Antimicrobial effect of slightly acidic electrolyzed water on oral microorganisms / 대한구강보건학회지

OBJECTIVES: The purpose of this study was to evaluate the antibacterial effect of slightly acidic electrolyzed water (SAEW) for use as a mouth-rinse on seven oral pathogens. METHODS: In this study, SAEW with a pH of 6.2, oxidation-reduction potential of 728-800 mV, and available chlorine concentration of 30 mg/L was produced by electrolysis using an electrolysis device. The antimicrobial properties of SAEW against seven oral pathogens were determined by the agar diffusion method, minimum inhibitory concentration (MIC), minimum bactericidal concentration (MBC), and mouth rinsing tests. RESULTS: SAEW did not demonstrate any antimicrobial activity (disc diffusion method) against the seven oral pathogens under study. However, SAEW showed potent antimicrobial activity with an MIC value of 0.0075-0.015 mg/mL and a MBC value of 0.015-0.03 mg/mL. Mouth rinsing with SAEW showed 99.9% bacterial inhibition. CONCLUSIONS: SAEW exhibited potent antimicrobial activity against all oral pathogens causing dental caries and periodontal disease. Therefore, the results of this study suggest that SAEW can be used as an effective mouth-rinse to prevent oral diseases and for oral hygiene management, with potential for commercial application.

Comparative Study of Glutaraldehyde and Electrolyzed Acid Water on the Disinfection of the Soft Endoscope:120 Cases Analysis / 中华医院感染学杂志

OBJECTIVE To compare the effects of Glutaraldehyde(GA) and Electrolyzed Acid Water(EAW) on the disinfection of the soft endoscope.METHODS The field tests for the digestive endoscope disinfection: GA group,a total of 60 cases(Gastroscopy 43 cases,17 cases of colonoscopy);EAW group,totaling 60 cases(37 cases of gastroscopy,colonoscopy 23).RESULTS None of samples from both groups was positive for test of bacterial culture.GA group had a more time comsumption than EAW group(20.6 VS 10.4,P

Disinfection Efficacy of a New Endoscope Reprocessing System Using Electrolyzed Acid Water: An In-Use Evaluation / 감염

BACKGROUND: Electrolyzed acid water (EAW) is a new liquid chemical germicide containing a mixture of oxidizing species and prepared by mixing a small amount of salt with tap water in an electrolyzer. We attempted an in-use evaluation of the high-level disinfection capability of Cleantop WM-1 , a new endoscope reprocessing system using EAW. METHODS: Forty-seven flexible endoscopes were randomly collected just after upper endoscopic examinations and were disinfected using Cleantop WM-1 . Parts of the endoscopes without contact to EAW were disinfected with 75% ethyl alcohol. Immediately after the disinfection procedure, samples were taken from the biopsy channel (S-1), tip of the insertion tube (S- 2), the umbilical cord (S-3), and the angulation knob (S-4). RESULTS: In EAW-disinfected parts of the endoscopes, the culture-positive rates were 4.3% (2/47) in S-1 samples and 12.8% (6/47) in S-2 samples. In ethyl alcohol-disinfected area, the culture-positive rates were 2.1% (1/47) in S-3 samples and 25.5% (12/47) in S-4 samples. The colony counts of culture-positive samples ranged from 1 to 144. Pseudomonas aeruginasa was recovered from the angulation knob of an endoscope, but other contaminating organisms were mostly: normal flora or opportunistic pathogens. CONCLUSOIN: Although parts of the endoscopes disinfected with 75% ethyl alcohol were contaminated with more organisms than EAW-disinfected areas, Cleantop WM-1 showed a relatively good disinfection efficacy in reprocessing patient-used endoscopes.

Antimicrobial and clinical effects of mouthrinses of acid water prepared by an electrolysis apparatus on chronic periodontitis / 대한치주과학회지

The purpose of this study was to assess the antimicrobial and clinical effects of acid water mouthrinse prepared by an electrolysis apparatus on chronic periodontitis and to evaluate the lasting period of these effects. The change in the pattern of colonization of bacteria within the subgingival pockets was monitored by phase contrast microscopy, in 40 patients, over a period of 8 weeks. In addition, changes in the clinical parameters of the diseased sites were also monitored. Site of pocket > or = 5mm was selected in each patient randomly divided into two groups. As a test group, acid water mouthrinse was used twice a day in 20 patients. As control, no mouthrinse was used in 20 patients The results were as follows: 1. The suppression of motile bacteria was maintained for up to 3-4 weeks at test group. 2. Two groups did not differ significantly in proportion of bacteria in subgingival plaque over a period of 8 weeks. 3. Loss of attachment showed a significant difference in test group and in test group compared with control group (P<0.05), but there was no significant difference in control group. 4. No statistical difference was shown in two groups concerning the gingival index, plaque index, bleeding index. The results suggest that acid water mouthrinse is effective for reducing subgingival bacteria. It can be concluded that acid water may be useful as an mouthrinsing agent.