00000ctm a22000003a 4500 UP-1685523046126355574 Buklod 20230301143946.0 m |o d | cr ||||||||||| 230301s2022 xx d r |||| u| (iLib)UPMNL-00017456969 UPDent rda eng LG993.5 2022 D4 A45 Algarne, Wilgem O. author A comparison of the efficacies between E20 dental waterline treatment and a homemade cost-effective 2% hydrogen peroxide solution as dental unit waterline disinfectants in the UP College of Dentistry Clinics Wilgem O Algarne, Marco Emmanuel S. Bermejo and Kerwin P. Lim. Manila Department of Community Dentistry, University of the Philippines Manila c2022. 128 leaves color illustrations 28 cm. text rdacontent unmediated rdamedia volume rdacarrier Seminar Paper--Doctor of Dental Medicine--University of the Philippines Manila Yes Yes N/A INTRODUCTION:The dental unit waterline (DUWL) is a source of infection in dental clinics that must be controlled by chemical or non-chemical means. Multiple studies have proven that hydrogen peroxide disinfectants lower bacterial counts in DUWLs. OBJECTIVE: This study aims to compare the efficacies between E2O, a branded DUWL cleaner, and a homemade cost-effective solution of 2% hydrogen peroxide in reducing the DUWL heterotrophic bacterial counts of the clinical sections in the UP College of Dentistry (UPCD). METHODS: Six randomly selected dental units and their DUWLs from the three sections (n=18) of the UPCD clinics were divided into two groups, E2O Treatment and 2% hydrogen peroxide solution. The DUWLs were flushed for 2 minutes with distilled water and pre-test samples were collected. E2O and the 2% hydrogen peroxide solutions were then run through the DUWLs, left overnight, and collected the next day as post-test samples. Samples were spread-plated on R2A agar, incubated at 30±2ºC for 7 days, and heterotrophic bacterial counts were determined. The Wilcoxon Rank Sum test was used to determine if the disinfectants were able to reduce bacterial counts to the Centers of Disease Control water standard of ≤500 CFU/mL. RESULTS: E2O and hydrogen peroxide had mean bacterial count reductions of 53% and 45.53% respectively with mean post-test bacterial counts of 1,401 CFU/mL and 1,616 CFU/mL respectively. CONCLUSION: It is inconclusive to state that E2O Dental Waterline Treatment is more efficacious than the homemade cost-effective 2% hydrogen peroxide solution or vice versa. More research is recommended to conclude that these cleaners can reduce bacteria counts in DUWLs when used regularly. Hydrogen peroxide. Bermejo, Marco Emmanuel author. Lim, Kerwin P. author. Mendoza, Michael Antonio technical adviser and co-author. UPMNL DENT LG993.5 2022 D4 A45 Thesis