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Disinfection of Dental Chair Water Using Aqueous Chlorine Dioxide

Lian Medical Protection Equipment Co., Ltd., Kaohsiung 813328, Taiwan
Guangdong ZD Aquatic Environmental Technology Co., Ltd., Zhongshan 528411, China
Department of Cosmetology and Health Care, Kao Yuan University, Kaohsiung 821013, Taiwan
Undergraduate program of Electro-Optical Engineering, National Taiwan Normal University, Taipei 10610, Taiwan
Baihui Mercury Environmental Technology (Beijing) Co., Ltd., Beijing 100144, China
Ace Glass, Inc., Vineland, NJ 08360, USA
Authors to whom correspondence should be addressed.
Academic Editors: Efthimia A. Kaprara and Jiangyong Hu
Water 2021, 13(23), 3442;
Received: 15 October 2021 / Revised: 27 November 2021 / Accepted: 2 December 2021 / Published: 4 December 2021
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 <5 CFU/mL and the chlorite concentration was less than 0.0004 mg/L, meeting legal standards of Taiwan, the USA, and China. In addition to the application of ACD in dental chairs, it may also be used in closed water systems for food, cosmetics, beverages, and other industries. View Full-Text
Keywords: chlorine dioxide; ORP; automatic monitoring and management; hygiene chlorine dioxide; ORP; automatic monitoring and management; hygiene
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MDPI and ACS Style

Wei, L.-L.; Hu, C.-C.; Hsu, C.-W.; Pen, C.-W.; Chen, L.-Y.; Yu, Y.-C.; Carey, J.R.; Yin, H.-C.; Wang, S.-S. Disinfection of Dental Chair Water Using Aqueous Chlorine Dioxide. Water 2021, 13, 3442.

AMA Style

Wei L-L, Hu C-C, Hsu C-W, Pen C-W, Chen L-Y, Yu Y-C, Carey JR, Yin H-C, Wang S-S. Disinfection of Dental Chair Water Using Aqueous Chlorine Dioxide. Water. 2021; 13(23):3442.

Chicago/Turabian Style

Wei, Li-Lin, Chan-Chih Hu, Chu-Wei Hsu, Chun-Wei Pen, Li-Yu Chen, Yu-Chun Yu, James R. Carey, Hao-Chang Yin, and Shan-Shue Wang. 2021. "Disinfection of Dental Chair Water Using Aqueous Chlorine Dioxide" Water 13, no. 23: 3442.

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