Disinfection of Dental Chair Water Using Aqueous Chlorine Dioxide

Chlorine dioxide is a safe, environmentally friendly disinfecting agent. In this study, aqueous chlorine dioxide (ACD) was used to improve the water quality of dental chairs. However, chlorine dioxide is readily released from ACD solutions under open atmosphere conditions. Described herein is a wate...

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Bibliographic Details
Published in:Water (Basel) 2021-12, Vol.13 (23), p.3442
Main Authors: Wei, Li-Lin, Hu, Chan-Chih, Hsu, Chu-Wei, Pen, Chun-Wei, Chen, Li-Yu, Yu, Yu-Chun, Carey, James R., Yin, Hao-Chang, Wang, Shan-Shue
Format: Article
Language:English
Subjects:
Aqueous solutions
Bacteria
Beverages
Biofilms
Chlorine
Chlorine dioxide
Clinics
Cosmetics
Dental materials
Disinfection
Disinfection & disinfectants
Dosage
Infections
Odors
Oxidation
Oxidation-reduction potential
Sensors
Sodium
Water purification
Water quality
Water supply
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Summary:Chlorine dioxide is a safe, environmentally friendly disinfecting agent. In this study, aqueous chlorine dioxide (ACD) was used to improve the water quality of dental chairs. However, chlorine dioxide is readily released from ACD solutions under open atmosphere conditions. Described herein is a water purification and disinfection system using ACD. The system was designed, fabricated, and integrated into an existing dental chair water system. This system is referred to as an ACD dental chair. Because ClO2 readily degasses from ACD, there needs to be a way to maintain and measure the ACD solution in real time. In our studies, we found that pH and oxidation-reduction potential (ORP) change as a function of chlorine dioxide concentration and are easily controlled and measured. The dosing of the ACD was designed to begin at 800 mV and stop dosing at 810 mV in the ACD dental chair. Through use of this continuous monitoring and automatic dosing system, the water ORP was controlled between 800 and 860 mV. This range is the effective concentration of chlorine dioxide that is without chlorine-like odor and microorganism growth. The ACD dental chair controlled the total bacterial count to
ISSN:2073-4441
2073-4441
DOI:10.3390/w13233442