus.However,sodium hypochlorite could cause serious damage to the water pipes where corrosion pits and cracks were observed,and increasing the concentration of sodium hypochlorite could accelerate the corrosion process.Hydrogen peroxide silver ion disinfectants had no obvious damage to the water pipes.Therefore,hydrogen peroxide silver ion disinfectants are recommended to use for controlling bacterial infection in dental unit waterlines which can reduce the damage to the water pipes.

关 键 词：DISINFECTANT dental unit waterlines sodium hypochlorite hydrogen peroxide silver ion 

分 类 号：TH787.1[机械工程—仪器科学与技术]