alexa Can Oral Debris on Dental Instruments Harbor Organisms from Disinfection?
ISSN: 2332-0702

Journal of Oral Hygiene & Health
Open Access

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Case Report

Can Oral Debris on Dental Instruments Harbor Organisms from Disinfection?

Motamedi MHK1*, Navi F2, Valai N3, Ghaffari K4and Ardalan A5

1Trauma Research Center, Baqiyatallah University and Azad University of Medical Sciences, Iran

2Dental Faculty, Azad University of Medical Sciences, Iran

3Hemoglobinopathy Institute, Thalassemia Research Center, Mazandaran University of Medical Sciences, Iran

4Dental Student, Tehran, Iran

5Private Practice, Tehran, Iran

*Corresponding Author:
Mohammad Hosein Kalantar Motamedi
Professor, Trauma Research Center
Baqiyatallah University and Azad University of Medical Sciences
Dental branch, Tehran, P.O. Box: 1994943636, Iran
Tel: 00982122616946
E-mail: [email protected]

Received Date: November 07, 2015 Accepted Date: February 29, 2016 Published Date: March 07, 2016

Citation:Motamedi MHK (2016) Can Oral Debris on Dental Instruments Harbor Organisms from Disinfection?. J Oral Hyg Health 4:195. doi:10.4172/2332-0702.1000195

Copyright: © 2016 Motamedi MHK, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited



Background and Aim: Reusable dental instruments are continually contaminated with debris and body fluids, which require cleaning decontamination and sterilization prior to re-use. This study was aimed to assess if remaining blood and debris on instruments can prevent instruments from being fully disinfected and sterilized because of harboring microorganisms and impeding disinfectant penetration.
Materials and Methods: 42 unwashed contaminated instruments were collected in the case group, while 42 washed contaminated instruments formed the control group. Samples were collected in 2 separate sterile trays, and then submerged in 2% Hydrogen Peroxide (NanoSil) for 3 hours. Sterile swabs impregnated with Trypticase Soy Broth (TSB) were used for sampling. Specimens were transferred to mediums before incubating for 24 hours at 37°C. Samples with bacterial growth were transferred to blood agar, chocolate agar and McConkey agar to identify bacterial species.
Results: There was 100% absence of bacterial growth in control samples, while unwashed instruments showed 28.6% (12 samples) presence of growth.
Conclusion: This study indicates that remaining blood and debris on instruments may shelter microorganisms. Thus soaking contaminated instruments in disinfectant within the required time and washing them properly via a mechanical system before autoclaving, develops a discreet, secure sterilizing method with the highest success.


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