The effect of the use of disinfectants during COVID-۱۹ pandemic on the bacterial contamination of dental unit waterlines
Publish Year: 1401
نوع سند: مقاله ژورنالی
زبان: English
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شناسه ملی سند علمی:
JR_EHEM-9-3_006
تاریخ نمایه سازی: 9 مهر 1401
Abstract:
Background: The emergence and spread of SARS-CoV-۲ has increased environmental disinfectant usage to reduce the transmission of this virus. Ethanol ۷۰-۹۰% and ۵% sodium hypochlorite have the highest consumption for disinfection of various environmental surfaces during the COVID-۱۹ pandemic. Dental unit waterlines (DUWLs) are more susceptible to microbial contamination due to their particular structure. This study aimed to investigate the effect of increasing the use of disinfectants during the COVID-۱۹ pandemic on the bacterial contamination of DUWLs.
Methods: During November (before the COVID-۱۹ pandemic) and December (during the COVID-۱۹ pandemic), a questionnaire was used to assess the frequency of disinfection of unit surfaces and other environmental surfaces and the type of disinfectants used. The water samples were collected from different parts of DUWLs. The gram staining method followed by the biochemical method was used to identify the desired bacteria.
Results: The results showed that the frequency of disinfection of dental units increased ۸ times in December compared to November. There is a significant inverse relationship between the frequency of disinfection of dental units surfaces and the bacterial contamination of dental unit waterlines.
Conclusion: The microbial load in different parts of the DUWLs was less than ۲۰۰ CFU/mL. The American Dental Association (ADA) recommended and indicated the allowable microbial concentration and the appropriate quality and water used in these units.
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Authors
Neematollah Jaafarzadeh Haghighi Fard
Environmental Technologies Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
Sahand Jorfi
Environmental Technologies Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
Masoud Panahi Fard
Corresponding author: Student Research Committee, Department of Environmental Health Engineering, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
Maneli Ardashir Zadeh
School of Dentistry, LOMA LINDA University, California, USA, CA ۹۲۳۵۰, Loma Linda School of Dentistry, California, America
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