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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| Format: | Article |
| Language: | English |
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MDPI AG
2021-12-01
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| Series: | Water |
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| Online Access: | https://www.mdpi.com/2073-4441/13/23/3442 |
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| author | Li-Lin Wei Chan-Chih Hu Chu-Wei Hsu Chun-Wei Pen Li-Yu Chen Yu-Chun Yu James R. Carey Hao-Chang Yin Shan-Shue Wang |
| author_facet | Li-Lin Wei Chan-Chih Hu Chu-Wei Hsu Chun-Wei Pen Li-Yu Chen Yu-Chun Yu James R. Carey Hao-Chang Yin Shan-Shue Wang |
| author_sort | Li-Lin Wei |
| collection | DOAJ |
| description | 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 ClO<sub>2</sub> 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. |
| first_indexed | 2024-03-10T04:42:15Z |
| format | Article |
| id | doaj.art-1a2e469370584d0d89fe4d86a4235cf8 |
| institution | Directory Open Access Journal |
| issn | 2073-4441 |
| language | English |
| last_indexed | 2024-03-10T04:42:15Z |
| publishDate | 2021-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Water |
| spelling | doaj.art-1a2e469370584d0d89fe4d86a4235cf82023-11-23T03:15:43ZengMDPI AGWater2073-44412021-12-011323344210.3390/w13233442Disinfection of Dental Chair Water Using Aqueous Chlorine DioxideLi-Lin Wei0Chan-Chih Hu1Chu-Wei Hsu2Chun-Wei Pen3Li-Yu Chen4Yu-Chun Yu5James R. Carey6Hao-Chang Yin7Shan-Shue Wang8Lian Medical Protection Equipment Co., Ltd., Kaohsiung 813328, TaiwanGuangdong ZD Aquatic Environmental Technology Co., Ltd., Zhongshan 528411, ChinaDepartment of Cosmetology and Health Care, Kao Yuan University, Kaohsiung 821013, TaiwanDepartment of Cosmetology and Health Care, Kao Yuan University, Kaohsiung 821013, TaiwanUndergraduate program of Electro-Optical Engineering, National Taiwan Normal University, Taipei 10610, TaiwanBaihui Mercury Environmental Technology (Beijing) Co., Ltd., Beijing 100144, ChinaAce Glass, Inc., Vineland, NJ 08360, USADepartment of Cosmetology and Health Care, Kao Yuan University, Kaohsiung 821013, TaiwanDepartment of Cosmetology and Health Care, Kao Yuan University, Kaohsiung 821013, TaiwanChlorine 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 ClO<sub>2</sub> 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.https://www.mdpi.com/2073-4441/13/23/3442chlorine dioxideORPautomatic monitoring and managementhygiene |
| spellingShingle | Li-Lin Wei Chan-Chih Hu Chu-Wei Hsu Chun-Wei Pen Li-Yu Chen Yu-Chun Yu James R. Carey Hao-Chang Yin Shan-Shue Wang Disinfection of Dental Chair Water Using Aqueous Chlorine Dioxide Water chlorine dioxide ORP automatic monitoring and management hygiene |
| title | Disinfection of Dental Chair Water Using Aqueous Chlorine Dioxide |
| title_full | Disinfection of Dental Chair Water Using Aqueous Chlorine Dioxide |
| title_fullStr | Disinfection of Dental Chair Water Using Aqueous Chlorine Dioxide |
| title_full_unstemmed | Disinfection of Dental Chair Water Using Aqueous Chlorine Dioxide |
| title_short | Disinfection of Dental Chair Water Using Aqueous Chlorine Dioxide |
| title_sort | disinfection of dental chair water using aqueous chlorine dioxide |
| topic | chlorine dioxide ORP automatic monitoring and management hygiene |
| url | https://www.mdpi.com/2073-4441/13/23/3442 |
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