Home Subscription Services
 
   

 
Quintessence International
QI Home Page
About the Editor
Editorial Board
Accepted Manuscripts
Submit
Author Guidelines
Submission Form
Reprints / Articles
Permissions
Advertising
MEDLINE Search
 
 
 
 
 
FacebookTwitterYouTube
Quintessence Publishing: Journals: QI
Quintessence International

Edited by Eli Eliav

ISSN 0033-6572 (print) • ISSN 1936-7163 (online)

Publication:
September 2004
Volume 35 , Issue 8

Back
Share Abstract:

Reduction of bacterial levels in dental unit waterlines

Nuala B. Porteous, BDS, MPH/Robert L. Cooley, DMD, MS

Pages: 630-634
PMID: 15366526

Objectives: To test the efficacy of an intermittent use, dental unit waterline cleaner, containing 0.12% chlorhexidine, in a proprietary formulation, to reduce bacterial levels in three functioning dental units with independent water reservoir systems. Method and materials: Baseline water samples were first taken from six units. Two ounces of the undiluted test product was run through lines, left overnight, and flushed out the next morning. This was repeated for 6 nights initially, and once a week thereafter for 12 weeks. Three control dental units did not have chemicals added. Weekly samples were collected in bottles containing sodium thiosulphate on the afternoon before overnight treatment, plated on R2A agar, and incubated at room temperature for 7 days. Results: Mean colony-forming units per millimeter (CFU/mL) in treatment units declined from 23,389 (± 20,085) at baseline, to 6 (± 10) in week 4, to 5 (± 2) in week 12. Statistical analysis showed a significant difference between treatment and control units. Conclusion: Intermittent treatment of dental unit waterlines with 0.12% chlorhexidine gluconate (CHX), in a proprietary formulation, resulted in significantly reduced bacterial counts to levels that were consistently below the American Dental Association’s goal of 200 CFU/mL for 8 weeks.

Full Text PDF File | Order Article

 

Get Adobe Reader
Adobe Acrobat Reader is required to view PDF files. This is a free program available from the Adobe web site.
Follow the download directions on the Adobe web site to get your copy of Adobe Acrobat Reader.
  © 2014 Quintessence Publishing Co Inc
 

Home | Subscription Services | Books | Journals | Multimedia | Events | Blog
Terms of Use | Privacy Policy | About Us | Contact Us | Advertising | Help | Sitemap | Catalog